A water thermal curtain is one of the types of climate control equipment designed to maintain a certain temperature in a room by preventing the leakage of warm air to the outside and cutting off cold outside air. This is a kind of thermal barrier that separates the room and the outside space with a flat stream of air, which is supplied under pressure.
Equipment that creates a thermal barrier is intended for installation in the plane of a door or gateway in places with a large flow of people: in industrial workshops, public and residential buildings, shopping centers, warehouses, restaurants.
The operating principle is quite simple: radial fan directs an air flow to the opening - a kind of barrier through which warm air cannot leave the room, and cold air cannot penetrate inside.
The fan turbine is located along the entire device - this ensures efficiency and a uniform supply of hot air that is pumped through the body. The air movement pattern is as follows: cold air It is picked up from the floor, blown through the heating circuit and released as a hot stream parallel to the plane of the door or gate.
The engine is attached to the side. If the length of the turbine exceeds 0.8 m, then the engine is located in the central part, and additional small turbines are installed on the sides.
The cut-off curtain heats up as air passes through the water heater. The water curtain requires central heating or a hot water supply to operate.
The fully assembled design looks like this:
The water thermal curtain can be presented in various models, intended for use in buildings with certain conditions. Equipment is classified according to different characteristics, including:
The water curtains are controlled by two switches, which can be mechanical or electrified.
The fan - which can be two-speed - and the heating elements are switched separately. The control system can be equipped with additional 2 (3)-stage heating power regulators. If the fan is two-speed, then its speed is also regulated by the remote control.
If a thermostat is installed, it may occur automatic shutdown equipment when the set temperature value is reached.
The control panel, depending on the model, has the following varieties:
In warehouses and hangars, limit switches are used, which bring the system into operation only if the door or gate is open.
Water thermal curtains have such design features that give them a number of advantages over electric heating devices:
The water curtain creates additional convenience at car service stations, car washes, checkpoints and points Catering, because thanks to her Entrance door can always remain open. In addition, it not only creates insulating protection, but also serves as a heater for the warehouse vestibule.
The scope of its application depends on the functionality of the equipment: from air screening of warehouses and hangars to preserving the interior of an office or shopping center from street dust.
Water curtains are needed, first of all, for air isolation of the interior of the room from the outside air. Productivity, that is, efficiency, is what it is main characteristic equipment.
There are other important criteria that you need to pay attention to when choosing a particular model:
On Russian market The most famous companies are:
As an example, we can take a closer look at the thermal power of serial models Russian manufacturer- Teplomash company:
Heavy-duty designs - water thermal curtain series 700 for openings up to 12 meters high. Usually made to order for special equipment (hangars for airplanes and helicopters).
Installation of models of these series can be either vertical or horizontal – on the side of the door or gate. If necessary, it can be installed on both sides of the opening.
In all designs, the shell provides a degree of protection - IP-21 (from vertical drops and large particles). If the room is dominated by high humidity, then upon request the degree of protection IP-54 can be provided (for some models).
Installation of a water heat curtain is labor-intensive and requires the involvement of a specialized company - this will provide warranty service and subsequent services.
The costs required to install the equipment are fully recouped during operation due to the high power, efficient work and low maintenance overhead.
There are 3 ways to position the system:
The height of vertical water thermal curtains must be at least ¾ of the height of the heated opening.
Horizontal curtains must cover the entire width of the opening. Failure to comply with this rule will result in a failure in the air barrier.
To mount the system, only standard brackets recommended by the manufacturer may be used. The distance from the surface (for horizontal installation - from the ceiling, for vertical installation - from the wall) must be at least 0.3 m. Otherwise, air intake from the equipment will be difficult, which will lead to a decrease in productivity.
TO central heating or a hot water supply system, the equipment is connected using quick-release parts. If necessary, due to the type of insulated room, install a pump that increases air circulation to enhance heat transfer.
By generating an insulating air barrier, water curtains create a special indoor microclimate for various purposes: from offices to warehouses and hangars. Such structures require energy costs, but overall energy consumption is reduced by protecting the building from freezing. Water thermal curtains can be considered an optimized energy source, working by circulating hot water in common system heating.
