Nowadays, people in mounting numbers advocate energy conservation and emission reduction, and pursue high-quality life. The defects of original heating system are increasingly evident in winter. Most of northern cities inChinause central heating system. Whether someone is indoors or not, the system continues to supply heating during the heating period. The thermal energy supplied by the system is constant, which can not make the corresponding adjustment according to the changeable temperature of indoor and the different personal requirements. This is not humanized and creates a serious waste of thermal energy.