Evgeniy Sedov
When your hands grow from the right place, life is more fun :)
Content
To prevent cold air from entering the apartment from the street, you can find it on the open market. special device. This is a heater above the front door, which has electronic control, a remote control and several operating modes. The unit itself is silent and compact; its presence in the house is sometimes simply irreplaceable for all household members.
Thermal curtain - what is it?
Essentially, this is a cold air cut-off device for the entrance doors, which works on the principle of a heat fan. It protects the room from drafts, and its inhabitants from cold and illness. The installation can be vertical or horizontal, but the functions are identical - to ensure the flow of heat and prevent the penetration of cold air from the street. The thermal curtain operates from the mains, the operating voltage is 220 Volts. If on front door hang up such a unit, there will definitely not be any dissatisfied with such an innovation.
How does a thermal curtain work?
A progressive thermal curtain device is specially designed for climate control in a room of any size. Its installation is relevant for the front door, but the range of action is limited. To understand how this unit functions, you need to carefully familiarize yourself with its structural elements. This is a metal case, a fan, an air heater, and nozzles for the jet exit. Additionally, a sensor and other devices can be installed to quickly heat the air, control the air temperature in doorway.
Electrical
There are several types of curtains, which differ in their operating principle and installation method. In the first case, an electric heat curtain, which operates from a 220 V network, is especially relevant. For such models, not only vertical/horizontal installation is required, they can be installed on the side in door openings. The main heating element is an electric coil, and warm air is distributed using a classic fan. This is an excellent option for home use, since the thermal curtain has a discreet design and compact dimensions.
Mermen
Compared to the previous proposal, this a budget option, which has a number of advantages during use. Among these dimensions, low noise level during operation, overheating protection system, economical power consumption, affordable price. Scheme of work air-thermal curtains water is based on heating the main element, which is the heater. It is characterized by increased resistance to sudden temperature changes environment, has a long service life, high technical characteristics.
Types
The second classification of thermal curtains for the entrance door is carried out according to the method of installing the structure in the doorway. For a living space, this is very important so as not to spoil the interior and not clutter the space with unnecessary objects. By studying existing types of thermal curtains, it is possible to decide which option is optimal in a particular case.
Vertical
Such models are considered popular because they are discreetly fixed above the door or window opening along the entire width. Vertical thermal curtains provide a stable barrier, and a sufficient level of heat is maintained in the room for a long time. Wall mounting requires certain skills, so it is especially convenient and simple not horizontal, but floor installation. Such mobile designs are becoming more popular every year.
Electric horizontal
Knowing how the unit works, it is important to install it correctly in your apartment and use it for its intended purpose. A horizontal thermal curtain is attached to the sides of the entrance opening and is used when there are suspended ceilings or when there is no free space above the door. Such models are particularly bulky and are not suitable for apartments with small corridors. In this case, the thermal curtain on the front door will only get in the way and constantly catch your eye.
Built-in
When purchasing a thermal curtain for the front door, it is appropriate to install it behind a suspended ceiling or install it in the opening of doors and windows. Modern models are equipped additional functions to prevent condensation. Universal thermal curtains are considered a full-fledged heating element, suitable for home use and installations in office premises. Pick up suitable design You can go online or seek help from a consultant at a specialized store. Thermal curtains over the door are inexpensive, it is cheaper to order and buy in the online store.
Heat curtain performance
Taking into account density air flow and the size of the living space, you can choose the right thermal curtain for the front door. The power of the structure (in kW) determines. How much air is the unit capable of pumping per unit of time? You should not skimp on this indicator, otherwise the thermal curtain will create insufficient heat, and a draft will still penetrate into the room. The cost of the heat curtain and whether the buyer receives the desired effect depends on such a technical indicator as power.
How to choose a thermal curtain
Manufacturer
Choosing suitable ceiling curtains, Special attention It is advisable to pay attention to the manufacturer and its reputation in the market. This determines how long the heat curtain will last, whether it will perform its original functions, and with what energy consumption. Below are two models that potential buyers identify as rated. This:
- model name - Ballu BHC-6.000 SR;
- price – 6,300 rubles;
- product characteristics – power – 6 kW, remote control, electronic control, overheat protection;
- pros - compact thermal curtain for horizontal installation, discreetly complements the interior design;
- cons – acts on the principle of a fan.
The second, no less popular model of a thermal curtain for the front door is presented below:
- name – Dantex RZ-0306DMN;
- price – from 5,500 rubles;
- product characteristics – power – 3 kW, overheating protection, mechanical control, vertical installation;
- pros – inexpensive model with high technical characteristics;
- There are no cons.
Maximum heating power
This is another important one technical indicator, which is taken into account if you determine in advance the size of the room and the degree of its heating. Choice ceiling structure depends on the footage and the rate of heating of the air. Below are powerful models that correspond to a compromise solution to the “Price - Quality” parameters. These are products from the following manufacturers.
- model name – Falco AD105;
- price – 15,000 rubles;
- product characteristics – power – 4.5 kW, overheating protection, vertical or ceiling mounting;
- advantages – heats large areas, affordable cost;
- There are no cons.
Here is the second competitive thermal curtain for large areas on the front door:
- model name - Frico AD210E06;
- price – 63,000 rubles;
- product characteristics - power adjustment, operation from a 380/400 V network, wall, ceiling, suspended ceiling installation options;
- pluses - ventilation without heating, low noise level, presence of a fan;
- cons - maximum installation height - 2.5 m, high cost.
