Heat curtains at the entrance doors. Electric heat curtain

Thermal curtains on the entrance doors are designed to protect the premises from the entry of cold air from the outside. The principle of operation of such devices is the use of a powerful fan that is installed inside the curtain and creates a high-speed warm air flow. Such devices form an "invisible barrier", which does not allow heated air to go outside, and a cold one to go inside.

How to choose?

The choice of the thermal curtain depends on its type. The efficiency of the device consists in the speed of the air flow, the width of the doorway and the height at which the fan heater is installed.

The higher the aperture is, the greater the airflow rate created by the device. The curtain must cover the entire opening, so it's best to install the device as close to it as possible. For doorways that are wider than standard ones, it is advisable to install several curtains, so that they are adjacent and form a single system. In industrial or residential premises with large openings, it is necessary to provide for the effect of wind on the draft speed that arise inside the building. All these parameters apply to large buildings that have several outputs and inputs.

Benefits

Thermal curtains on the entrance doors have a number of advantages that you need to know about when buying.

1. Protection:
- from penetration of fine dust, exhaust gases, soot and various insects;
- heat storage inside the room;
- protection in the winter from cold air.

2. Savings:

- You can save up to 30% of electricity. When using air curtains, it is easy to equalize the temperature regime. Due to this, significant energy savings are achieved. Since warm air is a priori easier than cold, it rises to the ceiling. In the floor area is a layer of cooler and heavier air. Because of these temperature differences, a gradient appears in the room. The air flow that comes from the fan heater is directed downward. Due to this, the vertical difference between the temperatures can be significantly reduced. As a result, degrees are stabilized in the "middle" area of the room, where the person is.
- Additional heating of the room. A thermal curtain to the front door, if properly installed, provides additional heating, as the warm air flows into the middle of the building even with the door open. If it is closed, the amount of heat increases several times.

3. Comfort. Thanks to these devices, it is possible to neutralize drafts and thereby reduce the likelihood of ARVI disease. In the summer, you can air-condition the room and maintain a pleasant freshness, the curtain will also not let in hot air and dust.

Principle of operation

All the heat curtains on the entrance doors have a fan, which forms an active air flow, directed to the doorway. Air jets due to the action of kinetic energy create an insurmountable barrier that can easily be compared with a waterfall that prevents the flow of air between two rooms with different pressures and microclimate. The movement should be directed so that approximately 30% of the air is directed outwards. This "ejection" is needed in order to prevent cold drafts at the floor.

Mounting the device

The thermal curtain on the front door can not be installed as you please, since strict sanitary and epidemiological rules must be observed in this matter. Normative documentation clearly describes the power, height of the installation, as well as other quantities that are suitable for a particular room. It should be noted that for areas in which there are several inputs, you need to use more powerful units. And already in buildings in which there are tambours, you can hang the device, whose power indicators are several times lower than the standard values. An important aspect is the adjustment of the device, in particular, the necessary setting is the setting of the correct temperature and the speed of the supplied air.

In order to properly perform the installation, it is necessary to calculate the thermal curtains for power and speed, which is best used by professionals at the stage of choosing the device, and then entrust it with questions and tuning. Otherwise, the resulting savings can result in unnecessary costs and complaints from customers about the device's malfunctioning. If you still decided to do without the help of specialists, then in order to calculate the thermal curtain for power, the following rules should be used:

1. Since the installation of a thermal curtain is different in comparison with typical heaters, the quality of heating can only be calculated subjectively. The curtain serves as a door, thereby eliminating heat loss. On this parameter, you need to pay attention, choosing such a device.

2. In order to calculate the temperature, you need to calculate the difference between the amount of blown and sucked air.

3. Most devices already have a built-in programmed heating capacity.

4. Some manufacturers are engaged in the production of the same models, but only with different modifications in power (for example, 12 and 15 kW).

Types: electric and water curtains

For those who want to get a comfortable atmosphere in the room, it is advisable to contact the heating experts who will prompt you how to choose a heat curtain. Features and types of such devices are described below.

1. Electric heat curtains are devices that operate only from an electric current. This type is the most common, as it has a lot of advantages. The main advantages are: affordability, location almost anywhere and ease of installation.

In winter, a thermal electric curtain allows creating a comfortable and comfortable atmosphere for visitors and employees. Also, such a device can be used as an additional heater. In the summer, when the street is full of dust, various insects and exhaust gases, such an obstacle prevents all this from getting inside the room.