Thermal water curtains belong to the class climate control technology. With their help, a stable directional flow of hot air is created.
The direction of the heated air stream can be vertical or horizontal (parallel or perpendicular to the floor).
The main source of thermal energy is hot water. The thermal curtain with a water heat source can be connected to centralized system hot water supply or water heating of the building.
Units of this type are economically profitable to install in rooms where there is not enough electrical power.
The thermal curtain must correspond to the characteristics of the object on which it is going to be used.
The main selection criteria are:
For example, to install on a doorway measuring 2x1 meters, you need to use a curtain, throughput which equals 800-900 cubic meters. m/hour.
If a unit of lower capacity is installed in such an opening, then only its upper zone will be heated. And through the lower part of the opening, cold air will enter the room;
Large openings require high speeds. It is often necessary to install several curtains in large openings;
By power curtains are divided into:
They are installed above window openings in order to reduce heat loss and protect against drafts. In small rooms, household curtains serve as an additional source of heating;
Their task is to reduce heat loss during open doors and protect people indoors from drafts;
A thermal curtain can also be used at home, but there are other solutions. Interesting option, helping to solve the problem of drafts and temperature changes is a warm floor. Read a detailed article about the device, and much more, to learn about all the advantages and disadvantages of such a solution.
When extracting water from a well, a pumping station is required to maintain constant pressure in the system. Everything about these devices, including pumping station Marina read, the most useful and relevant information.
According to the type of opening protection, curtains are divided into:
Mixing thermal curtains work in the following way: in the area of their action, cold air coming from the street and warm air coming from the installation are mixed.
The jet pressure of such devices is small, but it is required high power heating elements.
Shuttering installations are characterized by high air flow pressure, due to which outside air does not enter the room.
Majority modern models thermal curtains can operate in both mixing and damping modes.
According to the installation method, curtains are divided into:
The thermal curtain with a water heat source consists of:
Modern air heaters are constructed from copper pipe with aluminum plate ribs assembled on it.
The air heater cannot be disassembled. The coolant (hot water) enters and is removed from it through pipes located in the side of the structure.
Air flow is provided by axial fans. Fan motors have several speeds.
Adjustment and control of the curtains is carried out either using a remote or remote control controls (depending on the brand and model of the device).
Air is taken in through perforated panels of the housing, and exhausted through a slot-shaped nozzle located in the lower part of the unit.
In the engine compartment of any brand of air curtain there is a grounding bolt, which is connected to the terminal block through an internal communication.
To ensure normal operation of the air curtain, a water filter must be installed at the coolant inlet.
Many models are equipped mixing unit, which serves to regulate the coolant flow (and, consequently, the air temperature at the outlet of the curtain).
The operating principle of a water heat curtain is no different from the operation of devices using other types of coolants:
The fan takes air from the room, drives it through the air heater and directs it down with a powerful jet (in case horizontal installation) or sideways (when installed vertically).
Before proceeding with the installation of water heat curtains, a diagram of connecting the installation and lines to the coolant source is drawn up ( central system hot water supply or boiler equipment).
The most simple circuit consists of the following elements:
For the thermal water curtain to operate, it is necessary constant temperature coolant. In a large room, a capacity of tens of liters per minute may be a good solution. Read all about these devices in our article.
And another one interesting article, which describes water heating pumps, their characteristics, prices, and so on, is located, make the right choice!
After the diagram has been drawn up, installation begins.
The brackets on which the curtain is installed are attached evenly across the entire width of the opening, taking into account that the distance from the edge of the curtain to the ceiling must be at least 30 cm (if the curtain is mounted vertically, then this distance must be maintained between it and the wall).
The brackets are secured with anchor bolts.
The thermal curtain is attached to the brackets using standard bolts.
Since the ends of the connecting pipes are at the same level, an extension cord (up to 5 cm) is installed on one of them for convenience.
A quick-release connection is packed onto the extension cord (designed for quick installation and dismantling of the air curtain).
Through shut-off valves we connect the curtain to the coolant supply and return lines.