Curtain dimensions
It is advisable to install a compact model on the front door that will not spoil the interior of the room. At the same time, it is important to select high technical design characteristics that eliminate drafts and maintain sufficient heat in the rooms at a low noise level. Below are ceiling- and floor-type thermal curtains, which are especially in demand among the masses:
- model name - NeoClima NQH-1.2i;
- price – 2,000 rubles;
- product characteristics - infrared quartz heater, mechanical control, overheating protection, power - 1.2 kW, floor mounting option;
- pluses - shutdown when overheating, dimensions - 57x16x13.5 cm, low price;
- There are no cons.
Below is another thermal curtain for the front door from a domestic manufacturer:
- model name – CLASSIC KS-1003;
- price – 17,000 rubles;
- product characteristics - vertical installation, overheating shutdown, no thermostat;
- pluses - dimensions - 985x260x220, heating of large areas;
- cons – high price.
Heating element type
Models are available with and without an electric heat exchanger. In the first case, we are talking about heating elements, spirals, and ceramic heaters. In addition, it is possible that there is a micathermic heater that allows you to control energy consumption modes. This parameter is stated in technical characteristics ah, determines the functionality and speed of operation of a particular unit. This:
- model name - MINI - MINI-0;
- price – 4,000 rubles;
- product characteristics – dimensions – 800x175x125, heating element – heating element, installation at a level over 2 meters;
- advantages - minimal electricity consumption, heat savings even with the doors open;
- There are no cons.
The second thermal curtain for the front door is presented below; delivery in Moscow and the region is not difficult:
- name – Artos ZASLON 1500;
- price – 30,000 rubles;
- product characteristics - dimensions - 1610x535x450, voltage - 220 V;
- pros – covers large spaces, installed at a height of 6 m, minimal heat loss;
- disadvantages - high cost.
Control
According to this selection criterion, there are electronic and mechanical models, with and without a remote control. When choosing, it is important to take this criterion into account in order to ensure maximum comfortable conditions regular use of the thermal curtain. For the front door, the presence of a remote control is welcome, and it is better to choose an electronic design. Here are good options for home use:
- model name - Tropic K6 (Russia);
- price – 3,000 rubles;
- product characteristics – power – 6 kW, remote control, maximum installation height – 2 m, productivity – 300 m3/hour;
- pros - compact and powerful unit at an affordable price;
- There are no cons.
The second thermal curtain, quickly installed on the front door, is presented below:
- model name - Frico AD-215A;
- price – 55,000 rubles;
- product characteristics – horizontal mount, presence of a remote control, heating element - heating element, power - 6 kW;
- pros – powerful model for large areas;
- cons – high price.
Installation
Such progressive models are installed horizontally or vertically, depending on the design of the thermal curtain and the dimensions of the room itself. In this matter, it is advisable to use the help of a specialist, but do not understand that such services are also provided on a paid basis. Here are the heat curtains you can install in your own home:
- name – Ballu BHC-18.500TR;
- price – 24,000 rubles;
- product characteristics – vertical/horizontal mounting, device power – 9 - 18 kW, maximum height – up to 5 m, presence of remote control;
- pros - powerful design;
- disadvantages - high cost.
The second option for buyers to choose from for the front door:
- model name - Vectra RM-1209G-3D/Y-6;
- price – 5,300 rubles;
- product characteristics - vertical/horizontal mounting, power – 6 kW, maximum height – 2.5 m, presence of remote control;
- advantages - affordable price for home use, high quality, guarantee;
- There are no cons.
Noise level
It is necessary to choose silent models to avoid discomfort in your own home. This indicator is reflected in the technical documentation. Here are the heat curtains suitable for your home:
- name – Neoclima TZT-508;
- price – 8,200 rubles;
- product characteristics – power – 4.5 kW, mechanical control, horizontal installation;
- pros - low noise level - 46 dB, affordable price;
- There are no cons.
Here is the second thermal curtain, which is ideal for entrance doors of different sizes:
- model name - MINI - MINI-3;
- price – 4,500 rubles;
- product characteristics – power – 3 kW, horizontal installation, overheating protection, no heat supply adjustment;
- pluses - low noise level - 54 dB, compact dimensions, affordable price;
- There are no cons.
Types of installation
Thermal curtains can be installed on the wall or ceiling. This point is reflected in the technical documentation. The second installation option is irrelevant in the presence of suspended ceilings and plasterboard structures. A knowledgeable technician will advise you on the installation location and choice of fasteners. Here are some good options for your home:
- name - Neoclima TZT-308;
- price – 4,500 rubles;
- product characteristics – power – 3 kW, mechanical control, wall mounting, horizontal installation;
- pros – cheap model with high technical characteristics;
- There are no cons.
This is an important function that extends the service life of the thermal structure for the front door and protects it from breakage. The cost of curtains with this parameter will be much more expensive, but you don’t have to worry about climate control in your living space. It is worth paying attention to the following units:
- model name - Neoclima TZS-610;
- price – 6,000 rubles;
- product characteristics – power – 6 kW, wall mounting, horizontal installation, overheating shutdown;
- pros – affordable thermal design;
- cons - questionable customer reviews.
