The supply and return water temperature of low-temperature hot water floor radiant heating system should be determined by calculation, and the water supply temperature should not be greater than 60℃. The water supply temperature of civil buildings should be 35~50℃, and the temperature difference between supply and return water should not be greater than 10℃. The working pressure of low-temperature hot water floor radiant heating system should not be greater than 0.8Mpa. When the building height exceeds 50m, vertical zoning should be carried out.

Liquid circulation system, namely low-temperature hot water floor radiant heating, is a heating method that uses hot water with the temperature not higher than 60℃ as heating medium, circulates in the heating pipeline, heats the floor, and supplies heat to the room through radiation (primary) and convection (secondary) heat transfer on the ground.

Radiant heating with heating cable on the ground is a heating method that uses low-temperature heating cable as the heat source to heat the floor and supply heat to the room through radiation (primary) and convection (secondary) heat transfer on the ground. Common heating cables are divided into single-core cables and double-core cables. Double-core cable has no magnetic field and radiation.

Extended data

Floor heating is a heating method in which hot water or heating cables with a temperature not higher than 60 degrees Celsius are buried in the coil system under the geothermal floor to heat the whole ground and radiate heat evenly indoors through the ground.

Compared with traditional heating methods, geothermal radiation heating has many characteristics such as comfort, energy saving and environmental protection. Abroad, this technology is not only widely used in civil houses, hospitals, shopping malls, office buildings, gymnasiums, swimming pools and other public buildings.

Baidu encyclopedia-floor heating

Baidu encyclopedia-technical specification for floor radiant heating