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Solar-Powered Adsorption Icemaker With Double-Stage Mass Recovery Cycle

机译:具有双阶段质量回收周期的太阳能吸附式制冰机

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The performance of an adsorption icemaker prototype operating in a double-stage mass recovery cycle was experimentally investigated under the generation temperature of 75℃. The prototype was heated in the regeneration phase by an electric heater, and an analytical model was employed to assess the daily number of cycles and the ice production, if evacuated tube solar collectors were used to supply the regeneration heat. It was found that the parasitic heat consumed by the metallic part of the reactor greatly reduced the coefficient of performance (COP) and ice production per unit area of solar collector. A reduction of the parasitic heat by 60% would increase the COP in 54%, and the daily ice production per unit area of solar collector in 50 to 54%, depending on the insolation. The performance of the studied prototype was inferior to the performance of some prototypes presented in the literature, which were directly heated by solar energy and used methanol as refrigerant, but this type of prototype could be an alternative to avoid subatmospheric working pressures and to provide ice on rainy and low insolation days, if waste heat or another heat source is available.
机译:在产生温度为75℃的条件下,对吸附制冰机原型在二级质量回收循环中的性能进行了实验研究。如果使用真空管式太阳能集热器提供再生热,则原型在电热器的再生阶段通过电加热器加热,并采用分析模型评估每日循环次数和制冰量。发现反应器的金属部分消耗的寄生热量极大地降低了太阳能收集器每单位面积的性能系数(COP)和产冰量。减少60%的寄生热量将使COP提高54%,将太阳能集热器每单位面积的每日冰产量提高50%至54%(取决于日照)。所研究的原型的性能不如文献中介绍的某些原型的性能差,这些原型通过太阳能直接加热并使用甲醇作为制冷剂,但是这种类型的原型可以作为避免低于大气压的工作压力并提供冰的替代方法。如果有余热或其他热源,则在阴雨天和低日照时使用。

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