Second option for the front door:
- name – Ballu BHC-L06-S03;
- price – 3,700 rudders;
- product characteristics – power – up to 3 kW, fan, wall mounting, overheat shutdown;
- pros – budget option for home;
- cons – limited number of functions.
Rating of thermal curtains
Many buyers are interested in what is the best thermal curtain for the door, what is its cost. You can determine your favorite for the front door based on online reviews on thematic websites. It would not be superfluous to have an individual consultation with a specialist on installing thermal structures on the front door. Below are the top three sales leaders in terms of cost and quality parameters:
- Neoclima TZS-610.
- Timberk THC WS8 3M.
- Ballu BHC-L08-T03.
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It's good if your country house heated . Live fire creates comfort and a homely atmosphere, but this method is expensive and has the risk of accidental fires. If you do not live in your country house permanently, then the best solution would be not a massive boiler or stove, but a compact and inexpensive heater. Like option will do for heating a separate zone in which it is cool. You can choose it for your dacha. Which one is better, consumer reviews will suggest a high-quality option. It is also worth comparing the characteristics of individual types, prices and pros and cons.
To heat your dacha you need to choose inexpensive and efficient equipment
The heater can be selected according to the type of installation. In this case, it is worth considering floor, wall and even ceiling models. Heaters are also classified according to their operating principle and types of heating.
Table 1. What should be the power of the device depending on the area
When deciding, it is worth studying the opinions of consumers and various reviews. This approach will help you avoid making a mistake with your choice.
Helpful information! Do not forget that the power rating of the equipment depends on the volume of the room. For heating 20 cubic meters you will need approximately 1 kW of electricity. At the same time, take into account the existing heat loss through doors, windows and corner walls. In this case, you will need a product with more power.
Choosing an electric economical heater
When choosing the most economical heater for your home, you should consider electric models. This device has a simple design. It looks like a plate radiator with a flat body. Inside the structure there is a heating element - heating element. There are special holes in the panel through which air circulates. Warm air has less weight than cold air, so it rushes upward and, after cooling, sinks down.
Manufacturers offer convectors of different power, sizes and designs, so you can choose a model to suit every taste. Such products operate silently and provide complete heating of the room. It is enough to hang such a device on a special mount in the wall or simply place it on the floor and connect it to the network. In order for the heater to work effectively, the power must be correctly calculated. This indicator is calculated taking into account the fact that on 1 square meter 1 kilowatt required.
Similar designs are different modern mechanisms controls that allow:
- You can turn on up to 20 devices from one remote control device;
- set the optimal temperature;
- program the operation of the structure for a day, week or even month;
- use antifreeze mode.
New and improved models are expensive. They require durable and high-quality electrical wiring.
Helpful information! An electric convector can be installed only for one room; another device can be installed in another.
Is it worth choosing gas models?
Understand which gas heater Consumer reviews will help you better for your dacha. A distinctive feature of this design is the heating method. The operating principle of this design is as follows: gas passes from the gas source and penetrates the combustion chamber. Streams of cooled air move through the body, warm up from the combustion chamber, and then enter the room already warmed up. Smoke enters the street through the chimney.
Gas convectors can operate on mains and bottled gas. But with the balloon method, the costs will be higher and comparable to electric option.
Helpful information! When using gas cylinders, you must follow safety rules. You must always remember that they should not be left in the open sun.
What you need to know about infrared heaters?
When deciding which is better: a convector or an infrared heater, you need to study the characteristics of both options. Unlike similar options, an infrared device does not warm up the air, but objects, which then transfer heat to the air. Because of this property, they can be used not only in the house, but also in or on the terrace. Such a device should be placed surrounded by as many objects as possible that will be affected by heat.
If the room has cooled down, then this option will allow you to feel the warmth quite quickly, after two to three minutes after starting. The advantages of such structures include noiselessness and energy efficiency. In addition, when operating infrared equipment, oxygen is not burned.
Such models come in two types depending on the energy source. In one version, such a source is electricity, and in another liquefied gas. As dacha option Experts recommend choosing a heater powered by an electrical network.
Infrared devices cost one and a half times more than oil-based structures or convectors. But at the moment, these are the most budget-friendly and affordable heaters, thanks to significant energy savings. There are models on sale that are mounted on walls or ceilings, and also mounted on the floor.
Helpful information! It is believed that such units have a healing effect. They help warm up the muscles and stimulate normal blood flow in frozen extremities.
30 June 2015 
Alexei
The purpose of a thermal curtain is to prevent cold air flows from entering the room and retain heat. With the help of a curtain, the possibility of drafts is eliminated, even when the doors are open.
An air curtain should not be compared with a heat gun; its purpose is to heat the space: a thermal curtain on a door does not heat the air. Installing such protection saves heating costs by preventing heat leakage.
A little about thermal equipment
Let's look at all the pros and cons of thermal equipment:
- Saving heating costs;
- Keeps you cool in the summer season;
- Prevents drafts;
- Protects the room from dust, insects and dirt.
The disadvantages of the system include the high noise effect during operation - from 50 dB. The operating noise of the device can be compared to washing machine. Moreover, all models, regardless of the manufacturer, have a noise effect.
Structure and principle of operation
Air-thermal curtains are designed on the principle of fans that force air into a room, but at a higher rotation speed. This fan creates a dense air layer in the doorway, which prevents the mixing of air flows of different temperatures.
