Heating performance of coupled hot- water and hot- wall heating system based on Chinese kang

Presents a heating system combined hot- wall type Chinese kang with hot- water heating system. Through adding a collector above the combustion chamber of the hot wall, and installing radiators inside the room, transfers a part of heat energy produced by the hot- wall system using hot water to the other rooms without hot wall and kang. Experimentally studies the thermal performance of the kang and the hot- water heating system as well as the indoor thermal environment. The results show that this combined heating system can meet short- term heating requirements of other rooms without hot wall and kang under the condition of ensuring heating requirement of the room with kang, and improve thermal comfort of the kang; different kinds of biomass fuels may be used with this heating system, thus reducing commercial energy consumption in rural houses.