After checking the joints for leaks using pressure gauges, the installation can be started.
When planning the heating of any room, it is necessary to take into account the dew point value. What is it and why is it so important? Read our article!
For long-term operation of a water heat curtain, sufficient pure water. To solve this problem, you can purchase a main filter. Which filters are better? Read about it, it's interesting!
There are several most famous manufacturers water thermal curtains.
The leading position in the domestic production of water curtains is held by NPO Teplomash. The company produces units with power from 2 to 230 kW.
Models designed to protect small openings cost:
The cost of Teplomash products, designed to protect openings with a height of 3 to 5 meters, ranges from 24 to 38 thousand rubles.
Super-powerful curtains with a jet length of 15 meters cost about 80 thousand rubles.
This is another Russian company that successfully competes with other manufacturers of thermal water curtains. The cost of products of this brand is practically no different from the prices of Teplomash.
In addition to excellent quality, Swedish-made water heat curtains also have an excellent design.
But their cost is noticeably different from the cost of Russian-made devices. Thus, a small curtain with a capacity of 800 cubic meters. m/hour will cost the buyer 2000 euros.
Ballu brand water curtains are designed for openings of various heights - from 2.5 to 4.5 meters. All devices of this brand are universal: they can be mounted both vertically and horizontally.
Approximate cost of Ballu brand curtains:
Interior curtains designed to protect entrances to offices and other premises with high requirements To appearance, cost much more - from 180 thousand rubles.
Water thermal curtains from well-known global and domestic brands with delivery and installation within 2 days, with a 7% discount from the official equipment supplier.
A unique development in the field of heat conservation with minimal energy consumption.
Water curtain main nodes, which is metal case, heat exchanger, fan and fan motor are designed and installed mostly where electric curtain does not suit its characteristics.
Due to heating the air by extracting heat from the water, a water thermal curtain has a much greater heat transfer, which makes it possible to install a more powerful fan in this equipment. Thus, a water air curtain can significantly heat the air flow and at the same time cover much larger openings and entrance gates. Thermal curtains from heating are controlled through a 2- or 3-way control valve, which opens or closes with an electric drive.
Water thermal air curtains are equipped with a control board, which sends a signal to open or close the control valve. At open position From the tap, water as a coolant enters the heat exchanger, which is blown by a powerful stream of air. In this way, at the exit from the thermal curtain, we have a powerful warm stream of air, which, if calculated correctly, fully performs all the functions of air protection.
It is very important to choose and buy correctly water curtain to get exactly the results you expect from this equipment.
When purchasing water thermal curtains, remember that the price is not the most important factor. The main thing is to take into account the same important characteristics, which significantly affect the efficiency of the curtain.
We have the right selection water thermal curtain You can buy it absolutely inexpensively and at the same time it will serve you for a long time and with high quality.
Thermal curtain protects the microclimate of a heated warehouse from cold environment, generating an air barrier in front of the storage facility. Of course, such a system requires constant energy replenishment, but the overall energy consumption of a warehouse equipped with a thermal curtain only decreases. After all, the air barrier prevents the room from getting cold, reducing the cost of heating the storage.
In addition, there are ways to reduce the energy consumption of the thermal barrier itself by optimizing the way the air is heated. AND good example A similar optimized scheme is a water thermal curtain that heats the air barrier using the energy of the coolant circulating in the warehouse heating system.
That is why the scope of application of water curtains can be the widest, extending from thermal shielding of the vestibules of large warehouse openings to protecting the interior of a store or cafe from dust and insects.
A water-heated thermal curtain operates on the principle of an air convector. That is, powerful fans blow a stream of cold air - taken in at floor level - through the heating circuit (outlet from the heating system). As a result, a dense stream of hot air is generated, directed parallel to the plane of the protected opening.
Moreover, the air flow of the curtain is formed by a special turbine - a radial fan that pumps air through the cochlea body. Therefore, water curtains are mounted either horizontally (in the lintel area) or vertically (on the side of the opening, occupying ¾ of its height).