Kinds air curtains
- By type of installation;
- By type of coolant.
According to the type of installation, there are models with horizontal and vertical mounting, as well as hidden ones. Vertical curtains are installed at the top of the doorway along the entire width. Horizontal models are mounted on the side of the doors.
Hidden curtains are installed in doorways or on suspended ceilings. For specialized premises, products with additional functions are manufactured, for example, curtains with protection against water drops in car washes.
The coolant of these structures can be electric heating coils, heating elements and hot water from the heating system. Electrical devices are easy to install and maintain. Devices connected to water heating can be installed when building a house or during overhaul. The price of water curtains is significantly higher than their electric counterparts, however, they quickly pay for themselves during operation.
Watch the video, how it works:
The advantages of spiral heaters include instant heating, reduced noise effect and uniform distribution warm air by area air gap. Prices for thermal curtains for doors range from 8,000 rubles.
The disadvantage is the burning of oxygen in the room. Heating elements do not have contact with air, due to the placement of the heating element in thermal insulation material. The most preferred and economical are considered heating elements made of ceramics (their price starts from 11,100 rubles).
Model overview
Ballu BHC-18.500TR
This powerful thermal curtain for entrance doorways is used for installation in terminals, garages, warehouses, depots, etc. The price of the system is 31,100 rubles.
Vectra RM-1209G-3D/Y-6
This system is designed for installation on a door standard size. Ceramic heaters provide a comfortable indoor microclimate and do not burn oxygen. Vectra is equipped with a two-speed fan that creates a dense air layer.
Sliding blinds create additional comfort by allowing air flow to be directed in a specific direction. Using the infrared remote control, you can easily coordinate the operation of the system.
Tropic K6 (Russia)
These devices are used for installation in low-traffic areas, vestibules. The reliability of the design is ensured by a strong steel body and components from European manufacturers.
The metal case protects the device from overheating over a long period of operation, as well as from various kinds mechanical deformations. You can buy a thermal curtain for 6,835 rubles.
- Heating element: heating element;
- Power: 6 kW;
- Capacity: 1,200 - 2,100 m3/hour;
- Maximum height: 2.5 m;
- Mounting: horizontal;
- Control: remote control;
- Voltage: 220 V.
The Swedish company Frico produces a variety of climate control products of the highest quality. This design is designed to protect standard and small doorways from cold currents, insects, odors and dust. The device is easy to install and controlled by remote control.
Watch a video about Frico brand models:
High-tech steel structure protected from corrosion and mechanical deformation. There is an option to change the direction of air flow, protection from moisture and small particles. Distinctive feature Frico appliances are low energy consumption. Buying a thermal curtain over the door will cost 35,890 rubles.
How to make the right choice
Here are some criteria for choosing thermal equipment:
- Curtain length/width;
- Turbine design;
- Control type;
- Type of heating element;
- Additional options.
The correctly selected length of the air curtain determines the efficiency of the structure: it must cover at least 3/4 of the length of the opening.
When installing horizontally, the width of the door opening should be taken into account: the length of the blowing element should exceed the width of the door by 10 cm. If the doorway is very large, it is advisable to install several curtains, which will provide a good protective layer. Otherwise, installation of the system will not bring results.
The turbine design determines the speed of air flows generated by this device. For example, a regular 1/2.5 m door requires a curtain with a capacity of 900 m3/hour (5 kW). If the rate of flow formation is insufficient, the efficiency of the device will decrease significantly: loopholes will remain for cold penetration. In this case, a vestibule is installed in the house, which will partially retain cold flows from the street.
Watch the video, equipment selection criteria:
The type of heating element must be selected based on the conditions of the protected room. Coil heaters tend to burn oxygen, so they are not advisable in a home environment. Heating elements are more expensive, but the design provides protection of oxygen from burnout. The heating elements are located inside a metal tube, inner space which is filled with heat-conducting quartz sand. Heating by connecting to the heating network saves energy costs, however, such structures are difficult to install and are installed at industrial facilities.
Does the power of the heating element affect the efficiency of the thermal curtain? No, it doesn't. The performance of the device is determined by the rate of formation of air flows, and not by heating the air. If you have a vestibule, you can choose a device without a heating function or with minimal heating: this will save money. TO additional options includes a remote control and a timer. This creates additional ease of use.
Bottom line
When choosing the desired device, determine whether the dimensions of the doorway match the selected model. In case of discrepancy, give preference to horizontal devices. It is not recommended to save money when purchasing a protective curtain and purchase the cheapest device with an air pumping rate of 300 m3/hour: such devices are intended for stall windows.
Ensuring a comfortable stay in the premises of the house at any time of the year is one of the main concerns of the owners. But efforts to insulate walls and install an appropriate heating system may be in vain if heat escapes freely through windows or doors. This is especially true for those buildings in which, for one reason or another, they open very often or even remain open for a long time.
A simple situation: the owners of the house open some kind of family business - a workshop, a store or office space. On the one hand, numerous clients are great, but at the same time, frequent opening of doors can quickly cool down even a well-heated room, and this means serious energy costs. Another option is that the specific nature of the activity of a private workshop, equipped in a garage or in a special extension, requires constant or very frequent opening of the gate (). To ensure acceptable conditions for effective productive work in winter, you will have to spend exorbitant efforts and resources to maintain normal temperatures. But there is a way out - in both cases, a thermal curtain on the front door should help.
