Combined System Of Solar Energy And Ground Source Heat Pump In Residential Building

Energy and environment is the main influencing factor in our country’s national economy sustainable and stable development. energy sustainable development has become one of the basic national policy of our country. As a new building energy-saving technology, Solar Energy-ground source heat pump system in residential building makes use of the renewable energy geothermal energy and solar power comprehensively. The new technology attracts more and more attention and research applications due to its unique advantage of energy conservation and environmental pollution.In this paper, the load characteristics of residential building’s the air conditioning of continuous operation and intermittent operation in six representative cities (Harbin in severe cold-A region and Shenyang in severe Cold-B region and cold region,such as Beijing, Xi’an, Jinan and Shanghai in summer-hot and winter-cold) of three heat partitions was simulated, and the simulation results were analyzed and compared. Design and operation control strategy of solar-composite ground source heat pump system of residential building which combine solar heat collection system and buried tube ground source heat pump system were introduced, and the underground temperature changes of the system in different-operating conditions were simulated and analyzed.Firstly, the Hourly load throughout the year and the load of the air conditioning of continuous operation and intermittent operation in six cities was simulated, and the characteristic of the load of the air conditioning in conditions of the continuous and intermittent operation was analyzed by DeST load simulation software.Secondly, the system design process and the control strategy in different operating conditions were given.Thirdly, the changes of underground temperature field were simulated by "Geothermal Star" among the cities of the cold zone and summer-hot and winter-cold zone which simply use ground-source heat pump systems (including continuous operation and intermittent operation of summer air-conditioning), the composite system (including intermittent operation of summer air-conditioning), the changes of the underground temperature field of the summer air conditioning run in intermittent operation and continuous operation in different cities were obtained. The hours of the underground heat storage of the areas of typical cities which are applicable to composite systems and different applicable areas were obtained simultaneously.At last, the economy and feasibility of the composite system were analyzed on the base of operating cost between a single ground source heat pump and the composite system in residential building.