Thermal performance of dry-type floor panel heating system

Presents the heat transfer model and develops the corresponding software. The experimental results show that the error between software calculation value and experimental result of the average floor temperature is less than 10％ and that of the operation temperature is 3％. Based on the software calculation concludes that the average floor temperature, indoor air temperature and operation temperature are decreased with increasing of the tube spacing and increased with increasing of the average temperature of supply and return water. The change rate of the indoor air temperature is less than that of the average floor temperature. Experimental results show that the operation temperature distribution is uniform in both horizontal and vertical direction and the operation temperature gradient in vertical direction is positive. When the system reaches stable conditions, the radiant heat quantity occupies 60％ of the total, but the floor temperature distribution is less uniform when compared with the wet-type floor panel heating system.