Why do you need a thermal curtain?
To make it easier to understand the purpose of a thermal curtain, you should first understand how cold air enters the house through open doors. This process is due to several reasons - the difference in temperatures outside and inside the room, and the different pressure levels caused by this difference. And plus a very important reason for this is the movement of air masses along the street - the wind, the vortex flows created by passing vehicles, etc.
Fragment “A” shows the movement of flows of cold and warmer air through a doorway in “quiet” conditions. Cold air always denser, and with its increased pressure it simply squeezes out the lighter, warmer one. At the same time, the cold flow is always located closer to the floor - everyone, in their everyday experience, has probably felt how the “cold pulls” down from under a door that is not tightly closed.
To this quite ordinary exchange a wind component is added (fragment “B”). It is, of course, a variable value, depending on the direction and speed of the wind, stability or periodic gusts, the size of the doorway and other parameters, but in general, most often such an application of the vector of movement of air masses is still present.
As a result, as a result of the addition of both factors, the picture shown in fragment “C” is obtained - the “channel” of cold air inflow increases even more in area, occupying most of the doorway. In such conditions, if the door has to be kept wide open or opened frequently, no amount of heat will be able to cope with heating the room. heating equipment, which will “thresh” idle. In addition, there are constant strong drafts moving through the rooms, sharply increasing the likelihood of colds, even if people are dressed “for the season.”
What if you apply a fairly narrow but dense directed air flow. So that its pressure exceeds even the theoretically possible values of external and internal pressures (fragment “D”). If the parameters of such a flow are correctly calculated, it will become an obstacle to the exchange shown above, fencing off the air masses outside and inside the room. Somewhat bending its configuration under the influence of external pressure on it, the flow still retains the necessary “collection” and is fragmented only upon reaching the floor surface, dividing into two directions. A certain part goes outside, but still a more significant part returns back into the room (fragment “E”).
How can this effect be used?
- Picture “a” is winter time. The air receives the necessary heating, and the resulting curtain not only does not let cold masses in and does not allow heated ones to escape outside, but also, returning to the room, “provides assistance” to the heating system.
- However, it would be a big mistake to consider the air curtain too “narrowly”, only as a kind of heating device. Picture “b” shows her work in the warm season. The situation is reversed - cool internal air does not go outside (although its density in the case under consideration is higher), and the street heat, heated by the summer heat, cannot penetrate into the room. Thus, the rooms are maintained at a comfortable temperature for people to stay.
- But that's not all. Regardless of the time of year and operating mode, such a curtain performs another important function (picture “c”). There is always a lot of dust suspended in the street air, especially if there is a busy highway or even a railway line in the immediate vicinity. For the same reason, the air can be refilled with exhaust gases. Naturally, if all these “bonuses” get into the premises, the local microclimate will suffer significantly. But a thermal curtain can completely cope with this problem. This also applies to falling snow, light drizzle, and in summer time- hordes of small annoying insects.
- And one more application. With the help of such air curtains, it becomes possible to zone rooms according to the type of microclimate created in them. For example, you can “fence off” a spacious hall at the entrance (where elevated temperature air is not particularly needed, and an unreasonably large amount of energy will be spent on heating such a room) from internal living or working spaces, even without installing additional doors.
So, creating an air curtain helps to cope with a large number of problems. And all this can be achieved by installing a special device.
Despite the fact that the air curtain itself is a consumer of electricity, its use provides considerable benefits. Thus, practice shows that a correctly selected and installed device allows you to save up to 30% on energy spent on heating premises in winter and air conditioning in summer. And if the owner thinks more broadly, he will not be able to help but notice that the absence of cold drafts will sharply reduce the cost of medicine for household members or the payment of sick leaves for the staff working for him.
Another important advantage is that with such a rich range of possibilities, the device itself practically does not take up any useful space in the room.
For clarity, here is a small animated video on the principle of operation of thermal curtains:
Video: how a thermal air curtain works
How does an air curtain work?
As a rule, an air thermal curtain is attached electrical device, assembled in a body with a pronounced elongated shape.
In the upper part of the housing there is a grille (item 1), through which air is taken from the room.
At the bottom there is an exit slit-like window (nozzle) (item 2), which can be equipped with movable curtains like blinds.
Control elements (item 3) can be located on the body itself, in a place accessible for visual control and manipulation. The control panel, in addition, can be remote and located on the wall of the room in a convenient place.
The case may have a terminal block for connecting to the power supply, but on household-class models most often there is a pre-connected cable with a plug for connecting to the outlet (item 4).
On many modern models In addition, remote control is also provided using an infrared remote control (the same as in split system air conditioners).
The main task of a thermal curtain is to create a powerful air flow. This means that the main component of the device is the blower fan. Typically, these devices are not the usual blade type, but a turbine type, of two varieties - a more compact radial type (position “a”) or an elongated tangential type (position “b”).
Pos. “c” is a heat exchanger where the air flow, if necessary, receives the required heat. The vast majority of models have an electric heat exchanger, where the air is heated from coils or heating elements. However, there are stationary models of thermal curtains that are connected to existing water heating circuits.
Many modern thermal curtains have built-in filters, which simultaneously clean the air driven through the device from suspended dust.
