三种跨临界CO<sub>2</sub>制冷循环的性能对比研究

龚毅; 彭锦晨; 吴学红; 张文慧

doi:10.3969/j.issn.2095-476X.2015.3/4.022

CN 41-1437/TS ISSN 2096-1553

三种跨临界CO₂制冷循环的性能对比研究

龚毅 , 彭锦晨 , 吴学红 , 张文慧

龚毅, 彭锦晨, 吴学红, 等. 三种跨临界CO2制冷循环的性能对比研究[J]. 轻工学报, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

引用本文: 龚毅, 彭锦晨, 吴学红, 等. 三种跨临界CO2制冷循环的性能对比研究[J]. 轻工学报, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

GONG Yi, PENG Jin-chen, WU Xue-hong and et al. Numerical study for three kinds of transcritical CO2 refrigeration cycle[J]. Journal of Light Industry, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

Citation: GONG Yi, PENG Jin-chen, WU Xue-hong and et al. Numerical study for three kinds of transcritical CO2 refrigeration cycle[J]. Journal of Light Industry, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

三种跨临界CO₂制冷循环的性能对比研究

郑州轻工业学院机电工程学院, 河南郑州 450002
基金项目: 郑州市领军人才项目(131PLJRC640)
河南省骨干教师项目(2012GGJS-115)
国家自然科学基金项目(51476148)
中图分类号: TB61

Numerical study for three kinds of transcritical CO₂ refrigeration cycle

College of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Received Date: 2014-06-21
Available Online: 2015-09-15
CLC number: TB61

摘要: 对跨临界CO₂节流阀循环、跨临界CO₂回热器循环、跨临界CO₂膨胀机循环三种跨临界CO₂制冷循环进行了理论分析和模拟计算,研究了三种循环的性能差异.结果表明,相同条件时,回热器循环的制冷量最大,膨胀机循环次之,节流阀循环最小;回热器循环的功耗最大,节流阀循环次之,膨胀机循环最小;膨胀机循环的COP最大,回热器循环次之,节流阀循环最小;回热器循环的压缩机排气温度高于节流阀循环和膨胀机循环.综上可得,节流阀循环的COP最小,回热器循环能够提高系统的制冷量,但是会导致压缩机排气温度的升高,膨胀机循环能够有效地减少系统功耗,对系统COP的提升更为显著,综合性能更好.
- 跨临界CO₂制冷循环 /
- 能效比 /
- 膨胀机循环 /
- 回热器循环 /
- 节流阀循环
Abstract: The performance difference of trans-critical CO₂ throttle valve cycle, trans-critical CO₂ internal heat exchanger cycle and trans-critical CO₂ expander cycle was investigated by theoretical analysis and numerical simulation. The results showed that:under the same conditions, the cooling capacity of internal heat exchanger cycle was the biggest and throttle valve cycle was the smallest; the power dissipation of internal heat exchanger cycle was the biggest and the expander cycle was smallest; the COP of expander cycle was the biggest and throttle valve cycle was the smallest; the compressor discharge temperature of internal heat exchanger cycle was higher than throttle valve cycle and expander cycle.To sum up,the COP of throttle valve cycle was the smallest. Internal heat exchanger cycle could improve the system cooling capacity, but it also increased the compressor discharge temperature. Expander cycle could reduce system power dissipation effectively, and could more significantly improve system COP, it had the better performance.
- transcritical CO₂ refrigeration cycle /
- COP /
- expander cycle /
- internal heat exchanger cycle /
- throttle cycle
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龚毅, 彭锦晨, 吴学红, 等. 三种跨临界CO2制冷循环的性能对比研究[J]. 轻工学报, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

引用本文: 龚毅, 彭锦晨, 吴学红, 等. 三种跨临界CO2制冷循环的性能对比研究[J]. 轻工学报, 2015, 30(3-4): 98-102. doi: 10.3969/j.issn.2095-476X.2015.3/4.022

三种跨临界CO₂制冷循环的性能对比研究

郑州轻工业学院机电工程学院, 河南郑州 450002

收稿日期: 2014-06-21
网络出版日期: 2015-09-15

基金项目: 郑州市领军人才项目(131PLJRC640)河南省骨干教师项目(2012GGJS-115)国家自然科学基金项目(51476148)

关键词:

摘要: 对跨临界CO₂节流阀循环、跨临界CO₂回热器循环、跨临界CO₂膨胀机循环三种跨临界CO₂制冷循环进行了理论分析和模拟计算,研究了三种循环的性能差异.结果表明,相同条件时,回热器循环的制冷量最大,膨胀机循环次之,节流阀循环最小;回热器循环的功耗最大,节流阀循环次之,膨胀机循环最小;膨胀机循环的COP最大,回热器循环次之,节流阀循环最小;回热器循环的压缩机排气温度高于节流阀循环和膨胀机循环.综上可得,节流阀循环的COP最小,回热器循环能够提高系统的制冷量,但是会导致压缩机排气温度的升高,膨胀机循环能够有效地减少系统功耗,对系统COP的提升更为显著,综合性能更好.