Water heat curtain is often abbreviated as a thermal air curtain with hot water supply. In the role of heat source is hot water from the central heating system. It is used in rooms where there is central heating with hot water (60 - 80 °C).
The advantages are significant energy savings, low operating costs, exceptional reliability and safety. The installation costs of a water curtain are correspondingly higher, as pipework, an additional pump and a water filter have to be installed. Water curtains are quite well protected against breakdowns and loss of performance due to the use of poor quality water. Nevertheless, the installation of a water filter should not be neglected.
Thermal air curtains with hot water supply are usually produced in large and heavy-duty models, water heating is rarely used for small openings. This is due to the fact that the optimum ratio between the cost of installation and the cost of operation of the air curtain is achieved when water curtains are used in industrial buildings. Examples of buildings where it is good to use water curtains are airports.
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