太阳能-溶液-热泵干燥系统节能分析  

Analysis on Energy Saving of Solar-Solution-Heat Pump Drying System

作　　者：熊慧灵 刘何清[1,2] 李永存[1] 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《建筑节能》2015年第5期56-60,共5页BUILDING ENERGY EFFICIENCY

基　　金：湖南省科技计划项目(2012FJ2001);国家自然科学基金项目(51474105)

摘　　要：结合溶液加热、除湿与热泵加热、除湿以及太阳能再生机理,提出了一种太阳能-溶液-热泵干燥系统。通过理论定性分析和实例计算的定量分析得出,夏季:太阳能-溶液-热泵干燥系统节能效果明显;过渡季节:当环境温度在20℃以上时,该系统具有一定的节能作用,且室外空气相对湿度越低,干燥室要求干燥温度越低,节能效果越明显,与常规系统相比,最高可提高65.9%。根据物料干燥室温湿度设定值,可确定冬季运行模式、夏季运行模式及太阳能-热泵联合运行模式的转换时机。Combining solution heating, dehumidification and heat pump heating, dehumidification and solar regeneration mechanism, a solar-solution-heat pump drying system was proposed. Through theoretical qualitative and quantitative analysis on examples, results show that energy-saving effect of the solar-solution-heat pump drying system is obvious in summer. In transition season, the system had the energy-raving effect when the environment temperature was above 20 ℃. And the lower the outdoor air relative humidity and required temperature of drying chamber was, the more obvious energy-saving effect of the system was. Compared with the conventional system, energy efficiency of the new system can be increased up to 65.9%. And according to the value that temperature and humidity are set in drying room, the best conversion timing can be determined about the operating mode of winter, summer and solar-heat pump joint.

关 键 词：太阳能 溶液除湿 热泵干燥 节能 

分 类 号：TK173[动力工程及工程热物理—热能工程]