Floor heating cold rooms. Calculation of the heating cable

The problem of soil freezing in cold rooms and ice rinks with artificial ice can be solved with the help of anti-freeze.

Installation of heating cables perform the same way as in the case of conventional concrete structures of the sexes. Floor heating system, refrigerator compartment necessarily overlap, since the desired warranty period is about 25-years-old, and repair of the system is impossible. Parallel to have two cable systems: one is osnovnoynoy (working), and the second - the backup.

The heating cable should be laid under the floor insulation, as necessary to protect against freezing basement floor. Cables should be installed directly on the soil surface or the basement and located at a depth of at least 5 cm below the layer of insulation.

If the room is there any support elements, installed capacity at the base around these elements should be higher, because in these places there are downward heat flux (heat loss through uninsulated concrete and steel structures).

Large rooms make sense to separate areas with separate systems for each. For example, a room of 300 m2 can be divided into three zones with the two systems in each. 

gutter heaters

Sensors on the wire for the thermostat should always be placed in protective gofrotrubku for easy replacement.

Calculation of the cable.

Design capacity for plants protection systems of soil freezing - 15 - 30 W/m2 (at least 15).

Down energy loss depends on the thermal conductivity of the floor structure, the desired temperature and base temperature of the cold room. The calculation is carried out in accordance with the following formula:

P [W/m2] = K × At °

where: At ° - temperature difference between the ground floor and the air in a cold room, and K - thermal conductivity of the floor in W/m2 ° C.