摘要
经济性是制约太阳能空调普及推广应用的难题。文中介绍了一种太阳能空调和热水站综合系统方案,即在居民住宅楼的屋顶布置太阳能集热器阵,结合地源水低温热源系统,建设全年供应全体住户生活热水的太阳能热水站,以及夏季和冬季供应顶一、二层住户空调冷、热水的综合系统,提出了一种双效与单效耦合的板壳式溴化锂吸收式制冷机循环方案,白天日照时段采用双效循环运行并进行蓄热,而在其余时段切换为单效循环利用蓄热运行。该方案不仅效率高、而且其单位体积蓄能罐的蓄能密度极大,可实现无需用辅助能源而完全靠太阳能进行昼夜空调。由于综合利用系统中集热器的投资费用被所有热水用户分摊,空调用户的投资可很快从节省的电费中得到回收。
Economic benefit is still the main concern for application of solar driven air-conditioning.A new scheme of utilization of solar energy is presented,which focuses residential building as the object, arranges solar collector array on the roof of the building and combines with groundsource water coils, to supply domestic hot water for whole community in the building year-round and to supply air-conditioning chilling water in summer or heating water in winter for rooms in top one or two stairs with a LiBr absorption machine.A double-heat-source LiBr chiller consisted in plate-shell heat exchangers is proposed,which operates with double-effect cycle in meanwhile accumulates heat in a hot water tank during irradiation daytime with the steam supplied by the solar collector array and with single-effect one in the remaining time with the heat supplied by the accumulated hot water tank ,thus its density of energy accumulation is so high that It might drive the aironditioner day after night without back-up energy resource.Furthermore, since the cost of the massive solar collectors is shared by all the domestic hot water users ,the investigation on the airconditioning installations proper by the air-conditioning users can be soon reclaimed from the elec- tricity-bill saving.
出处
《能源研究与利用》
2007年第5期5-9,共5页
Energy Research & Utilization
基金
东南大学"211"
"985"工程资助项目
关键词
太阳能空调
溴化锂吸收式制冷机
太阳能热水站
板壳式换热器
蓄能
solar air-conditioning
LiBr absorption chiller
solar water heater
plate-shell heat exchanger
energy accumulation
