The main option seems simpler: the existing floor is laid fuel cells, is pouring over a thin layer (2-3 cm) cable ties. But if in the first case we have an opportunity to lay a thick layer of insulation (3-5 cm), and pour concrete over a thickness of about 5 cm, in the second case, we do not even know what is in the body of the old floor. There may lie metal beams or other structures, which will lose heat even on street walls. Therefore, if you can put a layer of insulation, the power falling on a square meter of the floor, will be small – 90-120 W/m2. A layer of insulation if not, you will have to compensate for the loss of heat excess installed capacity.
If we do a full system of PEX radiant heating, the first is thermal design, and only then – to select the necessary equipment. It is this: if the floors, electrical, then the cable in a thick concrete screed (not less than 10-15 cm), which plays the role teploakkumulyatora. This solution is used forPEX radiant heating of offices, production areas and where there are no people at night. After all reasonably possible to heat the floor at night when electricity grid is generated in excess and it is cheap. But during the day take advantage of the warm night. The same system can be constructed on the basis of water-heated floors. But there teploakkumulyatora role will play a special capacity drive, in which the coolant is heated to maximum temperature.
If then by means of special Taco heating valves are added to this heated coolant is circulating in the system that allows long-term use of previously accumulated heat. With direct PEX radiant heating control system continuously monitors the air temperature in the room and, if necessary, includesPEX radiant heating, regardless of time of day and the tariff.
May 14th, 2010
