Effect of Variable Chilled Water Flow Rates and Temperature on Performance of Double Temperature Chiller with Large Temperature Glide Zeotropic Refrigerant

Liu Jian; Zhang Xiaosong

doi:10.3969/j.issn.0253-4339.2015.06.083

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Effect of Variable Chilled Water Flow Rates and Temperature on Performance of Double Temperature Chiller with Large Temperature Glide Zeotropic Refrigerant

更新时间：2024-07-18

- Effect of Variable Chilled Water Flow Rates and Temperature on Performance of Double Temperature Chiller with Large Temperature Glide Zeotropic Refrigerant
- Journal of Refrigeration Vol. 36, Issue 6, (2015)
- 作者机构：
  
  东南大学能源与环境学院
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2015.06.083
  CLC：
- Published：2015
- 稿件说明：
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Liu Jian, Zhang Xiaosong. Effect of Variable Chilled Water Flow Rates and Temperature on Performance of Double Temperature Chiller with Large Temperature Glide Zeotropic Refrigerant[J]. Journal of refrigeration, 2015, 36(6).
DOI：

Liu Jian, Zhang Xiaosong. Effect of Variable Chilled Water Flow Rates and Temperature on Performance of Double Temperature Chiller with Large Temperature Glide Zeotropic Refrigerant[J]. Journal of refrigeration, 2015, 36(6). DOI： 10.3969/j.issn.0253-4339.2015.06.083.

摘要

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 m3/h增大到0.45 m3/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。

Abstract

To study the effect of variable chilled water flow rates and temperature on double temperature chiller with large temperature glide zeotropic refrigerant

the chiller’s performance under different conditions was investigated experimentally

including mass concentration ratio of R32/R236fa (0.4~0.6

0.5~0.5

0.6~0.4)

chilled water flow rates change from 0.25 m3/h to 0.45 m3/h and temperature change of the high temperature chilling water. The experimental results show that the maximum and minimum COP of the unit under different flow rates is 4.17 and 3.27 respectively

this moment

the inlet and outlet water temperature of condenser are 32 ℃ and 37℃

the high-low temperature chilling water are 7 ℃ and 16 ℃. In addition

the temperature change of high temperature chilled water have obvious effect on the performance of the unit. At last

the results of this paper provide database for the application of double temperature chiller.

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