Experimental study on heating characteristics and control strategies of ground source heat pump and radiant floor heating system in an office building

Abstract

In building energy consumption, the proportion of heating in energy consumption is very large. From the point of view of energy saving and thermal comfort, radiant floor heating system needs to be popularized and applied. This study takes the ground source heat pump and radiant floor heating system of an energy-saving demonstration building as the experimental plat-form. The indoor temperature of the operating system is obtained by the instrument at different heights. Indoor temperature fluctuation and distribution and the heating characteristics of the system can be obtained. Results show that the indoor temperature of the heating system meets human thermal comfort, and the indoor temperature of room which receives the solar radiation can still be maintained more than 18 °C in work time within two days when the sys-tem is closed. Moreover, valley electric operation and storage tank system operation mode makes the ground source heat pump and radiant floor heating system more efficient. The sys-tem is worth widely being used.