An efficient solar-powered adsorption chiller and its application in low-temperature grain storage
An efficient solar-powered adsorption chiller and its application in low-temperature grain storage
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DOI：
10.1016/j.solener.2006.09.001
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发表时间：
2007-05
期刊：
影响因子：
6.7
通讯作者：
H. L. Luo;Ruzhu Wang;Yanjun Dai;J. Wu;J. Shen;Bo Zhang
中科院分区：
文献类型：
--
作者：
H. L. Luo;Ruzhu Wang;Yanjun Dai;J. Wu;J. Shen;Bo Zhang
建立了一种新型的低温储粮太阳能吸附式制冷系统，该系统由太阳能热水系统、硅胶-水吸附式制冷机、冷却塔和风机盘管组成。吸附式制冷机由两个相同的吸附单元组成，每个单元均包含吸附器、冷凝器和蒸发器/接收器。利用重力热管的概念，将两台水蒸发器合并成一台甲醇蒸发器。为了提高系统效率和实现连续冷却生产，吸附器异相操作，并使用热质回收工艺。在2004年7月至9月期间，该系统投入实验操作以冷却顶部空间（即，谷物上方的空气体积）。三个月的运行显示出良好的业绩。制冷机的冷却功率为每平方米集热器表面66至90 W，每日太阳能冷却性能系数（COPsolar）为0.096至0.13。电冷却COP在2.6和3.4之间。
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 90W per m2of 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.