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为研究冷冻水流量与温度变化对基于大滑移温度非共沸工质双温冷水机组性能的影响规律,本文在大滑移温度非共沸工质的双温冷水机组实验台进行了多组实验研究。实验分别研究了非共沸工质R32/R236fa在不同质量组分比例(0.4∶0.6,0.5∶0.5,0.6∶0.4)下,冷冻水流量由0.25 m~3/h增大到0.45 m~3/h,以及高温冷冻水温度变化时,冷水机组性能的变化情况。实验结果表明,在冷却水进出口温度为32℃与37℃,高、低温冷冻水温度分别为7℃,16℃时,不同冷冻水流量下冷水机组的制冷效率(COP)最大为4.17,最小COP为3.27。此外,高温冷冻水温度变化对冷水机组COP存在明显影响。实验为大滑移温度的双温冷水机组的应用提出了数据基础。
In order to study the influence of chilled water flow rate and temperature on the performance of double-temperature chiller unit based on large-slip temperature and non-azeotropic working medium, Experimental Study. In the experiments, the flow rate of chilled water was increased from 0.25 m ~ 3 / h to 0.45 m ~ 3 at different mass ratios (0.4: 0.6, 0.5: 0.5, 0.6: 0.4) / h, and chilled water temperature changes, chiller performance changes. The experimental results show that the maximum COP of the chiller is 4.17 at the different chilled water flow rates when the cooling water inlet and outlet temperature is 32 ℃ and 37 ℃, the high and low temperature chilled water temperature are respectively 7 ℃ and 16 ℃, The COP is 3.27. In addition, the temperature of high temperature chilled water has a significant impact on the chiller COP. The experiment put forward the data foundation for the application of the dual temperature water chiller with large sliding temperature.