太阳能与热泵联合干燥茶叶的应用研究  

APPLICATION RESEARCH OF COMBINED DRYING TEA WITH SOLAR ENERGY AND HEAT PUMP SYSTEM

作　　者：明廷玉 李保国[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《太阳能学报》2017年第10期2730-2736,共7页Acta Energiae Solaris Sinica

基　　金：上海市教委科研创新项目(14ZZ133);上海市助推计划(ZB1307LG);上海市联盟计划(LM201652)

摘　　要：为开发茶叶干燥新方法,利用太阳能集热与热泵联合干燥代替传统的干燥方式,采用相变蓄热和辅助热源保证干燥系统能够全天候工作。使用空气源热泵技术作为太阳能集热系统辅助热源和策略控制,达到节能高效目的。经干燥茶叶试验研究表明,采用相变蓄热太阳能与空气源热泵联合干燥,能够解决干燥系统能量供应的稳定性和经济性问题,整个联合干燥系统与燃煤烘箱干燥相比,节能36.7%~41.1%,节能减排效果显著。从茶叶的干燥特性试验中得出在50~60℃间,均可在8 h内达到所要求的含水率,干燥时间随干燥风温的升高而缩短,干燥后的茶叶质量等级相比同等条件下的传统干燥方式有所提高。In order to develop a new method for drying tea, the drying system combining solar energy with heat pump is used to replace the traditional drying methods, using phase change heat storage and auxiliary heat resource can ensure that the drying system is able to work all day, using air source heat pump technology as the auxiliary heat resource of solar collector system and tactics control can reach the goal of high efficiency and energy-saving. The study shows that drying system combining solar energy phase change heat storage and air source heat pump can solve the stability of energy supply and economy. Compared with coal-fired steam oven can reach 36.7%-41.1%, energy conservation and emission drying , the energy saving of combining drying system reduction effect is remarkable. From the drying characteristic test of the tea in 50-60 ℃, all can achieve the required moisture content in 8h, the drying time shortens along with the increase of drying air temperature, and the tea quality grade increases compared to the traditional tea drying under the same condition.

关 键 词：太阳能干燥 太阳集热器 空气源热泵 茶叶干燥 

分 类 号：TS272[农业科学—茶叶生产加工] TK519[轻工技术与工程—农产品加工及贮藏工程]