The electronic circuits of modern curtains provide multi-level protection against short circuits, breakdowns to the housing, overheating, and have thermostatic control modules for the heat exchanger heating level and fan rotation speed.
Classification of thermal air curtains
There are several gradations of classification of thermal curtains.
By location relative to the doorway:
- Classic design, most thermal air curtains are devices with horizontal installation above the doorway (gate, window, etc.)
- Sometimes, due to certain technological or aesthetic reasons, installing a thermal curtain from above may be impossible or irrational. For such situations, vertical devices are provided, which are installed in “columns” on one or even both sides of the doorway.
Many models in this regard have increased versatility - their design allows, taking into account the specifics of the room, to be installed in both horizontal and vertical positions.
By installation type:
Most models have a metal case, the design of which involves mounting the device on a wall. However, if any increased requirements are imposed on the interior design of the room in terms of design, then you can select a thermal air curtain that is built into the ceiling or wall along the height of the opening.
By the presence and type of heat exchanger:
All air curtains according to this criterion can be divided into three groups:
- Curtains with electric heat exchanger. Usually in the classification they are marked with serial designations R.S., R.M. or RT.
Advantages - maximum simplicity of design and installation of the device, high efficiency indicators, the ability to smoothly adjust the heating temperature of the air flow.
Conventional spirals were used as heating elements on older models, but now this approach has been abandoned almost everywhere, since open heaters “burn through” oxygen and quickly dry out the air in the room. Currently, tubular heaters are used, similar to the familiar heating elements, or more modern semiconductor PTC (Positive Temperature Coefficient), which have the ability to self-regulate heating and electricity consumption.
The disadvantages of electric heat exchangers are significant power consumption (not counting the costs of ensuring the operation of the fan), and some “inertia” at startup - the heat exchanger requires a certain time to reach operating mode.
- Thermal curtains with a water heat exchanger (series RW).
In such models, electricity is consumed only to ensure the operation of the fan and control group. This, of course, makes water thermal curtains much more economical during continuous operation.
The housing (outside or hidden) contains pipes for connecting the device to the existing circuit of the water heating system (shown by arrows in the figure).
Pipes for connecting the supply and return of the home heating system The disadvantages of this type of thermal curtains are obvious - there are a lot of difficulties during the installation process. It is necessary to provide for branches from general outline, and provided that the aesthetics of the interior are preserved, such an operation can be quite problematic. The heat exchanger of such a curtain has a small tubular structure (similar to a radiator in a car), which will quickly clog if a filter device is not provided. In addition, the consumed thermal power of such an installation must correspond real possibilities autonomous system heating so that connecting the air curtain does not affect the heating level of radiators in other rooms.
- Air curtains not equipped with a heat exchanger (serial designation – RV).
Such devices are used in conditions where additional air heating is not required. They protect well from the entry of street dust, gas pollution, insects, and from the leakage of conditioned air outside. Find wide application V production practice– for zoning spacious rooms, protecting against warm air entering freezers or storage, etc.
By power level (performance) and, accordingly, purpose:
- To the series R.S. include mini-curtains with a limited scope of application. Their performance is sufficient to effectively “curtain” only small openings, for example, visitor reception windows facing a cold hall, or customer service windows in street kiosks, transport ticket offices, etc. Usually they are designed for openings no more than one and a half meters high and up to 800 mm wide.
The air flow rate and pumping volume per minute are low. In domestic terms, similar thermal curtains practical application don't get it.
- Thermal curtains series RM- This is the largest group of devices that are designed for installation in most existing standard doorways, with a height of approximately 2.5 to 3.5 meters. Including, they are suitable for or for the transition from a cold hallway to the residential sector of the house.
Mid-class thermal curtain - quite suitable for an entrance door Such devices are the most popular. It is these series that are most often equipped with convenient remote blocks or remote controls management.
- Powerful thermal curtains series RT are used to protect high openings, from 3.5 to 7 meters. This could be the gate of a car repair shop, warehouse or production premises, entrances to large shopping centers or cultural and social buildings.
Very often, powerful installations of the series are included in this category RW connected to central heating or hot water systems public buildings and industrial buildings. the cost of water thermal curtains is significantly higher than that of electric models comparable in performance and size.
There are also heavy-duty thermal curtains that can create an air barrier in openings and passages up to 12 meters high.
Prices for popular models of thermal curtains for the front door
How to choose the optimal thermal curtain
The choice of a thermal air curtain has its own characteristics, which you should definitely familiarize yourself with before going to the store.
In addition to the selection criteria already mentioned - according to the installation location (horizontally or vertically) and the operating principle of the heat exchanger, be sure to pay attention to the following characteristics:
- The dimensions (mostly the length) of the device itself, that is, the width of the air curtain it creates.
- Performance, that is, the ability to pump a certain amount of air per unit of time.
- Power of the heat exchange unit.
- Equipped with useful adjustment options.
- The degree of protection, that is, the level of safety of operation of the device.
- For the interior design of the room it is also important appearance thermal curtain.
Heat curtain dimensions
The determining parameter, of course, is the length of the device. It must provide the required air flow across the entire width of the doorway, without allowing free gaps for the penetration of cold or dusty masses from the outside. As a rule, the length of such devices lies in the range of 600 ÷ 2000 mm.
