Optimal matching of heat collector area and photovoltaic panel area in liquid desiccant air conditioning systems driven by solar energy

 According to the special climatic conditions of high temperature, high humidity, intensive radiation and the lack of conventional energy supply in low latitude isolated islands, combines the solar power generation with the liquid desiccant air conditioning system, and analyses the air handling process and principle of the combined system. Studies the optimal matching ratio between the heat collector area and the photovoltaic panel area under the condition of limited roof area in isolated islands. Analyses the influences of indoor design temperature and relative humidity and unit area cooling load on the required roof area for the system. The results show that the indoor comfort requirements can be achieved when the area ratio of heat collector to photovoltaic panel is 1∶1.04 to 1∶2.34, and the smaller the roof area, the higher the proportion of needed photovoltaic area. The total roof area is greatly influenced by indoor design relative humidity. When the relative humidity is increased from 40% to 70%, the area of solar collector is reduced by about 42.0%, and the area of photovoltaic panel area is reduced by about 13.6%. When the unit area cooling load increases, the area of heat collector and photovoltaic panel increases proportionally, but the ratio remains unchangeable.