太阳能驱动溶液除湿空调系统光热面积优化匹配研究

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

针对低纬度孤立岛礁高温、高湿、强辐射气候和常规能源供应困难的特殊条件,将太阳能发电与溶液除湿空调相结合,对组合系统的空气处理流程和原理进行了分析。在孤立岛礁有限的屋顶铺设面积条件下,对集热器和光伏板的铺设面积比例进行了优化匹配研究。分析了室内设计温湿度和单位面积冷负荷对系统所需屋顶铺设面积的影响。结果表明:集热器与光伏板面积之比为1∶1.04～1∶2.34时,可满足室内人员舒适需求,而且屋顶铺设面积越小,光伏板面积所占比例越大;室内设计相对湿度对屋顶铺设总面积影响较大,当相对湿度从40%增大到70%时,系统所需集热器面积约减少42.0%,光伏板面积约减少13.6%;当单位面积冷负荷增大时,所需集热器和光伏板面积呈相同比例增加,但二者面积之比保持不变。

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.