首页 | 官方网站   微博 | 高级检索  
     


An efficient solar-powered adsorption chiller and its application in low-temperature grain storage
Authors:HL Luo  RZ Wang  YJ Dai  JY Wu  JM Shen  BB Zhang
Affiliation:aInstitute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China;bBranch of Jiangsu Province, Chinese State Grain Administration Company, Nanjing 210012, China;cYangzhou Grain Depot, Chinese State Grain Administration Company, Yangzhou 225009, China
Abstract:A novel solar-powered adsorption cooling system for low-temperature grain storage has been built, which consists of a solar-powered water heating system, a silica gel–water adsorption chiller, a cooling tower and a fan coil unit. The adsorption chiller is composed of two identical adsorption units, each of them containing an adsorber, a condenser, and an evaporator/receiver. The two water evaporators have been incorporated into one methanol evaporator by the use of the concept of a gravity heat pipe. In order to improve the system efficiency and achieve continuous cooling production, the adsorbers are operated out-of-phase, and heat and mass recovery processes have been used. During the period from July to September of 2004, the system was put into experimental operation to cool the headspace (i.e., the air volume above the grain) of a grain bin. Three months of operation showed promising performance. The chiller had a cooling power between 66 and 90 W per m2 of collector surface, with a daily solar cooling coefficient of performance (COPsolar) ranging from 0.096 to 0.13. The electric cooling COP was between 2.6 and 3.4.
Keywords:Solar-powered water heating system  Adsorption refrigeration  Water chiller  Low-temperature storage  Grain storage
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号