For standard doorways, curtains with a length of about 800 mm are usually purchased. With a competent approach, it should be taken into account that the width of the air flow should be at least equal to the clearance of the doors, but it is even better if it is slightly larger.
There is one more nuance. The production technology of air superchargers somewhat limits the length of the turbine (up to 800 mm), since when such dimensions are exceeded, vibration phenomena sharply increase, which requires a rather expensive “suspension”.
The turbine length is usually limited to 800 mm Trying to minimize costs when producing “long” models, many manufacturers follow the path of simplification: they place the electric drive in the center of the device, and the turbines on the left and right, achieving the required length. Such an arrangement may have a serious drawback - a “dip” or area may form in the center of the created air flow. low blood pressure, which can become a loophole for outside air to enter.
If the width of the doorway is greater than the length of the model you like or commercially available devices in general, it makes sense to purchase two curtains (and sometimes more) and install them close to one another.
Heat curtain performance indicators
It is quite clear that the thermal curtain must create an air flow, the “density” of which, that is, the internal air pressure would exceed the external one at any point in the doorway, from the installation site to the floor (the opposite side of the doors).
Calculations have determined that such required parameters are maintained when the speed of the air layer at the point of meeting the obstacle is at least 2.5 m/s. Naturally, due to air resistance, the speed decreases as you move away from the device.
The speed and density of the air flow depend on the working diameter of the turbine, its rotation speed and, therefore, on the overall performance of the injection unit. For example, the table below clearly shows the dependence of the effective range of the thermal curtain depending on the diameter of the turbine - in some cases you can focus on the following indicators:
| Distance from the thermal curtain outlet nozzle | Air flow speed depending on the fan installed in the thermal curtain | ||||
|---|---|---|---|---|---|
| Fan working diameter | |||||
| Ø 100 mm | Ø 110 mm | Ø 120 mm | Ø 130 mm | Ø 180 mm | |
| 0 m | 9 m/s | 10 m/s | 12 m/s | 14 m/s | - |
| 1m | 7 m/s | 7 m/s | 11 m/s | 10 m/s | - |
| 2 m | 4 m/s | 4m/s | 8 m/s | 7.5 m/s | - |
| 3m | 1.0 ÷ 2 m/s | 1.5 ÷ 2 m/s | 5 m/s | 6 m/s | - |
| 4 m | - | - | 2 ÷ 3 m/s | 5 m/s | - |
| 5 m | - | - | - | 3 m/s | - |
| 6 m | - | - | - | 1.0 ÷ 2 m/s | - |
| 0 m | 8.5 m/s | 8.5 m/s | 12 m/s | 12 m/s | 15 m/s |
| 1m | 6.5 m/s | 6.5 m/s | 10 m/s | 9.5 m/s | 13 m/s |
| 2 m | 3 m/s | 3 m/s | 7 m/s | 9 m/s | 11 m/s |
| 3m | 1.0 ÷ 2.0 m/s | 2 m/s | 4 m/s | 5.5 m/s | 9 m/s |
| 4 m | - | - | 1.0 – 2.0 m/s | 4 m/s | 7 m/s |
| 5 m | - | - | - | 3 m/s | 5 m/s |
| 6 m | - | - | - | 1.0 ÷ 2.0 m/s | 3 m/s |
| 7 m | - | - | - | - | 2 m/s |
| 8 m | - | - | - | - | 1.0 – 2.0 m/s |
Most often, in the technical documentation for a product, the manufacturer directly indicates what maximum dimensions a specific model has been developed for the opening. The system capacity must also be indicated there, usually in cubic meters per hour. It is believed that pumping 700 ÷ 900 m³/h is considered optimal for a standard doorway with dimensions of 0.8÷1.0 × 2.0÷2.2 m. However, if you look at equipment catalogs, you often find curtains with much more modest values. There is no unanimity of views among manufacturers on this issue.
There are special algorithms for calculating the parameters of thermal curtains, which take into account not only the linear indicators of the installation site, but also the location of the entrances to the building, average temperature differences for a particular region, the prevailing wind direction, etc. Such calculations are the domain of specialists, and if the characteristics declared by the manufacturer are not enough for someone to select a model, then they can contact the appropriate design organization.
Why is the issue of productivity so pressing? The efficiency of the air curtain directly depends on it.
- Fragment No. 3 schematically shows the operation of a correctly selected thermal curtain model. The air flow retains its “density” to meet the obstacle, and then approximately ¾ is reflected back into the room.
- Fragment No. 2 – a thermal curtain with excess capacity was installed. The speed at the floor surface is too high, and the flow is broken up in such a way that a significant part of it is carried out. Of course, this leads to completely unjustified losses of expended energy.
- And fragment No. 3 shows what will happen if the capacity of the created flow is not enough. The external pressure of the air masses outweighs, and a wide “window” opens at the bottom of the doorway for cold street air. The point of installing such a thermal curtain is generally very questionable - it simply does not play any significant role.
Thermal power of the air curtain
Oddly enough, this indicator for a thermal curtain is not decisive - this is their fundamental difference from seemingly related devices - heat guns or floor-mounted or built-in heating convectors installed near doors and windows.
