利用太阳能致冷有多种途径,如压缩式致冷、蒸汽喷射式致冷以及吸收式致冷等。压缩式致冷所需的集热温度较高,需要采用真空管集热器或聚焦型集热器,以致成本较高;蒸汽喷射式致冷不但要求较高的集热温度,而且效率也很低(0.2—0.3),故目前很少采用;吸收式致冷系统所需集热温度较低(70—90℃),利用一般的平板型集热器即可满足要求,效率也较高 There are many ways to use solar refrigeration, such as compression refrigeration, steam jet refrigeration and absorption refrigeration. Compression refrigeration required for the high temperature of the collector, the need to use vacuum tube collectors or focusing collectors, resulting in higher costs; steam jet refrigeration not only requires a high collector temperature, but also very low efficiency (0.2-0.3), so it is seldom used at present; the heat collection temperature required by the absorption refrigeration system is low (70-90 ℃), and the general flat-type heat collector can meet the requirements and the efficiency is high