| Solar energy is as clean environmental protection of renewable energy,its development and utilization become effective ways of solving environmental problems in this century. solar used for building heating and cooling can not only reduce the pollution of the environment,and also can greatly reduce energy consumption.This paper presents a new type of solar-air composite heat pump system,main analyzed indoor heating effect of qualification and the multifunctional system application from solar-thermal systems and heat storage systems and air source heat pump combination.Through the new control strategy,fusion the solar energy and the use of air source heat pump,with higher system comprehensive utilization and low operating cost,achieving architectural air conditioning and making hot water function.This paper first reviews the solar energy in building hot water,heating field of application, and made the economic contrast analysis,pointed out that solar energy has incomparable advantage compared with other energy.Combining subject,and made the solar heating experiment,Acquisition each system part data in winter heating time and no heating time.Combined experimental data,comprehensive analysis building heating effect of qualification from solar-thermal systems and heat storage system,Draw solar system satisfies the indoor heating workman 30% advisable,heat storage system main consideration to meet user hot water needs.For solar heating economic contrast analysis for building heating,and points out that the solar energy has high efficiency integrated system,low operating cost,short initial investment payback period and other advantages compared with burning gas,central heating system synthetical.Secondly, according to the analysis results of solar system and heat storage system,it puts forward a new solar-air composite heat pump system,the system has two tank.Heating and satisfy the four seasons hot water supply at the same time,improving the efficiency of solar energy collectors,air source heat pump units use three heat exchanger and two series,Better extracte water heat from tank and protect water heat exchanger in the situation of low meet antifreeze requirements.Adopting ingenious control strategy,achieve architectural winter heating,summer cooling,annual hot water supply.Solar auxiliary heating and summer heat pump system hot water become a system key energy-saving technology.Through the designing and calculationing of various parts for the system,to determine the best matching relation between each part system, making whole system equipment utilization rate achieve the highest。Again, to make economy and energy-saving benefit analysis of new solar-air composite heat pump system,The system has low operating cost,the investment capital is recovered short and other advantages compare with households type central air conditioning,electrothermal+ household air-conditioner.And calculates that the solar system festival energy 16647.6 MJ,energy saving cost 2497.1 yuan,static the investment capital is recovered in 3 years,dynamic the investment capital can be recovered in 4.56 years,life carbon-dioxide emissions within about 34.5 t。Its environmental protection are obvious energy saving efficiency,and has a broad prospects for development,it has the profound significance for seeking to solve two big social problems of energy and environmental.
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