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针对热驱动的制冷方式,建立再吸附制冷试验台。该试验台主要包括4种再吸附制冷系统,每个系统具有高温吸附床与低温吸附床:MnCl2/BaCl2系统、NiCl2/BaCl2系统、NiCl2/NaBr系统以及MnCl2/NaBr系统。在室温环境自然制冷的情况下对比分析这4种工质对的工作性能,并通过对该试验台制冷输出冷水温度参数的记录,估算制冷量及制冷性能系数。由于再吸附系统产生的冷量大部分消耗在系统显热上,其制冷性能系数COP较低。实验结果发现MnCl2/NaBr系统有相对较高的制冷效率,从而为再吸附工质对的选择提供了参考。该简易实验台还可用于本科生教学实验。
For the heat-driven cooling mode, set up reabsorption refrigeration test bench. The test bench mainly consists of four kinds of reabsorption refrigeration systems, each system has a high temperature adsorption bed and a low temperature adsorption bed: MnCl2 / BaCl2 system, NiCl2 / BaCl2 system, NiCl2 / NaBr system and MnCl2 / NaBr system. In the case of natural cooling at room temperature, the performance of the four working pairs was compared and analyzed, and the cooling capacity and coefficient of cooling performance were estimated by recording the temperature parameters of the cooling output of the test stand. As most of the cold energy produced by the reabsorption system is consumed by the system, its coefficient of performance COP is lower. The experimental results show that MnCl2 / NaBr system has a relatively high cooling efficiency, which provides a reference for the choice of reboosting working fluid pair. The simple test bench can also be used for undergraduate teaching experiments.