Experimental analysis on thermal response characteristics of radiant floor heating systems

Carries out some experiments and explores the time response characteristics of floor surface temperature and indoor air temperature influenced by initial floor surface temperature, supply water temperature, tube pitch and outdoor air temperature under initial operation mode and onoff control operation mode. The results show that the floor surface temperature increases exponentially with time of heating. Initial heating surface temperature change does not affect the surface temperature change rule, but affects the heating time under the system initial operation mode. Under the onoff control operation mode, the system heating duration is affected by water temperature, tube pitch and thermal properties of floor construction and materials. Indoor air temperature is changed by floor surface temperature and the effect of outdoor air temperature is relatively small,and building envelope inner surface temperature and indoor air temperature are very close.