The operation of the air curtain heat exchanger is not aimed at maintaining optimal temperature indoors, but only to partially compensate for heat losses through the door. It's clear. that part of the heated air, when operating in “winter” mode, is returned back to the room, but this circulation should only have an auxiliary effect on the heating system operating in the building, but not replace it in any way.
At high air pumping speeds, give it too much high temperature– the task is complex and very energy-consuming. Typically, in most models, the temperature increase is limited to 20 degrees at best, and on thermostatic control elements the maximum value, as a rule, does not exceed 30 ° C - more is not required from the thermal curtain.
But it’s worth paying attention to the total power consumption. The parameters of a dedicated power supply line, a circuit breaker in the distribution board at home, an RCD, etc. will depend on this indicator.
Control and protection systems
All electric heat curtains are equipped with two control levels: one is responsible for creating and maintaining a given air performance, and the second is for the operation of the heat exchange unit. At the same time, the protection system will never allow the heater to turn on when the turbine is not working, which protects the device from overheating.
The simplest, inexpensive models have preset levels of performance and heating of heating elements, which cannot be changed (the only exception is that you can completely turn off the heating when operating in “summer” mode. However, such cheapness and simplified design are hardly justified for use in a private home - everyone wants be able to optimally adjust the indoor microclimate.
More complex models equipped with stepwise adjustment, for example, they have 2 ÷ 3 turbine power levels and the same number of heat exchanger heating gradations.
However, in Lately However, the most popular are thermal curtains with electronically controlled, which opens up the possibility for owners to make smooth, precise adjustments.
The presence of a thermostatic sensor will allow you to significantly save on energy consumption - the automation will turn on or off the block of heating elements only as needed.
Thermal curtains can be equipped with remote control units, which are located on the wall. Models that have remote controls are convenient to use.
Like all modern electrical appliances, the thermal curtain must be equipped with several degrees of protection against short circuits, overheating, phase breakdown on the housing, voltage drops, etc.
Constructors and designers of manufacturing companies try to make thermal curtains externally so that they do not spoil the interior of the room with their appearance. Some models can even become a kind of decoration for the entrance group.
Installation of a thermal curtain
Self-installation of thermal air curtains, although not encouraged by manufacturers, is still quite possible, especially when it comes to the most common ones - completely electric models. In terms of complexity it is much easier to install household air conditioner.
Is it possible to install an air conditioner yourself?
Installing an air conditioner usually requires special skills, since when installing a split system you will need to correctly charge it with refrigerant. How it is produced is in a special publication on our portal.
The main thing is to provide a power line of the required power, the necessary safety and protective devices (automatic and RCD), and the connection point for the device.
The heat curtain kit usually includes brackets (or mounting panel), fasteners for hanging it above the doorway. The entire installation will mainly consist of careful marking, securing the mounting parts to the wall plane and then hanging the device itself. It can be quite massive, so you should exercise reasonable caution, or even better, enlist a helper.
After installing the device, if it is equipped with adjustable blinds, they should be positioned at an angle of approximately 30° from the vertical towards the entrance. On many models, such a flow slope is provided for by the design of the air nozzle itself.
It may be necessary to lay a signal cable and mount the remote control unit on the wall. All these nuances are always described in detail in the installation manual for a specific model, and you should familiarize yourself with them in advance, even when choosing a curtain, in order to really assess your capabilities.
Installing a curtain with a water heat exchanger is a much more complex undertaking, often requiring special thermal calculations and the installation of additional collector or pumping equipment. It’s not worth taking on such activities without experience.
Find out, and also get professional advice, from our new article.
Video: several recommendations for choosing a thermal curtain for the front door
The electric thermal curtain serves as a kind of protective barrier between the outside air and the microclimate of the room. Buy equipment of this type on favorable terms you can in the company First Passage. We guarantee the high quality of the products presented and offer an individual approach to each client.
Principle of operation
The design of the device provides for the presence of a fan, thanks to which the direction of the air flow is set towards the doorway. Due to kinetic energy, an insurmountable barrier is formed that prevents the penetration of air from the street or rooms with a different microclimate and pressure.
In this case, the flow of air masses should be set so that about 30% goes outside. This “ejection” will prevent cold drafts from occurring on the floor surface.
To select the appropriate technique, you should be guided by certain criteria.
Power. In addition to protecting the room from cold, a thermal curtain can provide air heating. But if the installation of this equipment is planned on the territory of a well-heated facility, then this function is not mandatory. In this case, you can opt for a more modest model with low power.
Length. The most popular are curtains whose length is in the range of 700-1000 mm. They are suitable for installation above doors with standard openings. The optimal length is one that corresponds to the width of the opening or slightly exceeds it. Thus, the installation will be able to effectively cope with basic tasks, protecting the room from the passage of cold air. If the opening is too wide, you will need to place several thermal curtains.
Performance. This parameter determines the speed of air mass flow.
Control method. All electric heat curtains, the prices of which depend on the technical characteristics, have two switches: the first is responsible for turning on the fan, and the second activates the heating elements. Sometimes there are models equipped with two-speed fans. It is also worth noting that such installations are equipped with two- and three-stage regulators, which allow you to vary the heating power. The mechanism is controlled via a built-in or wired remote control.
If you have any difficulties during the selection process optimal option, you can always count on the competent assistance of our consultants. They will guide you through the prices of thermal electric curtains over the door and answer all your questions. Call us and we will do everything possible to make your purchase as successful as possible.
