Simulation and analysis of measuring position of radiant floor average surface temperature for two-pass style systems

Develops a heat transfer model for the system. Analyses the influences of structure heat resistance above pipes, indoor load, temperature difference between supply and return water and distance between two pipes on distribution of average surface temperature, and the results show the influences of the first three to be  negligible. Concludes that the average surface temperature of the floor between supply and return water pipes with various temperature differences is the same if the average temperature of supply and return water is the same, and the ratio of measuring position of average surface temperature to distance between two pipes is all 0.22 for the systems with different distance two between pipes when temperature difference of two adjacent pipes is 0 ℃.