Charcoal-methanol adsorption refrigerator powered by a compound parabolic concentrating solar collector
Charcoal-methanol adsorption refrigerator powered by a compound parabolic concentrating solar collector
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DOI：
10.1016/0038-092x(94)90481-2
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发表时间：
1994-08
期刊：
影响因子：
6.7
通讯作者：
O. Headley;A. Kothdiwala;I. A. McDoom
中科院分区：
文献类型：
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作者：
O. Headley;A. Kothdiwala;I. A. McDoom
采用浓度比为3.9、孔径面积为2.0 m2的复合型抛物面聚光太阳能集热器（CPC），以活性炭为吸附介质，甲醇为工质，为间歇式固体吸附制冷机和制冰机供电。CPC的铜管接收器装有2.5公斤进口吸附剂207E3。只有在发现活性炭（ACJ1，由本地椰子壳制成）的性能不如进口吸附剂时，才会使用该吸附剂。在蒸发器温度为- 6°C的情况下，产生了高达1千克的冰，净太阳能性能系数（COP）为0.02量级。当日晒量为26.8 MJ/m−2时，记录的接收器/吸附剂最高温度为154°C。温度超过150°C是不可取的，因为它有利于甲醇转化为二甲醚，二甲醚是一种抑制冷凝和吸附的不可冷凝气体。该系统的主要优点是即使在阴天（日照~ 10 MJ/M−2）也能产生冰。
A compound parabolic concentrating solar collector (CPC) of concentration ratio 3.9 and aperture area 2.0 m2was used to power an intermittent solid adsorption refrigerator and ice maker using activated charcoal (carbon) as the adsorbing medium and methanol as the working fluid. The copper tube receiver of the CPC was packed with 2.5 kg of imported adsorbent 207E3, which was only utilised when the performance of activated charcoal (ACJ1, produced from local coconut shells) was found to be inferior to the imported adsorbent. Up to 1 kg of ice at an evaporator temperature of −6°C was produced, with the net solar coefficient of performance (COP) being of the order of 0.02. Maximum receiver/adsorbent temperature recorded was 154°C on a day when the insolation was 26.8 MJ/m−2. Temperatures in excess of 150°C are undesirable since they favour the conversion of methanol to dimethyl ether, a noncondensable gas which inhibits both condensation and adsorption. The major advantage of this system is its ability to produce ice even on overcast days (insolation ∼ 10 MJ/M−2).