Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers

Li Xiongya; Hua Xue; Guo Xiaolin

doi:10.12465/j.issn.0253-4339.2024.06.083

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Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers

更新时间：2024-12-13

- Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers
- Journal of Refrigeration Vol. 45, Issue 6, Pages: 83-90(2024)
- 作者机构：
  
  生态环境部对外合作与交流中心　北京　 100035
- 作者简介：
  
  Hua Xue, female, senior engineer, Foreign Environmental Cooperation Center of the Ministry of Ecology and Environment, 86-10-82268856, E-mail：hua.xue@fecomee.org.cn. Research fields: implementation of the Montreal Protocol on substances that seplete the ozone layer in China in the refrigeration sector.
- 基金信息：
- DOI：10.12465/j.issn.0253-4339.2024.06.083
  CLC： TB61⁺1;TB61⁺2
- Published：16 December 2024，
  
  Received：29 August 2023，
  
  Revised：02 November 2023，
  
  Accepted：2023-11-29
- 稿件说明：
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LI XIONGYA, HUA XUE, GUO XIAOLIN. Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers. [J]. Journal of refrigeration, 2024, 45(6): 83-90.
DOI：

LI XIONGYA, HUA XUE, GUO XIAOLIN. Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers. [J]. Journal of refrigeration, 2024, 45(6): 83-90. DOI： 10.12465/j.issn.0253-4339.2024.06.083.

摘要

R516A是水冷冷水机组领域R134a制冷剂的新型替代品之一，通过单级压缩热力学循环对比分析了R516A与R134a的COP、排气温度等参数，在分别充注R134a和R516A的小型水冷冷水机组上开展了名义工况和变工况下的性能对比实验，研究了水冷冷水机组使用R516A替代R134a的成本变化。结果表明：R516A理论循环的COP比R134a低1.5%，排气温度比R134a低4.9~6.0 ℃；在名义工况下，R516A机组性能较R134a机组有一定的差距，COP相差4.9%~7.2%；在变工况下，R516A机组性能与R134a机组基本相当，COP差距缩小至0.5%~2.3%；因R516A具有弱可燃性，R516A机组成本比R134a机组增加10%~15%。

Abstract

R516A is one of the new substitutes for R134a refrigerant in water-cooled chillers. The COP (coefficient of performance) and discharge temperatures of R516A and R134a are compared through a single-stage vapor compression cycle. Under nominal and variable operating conditions

the performances of a small water-cooled chiller charged with R134a and R516A are tested and compared. The cost changes of replacing R134a with R516A in the water-cooled chiller are discussed. The conclusions indicate that

in the theoretical cycle

the COP of R516A is 1.5% lower than that of R134a

and the discharge temperature is 4.9-6.0 ℃ lower than that of R134a. Under nominal operating conditions

there is a certain performance gap between the R516A chiller and the R134a chiller

with a COP difference of 4.9%-7.2%. Under variable operating conditions

the performance of the R516A chiller is basically equivalent to that of the R134a chiller

and the COP gap is reduced to 0.5%-2.3%. Owing to the mild flammability of R516A

the cost of the R516A chiller is 10%-15% higher than that of the R134a chiller.

关键词

性能对比R516A水冷冷水机组制冷剂替代

Keywords

performance comparisonR516Awater-cooled chillerrefrigerant replacement

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