Study On Photovoltaic-Solar Assisted Heat Pump System And Multifunctional Domestic Heat Pump System

The normal fossil energy on earth is limited although the demand of energy for human development is never-ending. Searching for renewable energy and improving utility efficiency of energy are the main approach for the energy and the environmental issue. In Photovoltaic Solar Assisted Heat Pump (PV-SAHP) system, the heat pump recycle were used for the compound photovoltaic\thermal utility. PV-SAHP system is an effective application of solar energy. Multi-functional Domestic Heat Pump (MDHP) system can reach high efficiency of energy because the evaporating cooling energy and condensing heating energy can be utilized simultaneously by MDHP system. Thus the condensing heat pollution in summer is reduced.PV-SAHP system is an active compound system of photovoltaic/thermal application. The system can maintain the PV cell in a lower temperature for better photovoltaic performance and to get a higher temperature photo-thermal output. The coefficient of performance (COP) of PV-SAHP is improved because the evaporating process under insolation. Meanwhile the unstable features in winter of space heating and the evaporator frosting of normal heat pump are overcomed by PV-SAHP system.The photovoltaic evaporator as a key part of PV-SAHP system is combined with PV cells and a base evaporator panel made with special vacuum laminating technics to ensure that the base panel and PV cells are of high-quality bonding in providing the required electrical insulation and thermal conduction. Photovoltaic conversion and photo-thermal conversion can be done simultaneously for different wavelength incidence. Basing on the PV-SAHP experimental setup and system simulation, system performance and system optimization under the influence of solar radiation, condensing water temperature, compressor frequency, glass cover and other factors were studied in this work. Distributing parameters model of photovoltaic evaporator were developed to study the influence of the solar radiation, ambient temperature, the length of evaporating tube and the gap between tubs et al. on the evaporating,...