最近,北京市太阳能研究所研制成功一种小型简易太阳能水泵,其外观见本文照片。整个装置由扁管式黑铬集热器(4平方米)、单体隔膜泵、专用工质循环泵和列管冷凝器组成,戊烷为工质。当年平均日射强度为500大卡/米~2·时的条件下,每小时约能抽水500公斤,扬程达10米以上。小型简易太阳能水泵与常规气压式水泵的工作原理基本相同,但也作了一些改进。在北京九月上旬的晴天,水泵能从上午十时半稳定地运行到下午三时半。集热器内蒸汽压力为1.3—2.4公斤。由于此泵是单体隔膜泵,故存在断续扬水和效率 Recently, Beijing Solar Energy Institute successfully developed a small simple solar pump, the appearance of this article photos. The whole device consists of a flat tube type black chrome collector (4 square meters), a single diaphragm pump, a dedicated working fluid circulation pump and a tube condenser, and pentane as working fluid. Under the conditions of an average daily solar radiation intensity of 500 kcal / m ~ 2 · h, about 500 kg of water can be pumped per hour and the lift can reach 10 meters or more. Small simple solar pump and conventional pressure pump works basically the same, but also made some improvements. On sunny days in early September in Beijing, the pump can run stably from 10.30 am to 3.30pm. The collector steam pressure is 1.3-2.4 kg. Because this pump is a single diaphragm pump, there is intermittent pumping and efficiency