Experimental performance of a silica gel¿water adsorption chiller
Experimental performance of a silica gel¿water adsorption chiller
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DOI：
10.1016/j.applthermaleng.2004.06.012
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发表时间：
2005-02
影响因子：
6.4
通讯作者：
Yuyang Liu;Ruzhu Wang;Z. Xia
中科院分区：
文献类型：
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作者：
Yuyang Liu;Ruzhu Wang;Z. Xia
介绍了一种新研制的吸附式冷水机组，并进行了试验。在该吸附制冷循环系统中，没有制冷剂阀。因此，消除了当甲醇或水用作制冷剂时在常规系统中出现的传质阻力问题，该问题导致制冷剂在管道内流动期间的压降。为了使温度范围为70至95 °C的低热源的利用成为可能，选择硅胶-水作为工作对。实验结果表明，它是能够产生的冷却功率为6.3千瓦的COP约0.4。试验结果表明，通过热回收，COP可提高34.4%，而质量回收的效果是提高13.7%的冷却功率和18.3%的COP。分析了系统在不同冷凝温度和不同蒸发温度下的性能。在第一台样机的基础上，设计并制造了第二台样机，以提高其性能。初步测试结果表明，性能得到了很大的改善。它具有约0.5的COP和13 °C蒸发温度下9 kW的冷却功率。
A newly developed adsorption water chiller is described and tested. In this adsorption refrigeration cycle system, there is no refrigerant valve. Thus, the problem of mass transfer resistance occurring in the conventional systems when methanol or water is used as refrigerant and resulting in pressure drop during the flow of refrigerant inside the tubing is eliminated. To make the utilization of low heat source with temperature ranging from 70 to 95 °C possible, silica gel–water was selected as working pair. The experimental results proved that it is able to produce a cooling power of 6.3 kW with a COP of about 0.4. The test results demonstrate that, through the heat recovery, the COP can be increased by 34.4% while mass recovery has the effect of increasing the cooling power by 13.7% and the COP by 18.3%. The performances of the system were analyzed for varied condensation temperature and for varied evaporation temperature. Based on the first prototype, the second prototype is designed and manufactured to improve the performance. Primary test results demonstrate that the performance is highly improved. It has a COP of about 0.5 and cooling power 9 kW for 13 °C evaporation temperature.