Application And Study On The Hybrid System Of Ground Source Heat Pump And Solar Energy In The Office Buildings

According to the current energy situation of china, using renewable energy and saving energy is a basic principle to promote the development of energy industry.The Hybrid System of Ground Source Heat Pump and Solar Energy air conditioning systemis a new energy-saving technology for heating and air-conditioning in buildings. It involves two kind of renewable energy use:solar energy and geothermal energy.It can be used as a building heat and cold sources, and so as to reduce energy consumption, protect the environment.This paper studies to analyze the necessity and advantages of the Hybrid System of Ground Source Heat Pump and Solar Energy air conditioning system and describes of the hybrid air conditioning system design methods.From analyze the characteristics of solar and shallow geothermal energy, we know that solar energy resource-rich region, richer areas and secondary areas are suitable for the use of solar energy systems. However, the region of which throughout a year using solar system, solar collector installation angle should be close to the local latitude. Analysis of shallow geothermal energy, soil heat capacity, thermal conductivity and thermal diffusivity are determining factors of soil thermal conductivity; Soil surface heat and heat loss of the existing soil also affect the soil temperature distribution.Second, the hour by hour load of the office building is calculated in a whole year by the DeST simulation software. It gives throughout the hourly load and calculates the monthly cumulative load, annual cumulative load, as well as the cumulative load.For a composite system designed to provide the basis data, so that it cans analysis the compound system of load imbalance of building.Then give a set of ground-source heat pumps-solar hybrid air conditioning system, by underground tube heat transfer systems and solar thermal systems running at the same time. To achieve the building air conditioning in summer and winter heating, hot water supply throughout the year, and underground storage and other functions.Application of compound system solution the cooling loads imbalances. It can be calculate the solar collector area of composite systems in running at optimum.This paper give the collector area when the underground heat exchanger of heat and heat absorbing different unbalance rate, by the solar resource distribution in different parts of a typical city.The results of paper show that at the same unbalanced rate rich and richer areas than change in smaller,secondary areas increase compared with the first two in a larger,deficiency areas compared with the most rich area increase about 1 time. Different unbalance rate change trend in each district under basically the same, unbalance rate of these smaller additional area less unbalance rate, the greater the additional area more. The time for ground heat exchanger supplementary energy, beginning in the fall and only compared to the winter season, solar collector area required to reduce by half.