Application of Solar Energy and Gas Compound Hot Water Supply Technique

With energy saving and comfort as top priorities, a hot water supply system is designed with solar energy and gas as compound heat sources. In the design, mathematical models are set up for the solar energy and gas compound hot water system and for its economic evaluation. Taking a three-bedroom flat building in Guangzhou City for example, a whole year's energy consumption for domestic hot water is simulated; the gas consumption is calculated; comparisons are made between the new system and the gas hot water supply system in terms of their technique, economy and energy efficiency. Results show that the solar energy and gas compound hot water supply system effectively saves energy and has good economic benefits.