Thermal air curtains -innogenation engineering device designed to prevent the mixing of warm and cold air media among themselves. The curtains are widely popular as to arrange hallways in residential buildings and administrative buildings - shops, supermarkets, offices, warehouses, etc. However, how to choose the optimal version of the device that will satisfy all the requirements?
Features of equipment
The air curtain is a powerful fan heater that directs air flow in the desired direction. This device is mounted on the sides of the doorways or directly above them. The principle of operation lies in the following: by means of a fan located inside the module, high-speed "flat panel" of air is formed. This is how an invisible barrier is created, which limits the indoor indoor medium from external.
The scope of application of climate equipment wide - curtains are mounted in supermarkets, shopping centers, exhibition areas and trading pavilions - everywhere where the intensive flow of visitors requires frequent opening of the doors. In addition, this device is relevant both in winter, allowing you to save on energy consumption and in the summer, since it helps to hold the conditioned cold indoor.
Parameters for selection of thermal curtain
When selecting a thermal curtain, a number of fundamental factors should be considered, which affect the functionality and feasibility of installing equipment. So, the main parameters for the choice are:
- device dimensions and performance;
- type of heat carrier;
- mounting method;
- power and category of heating elements;
- management method.
Sizes and performance
The dimensions of the air-thermal curtain may vary depending on the purpose of the device. The length can be varied within 700-2000 mm, however, the most popular type of equipment is a device with a length of 800-100 mm. Often, such curtains are mounted in the doorways of large areas.
Consider the features you need to know when choosing an equipment:
- The device must have a length of equal or somewhat greater than the dimensions of the doorway. This will allow the vertical stream of air to completely protect the space from the fall of cold air masses.
- If the opening exceeds 2 meters, several thermal technician units should be installed, adjacent to each other.
- The higher the doorway, the greater productivity should have a veil.
Productivity criteria, also called "pumping", is the main factor that affects the performance of the device. It depends on the speed of the movement of the "air palabing", and accordingly the height that the curtain will be able to provide.
Since the standard dimensions of the opening range from 850-1000 mm wide, and 2000-2200 mm in length, the optimal model for the air curtain will be the device with the possibility of pumping up to 900 m 3/ h. This will ensure the speed of air jet to 8 m / s at the outlet of the curtain, and up to 2 m / s near the floor.
Type of coolant
Before you purchase a veil, it is necessary to take into account such a parameter as a coolant. Experts allocate three types of equipment, depending on the heating method of the air flow:
- water curtain;
- electric;
- gas.
Electric thermal curtains are the most popular variety of products that has a wide scope of application: from a large gate in industrial pavilions to doors and window openings. The main advantages Electric curtains are:
- simplicity in control;
- a large assortment;
- low cost.
But K. disadvantage It can be attributed to the fact that this type of curtain will require considerable expenses for electricity.
Gas heat curtains are the most expensive option, which is characterized by narrow specific application: hangars, large workshops, depot. The heat source is incinerated propane or natural gas. Among advantages Acquisitions can be allocated aspects:
- low operational costs;
- safe maintenance of heat in winter;
- high efficiency - over 90% due to the fact that heat is produced inside the housing, without the involvement of intermediate coolants.
To disadvantages It is possible to attribute the high cost of equipment, as well as the fact that this type of curtain is not suitable for exploitation in small rooms.
Thermal veil of water type – an alternative that can be installed in those places where it is possible to suspend hot water supply. The main advantages operation of this type of curtain are:
- minimal electricity consumption;
- ability to use for different classes of objects with large doorways;
- high power.
but disadvantage is the fact that the water curtain fails more often than other types of devices. This is due to the fact that there is often a breakthrough breakthrough, and expert waste to repair equipment.
Device power and heater type
Under this parameter means the power of the action of the heating elements located inside the housing. This parameter is not fundamental, since the main role is assigned not to air temperature, but its intensity of its movement. However, due to the caloric elements, the equipment is capable not only to perform their own direct function - cut off air masses, but also increase the temperature indoors:
- for rooms where there is no central heating, 30 m 3 it will take about 1 kW;
- for the heated room, the curtain of low power is enough or without heating.
Determine these parameters can be used by the type of heating elements. Today there are two types:
- spiral;
- Tenny element.
TEN - This is the most profitable and expensive option. The device is a graphite heater, which is placed inside a free metal tube. The rest of the space is filled with quartz sand with high thermal conductivity. Such elements have a long service life, as well as safe during operation.
Spiral variety of heater It is a nichrome wire that has a curl shape. This type of elements is used not one decade and has a number of disadvantages, such as: strong heating of the device, low life and high power consumption. But at cost and accessibility it turns out in a winning position.
Sweese management method
Modern devices are equipped with a heating intensity regulator, and sometimes an air jet speed controller. In general, the thermal curtain models have at least three switches. The control panel can be used as a remote device and built-in.
There are also devices with a thermostat, a timer or angle regulator of air supply. And the most high-tech curtains have special sensors that react to the opening / closing of the doors, independently control the power and air supply temperature.
Method of installation
Modern manufacturers offer consumers a wide range of air curtains, which, according to the installation method, differ on the embedded, vertical and horizontal. Consider more detailed each type of device:
- Horizontal equipment is fixed with threaded rods, fasteners or brackets on high-strength design above the doorway.
- Built-in veil - type of device that consists of two blocks: module and grilles. The main module of the curtain is mounted behind the suspended ceiling so that its body is completely invisible, and only a decorative lattice remained outside. Through it, and the supply of air masses will be carried out.
- Vertical equipment is mounted to the floor or on the sides of the doorway.
Producers of thermal curtains
The most popular air curtain manufacturers today are the following trademarks:
- FRICO;
- Termoscreens;
- Pyrox;
- Olefini;
- Climate Line.
About 70% of the entire product range occupies the equipment from the Swedish fir FRICO and the Norwegian manufacturer Pyrox. Despite the prices of thermal curtains, devices from these firms are a benchmark, to which the products of other trademarks are equal. Among the competitive advantages of Scandinavian goods, the following can be distinguished:
- a wide assortment range - from compact models for window openings to large veins of industrial type;
- reliability provided by the use of high-quality TanNes;
- in devices, the length of which exceeds 1500 mm, use a single large-diameter turbine, which guarantees an intense and uniform air flow;
- long service life.
Despite the impressive advantages, Pyrox and Frico curtains are distinguished by high cost, due to which buyers prefer less expensive products.
Air-thermal vehicles from the English brand Termoscreens have less power, but are not inferior to the scandinances of reliability. Electrospiral is used as heating elements, and the air flow is provided by turbines of smaller diameter. But the cost of products is significantly lower than the analogues.
The curtains from the Greek brand Olefini offer a wide range of semi-industrial models of vertical type. These devices are distinguished by good "pumping", as well as low product costs. However, the curtains work quite noisily, due to which they are recommended to be used in industrial premises.
Thermal equipment from the Russian company Climate Line is a good alternative to foreign counterparts. In the models, a tank heater is used, as well as a single turbine that creates a powerful flow of air. This is the most affordable view of a curtain that can please effective pumping (750 m 3/ h for 1-meter curtain), as well as long service life.
Recommendations for the choice of thermal curtains can be seen on the video:
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