The curtain control unit can be either mechanical or electrified. Last option suggests the possibility of automating the curtain control process. However, regardless of whether the water heat curtain is controlled by mechanics or electronics, this unit must regulate both the turbine speed and the heat transfer of the heating circuit.
The air curtain is started by command from a remote or stationary remote control or limit switch. That is, in the first case, the thermal curtain operates constantly or during unloading and unloading of goods. In the second case, the start signal is the fact that the doors to the warehouse are opened. Accordingly, after the opening is closed, the curtain turns off.
In the process of selecting thermal curtains, as a rule, the following criteria are used:
In addition, the dimensions of the opening itself - the height of the lintel and the distance from the edge to the wall, which will determine the type of curtain (horizontal or vertical) - can also have some influence in favor of choosing one or another model.
Moreover, the dimensions of the turbine must correspond to either the width (for horizontal curtains) or the height (for vertical devices) opening. Although usually the dimensions of the curtain fit within size range 0.6-2 meters, but if the opening is wider or higher, then devices with a longer body are selected.
The power of the curtain is determined by the volume of the protected room. Moreover, if for every 25-30 cubic meters the volume of the room will have to be at least 1 kW of thermal power, then the curtain can also be used as heating device, warming the vestibule.
The performance of the curtain is determined by the area of the protected opening. Moreover, the main performance criterion is the air flow speed. At the end (at the floor) it should be at least 2 m/sec. It is this criterion that determines the power (performance) of the turbine, measured by the volume of air flow pumped in one hour. And for one square meter the opening area accounts for at least 350 m3/hour of turbine productivity.
In short, choosing a veil is a very complex procedure. Therefore, in the absence of engineering calculation practice, curtains are selected according to manufacturers’ recommendations, focusing on standard models.
Industrial-type curtains are produced by only a few manufacturers of heating equipment. Moreover, the most notable participants in the industrial thermal curtains market are the companies Ballu, Teplomash, Frico, Tropic. Therefore, below in the text we will consider popular models of water-type thermal curtains from only these brands.
The Russian company Ballu offers about a dozen models of water-type thermal curtains. Moreover, the cost of industrial versions of curtains mounted in an opening up to 4.5 meters high ranges from 20-35 thousand rubles (horizontal curtains) or 180-220 thousand rubles (vertical curtains).
Promising horizontal water curtains from this company include the following options:
Popular vertical water curtains from the Ballu brand include the following options:
Model Ballu Stella BHC-D25-W45 is a device with a heat output of 45 kW and a capacity of up to 5000 m3/hour. Such curtains cover a 3.5-meter opening. Moreover, they can be mounted on both the left and right sides. And the length of the BHC-D25-W45 case is 2.5 meters! The cost of this model reaches 250 thousand rubles.
Model Ballu StellaBHC-D20-W35 is a device with a heat output of 35 kW and a capacity of up to 4700 m3/hour. The height of such a curtain is 2.2 meters, and the cost is 218-220 thousand rubles.
The Swedish company Frico produces both high-performance industrial air curtains and devices for servicing commercial real estate and retail sites. Moreover, in the first segment, the following types of industrial curtains can be distinguished from the Swedish brand’s assortment:
In short, the Frico brand has quite interesting solutions, demonstrating enviable energy efficiency and versatility of the installation process. But Swedish curtains are not cheap - the cost of industrial models reaches 1.5 million rubles.
Thermal curtains of the Russian company Teplomash can be distinguished both due to their performance and due to the attractive exterior of the housing. Moreover, Teplomash curtains will cost no more than 30-80 thousand rubles. Among the promising models, it is worth highlighting the following devices:
And the Teplomash brand has very presentable and productive horizontal curtains with lighting, designed to serve store openings, shopping centers, cafes, restaurants.
This manufacturer produces a whole series of water-type curtains - “Tropic X”. But not every model in this series belongs to the industrial segment of this equipment. And if you go through all the lineup series "Tropic X" then to the segment industrial equipment Only three settings can be attributed, namely:
As a result, despite the limited assortment, the Tropic X series demonstrates quite decent functionality and performance, which can be purchased for reasonable money.
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