2. Air thermal water curtains are such devices in which hot water acts as a coolant and they are most often connected to a hot water supply system or to general heating. The main advantages of this device include its minimum operating costs, since they work practically without electricity. The drawbacks in this device are much greater than the electric curtain has. They include the cost (it is 3-5 times higher) and the installation, which is carried out only when installing water supply / heating systems or when repairing the premises.

Horizontal and vertical devices

Most often, heat curtains are designed for horizontal installation on top of the opening opening. But there are such cases, that it is inexpedient. Then you can use a vertical curtain, which is installed on the side of the opening.

Naturally, the air flow will be directed horizontally. The length of such a device must be at least ¾ of the height of the protected opening. In other parameters, the apparatuses do not differ from each other in anything.

Control

All heat curtains on the entrance doors are equipped with power controllers and a switch. Also, some models have a switch that changes the intensity of the flow. Curtains for standard doors are equipped with built-in controls, and more powerful systems in their kit have remote consoles. If desired, a thermostat is installed, which will serve to shut down the system when it reaches the required temperature. This device can control both the whole curtain and its individual elements.

Performance and dimensions

When choosing such devices, first of all it is necessary to pay attention to their length, namely to the blowing nozzle. As with a horizontal installation, it should be larger than the width of the doorway by 10 cm. In the case of vertical installation, the nozzles should cover ¾ of the opening height. These options will allow you to screen the entire entry space.

Next, what you need to pay attention to is performance. Due to this parameter it is possible to calculate how many cubic meters it can pump the device in 1 hour. Also, you should not save on the capacity of the device or purchase devices for doors that are directly intended for industrial windows or commercial premises. It is necessary to understand that the excess power is not useful, because it is not the air temperature, but the speed of the initial flow can protect against the ingress of the street flow.

Price list

For a comfortable stay in a commercial or industrial building a thermal curtain is used. The prices for such devices are in a fairly wide range and depend on a huge number of factors, which can be attributed to the manufacturer and capacity. Consider factors that primarily affect the cost of devices:
- the length of the apparatus can vary from 0.6 m to 2 m;
- the type of heating elements and power (of course, the better these indicators, the greater the cost of the device);
- the source of heat, the cost of the whole veil will also depend on it (in case of using water the device will cost more, but later it will pay for itself, since there will be no need to use a large amount of electricity);
- Ways to control the veil, in case of using the remote, the price will be higher.

Given all of the above factors, you can determine what kind of thermal curtain you need. The prices for such devices, in general, vary from 200 to 2000 dollars and are selected individually for each. The simplest and cheapest devices have a price range from 200 to 500, middle class from 500 to 1500 and premium from 1500 conventional units and above.

Application

Most of the devices are irreplaceable for offices, shops, cafes and restaurants. With a sufficiently large number of visitors, especially in the winter season, such devices are necessary for employees who work in similar institutions.

Recently, veils have become widespread in private homes and apartments. This is very easy to explain, since in these buildings there is a very common draft problem. It is not necessary to think that the devices will absorb a large amount of electricity, since for these options there are devices with a consumption of 42p3110w, and they are economical. It is best to purchase curtains with a thermostat, in which case the bills for electricity will not bite, and the device will become fully automated.

Classification

Most often, heat curtains can be classified as:
- Minis trailers - such devices are installed in openings with small dimensions, such as windows for goods, cash dispensers and kiosks, in general where there is a need for a small flow of warm air (the height of the opening should be no more than 150cm and the width 80cm);
- medium - can be installed above the entrance doors to a height of 2.5 (3.5) m;
- large - they are intended to protect small industrial openings, the height of which varies within 3,5-7m;
- Heavy duty - they are intended for large and closed industrial entrances, the height of which can be 8-10-12 and more meters.

Thermal curtains Frico

Frico Sweden has been producing thermal curtains for a long time, therefore this company occupies 80% of the market and is practically a quality standard with which other manufacturers are compared. The equipment of this brand is distinguished by its low noise level, high reliability and a fairly wide range of models. All industrial variants are produced in two types - with water and electric heating. Like heating elements, all types of Frico air curtains use TENs.

Curtains 1500 mm long have a single turbine of large diameter, thus ensuring a uniform and powerful airflow. At the same time, they are the most expensive options, and therefore some buyers prefer other brands.