A novel CO2 refrigeration system achieved by CO2 solid-gas two-phase fluid and its basic study on system performance

A novel CO2 refrigeration system achieved by CO2 solid-gas two-phase fluid and its basic study on system performance
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CO2固气两相流体实现的新型CO2制冷系统及其系统性能基础研究

DOI:
10.1016/j.ijrefrig.2009.05.003
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发表时间:
2009-11
期刊:
International Journal of Refrigeration-revue Internationale Du Froid
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其他
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在本报告中,介绍了一种新型CO2制冷系统,该系统可以在CO2三相点-56.6 °C以下实现制冷能力。提出的CO2制冷系统由两个级联的热力学循环组成,其中一个是CO2跨临界循环,另一个是跨三相点循环。一个实验装置的构建和测试,以获得有关此CO2系统的基本知识。基于实测数据,得出结论:所建CO2制冷系统能够连续稳定运行,尽管CO2闭环回路中存在干冰颗粒。在本实验范围内,对于实验装置的低压系统,测得平均COP(冷却能量与压缩机功耗的比率)为2.45。此外,还研究了冷凝温度对制冷循环的影响,为今后的优化工作做了进一步的研究。
In this report, a new CO2refrigeration system is introduced, which can achieve a refrigeration capability below the CO2triple point of −56.6°C. The proposed CO2refrigeration system consists of two thermodynamic cycles arranged in cascade, where one is a CO2trans-critical cycle and another is a trans-triple-point cycle. An experimental set-up is constructed and tested in order to obtain a basic knowledge about this CO2system. Based on the measured data, it is concluded that the built CO2refrigeration system can operate continuously and stably, although dry ice particles exist in the closed CO2loops. An average COP (a ratio of cooling energy to the compressor power consumption) is measured at 2.45 in the present experiment range for the low-pressure system of the experimental set-up. In addition, the influence of the condensation temperature on the refrigeration cycle is investigated and more studies are needed for the future optimization work.
DOI: 10.1016/j.ijrefrig.2008.07.008
发表时间: 2009
期刊: International Journal of Refrigeration-revue Internationale Du Froid
影响因子: --
作者:
Honghyun Cho;Changhyun Baek;Chasik Park;Yongchan Kim
通讯作者: Honghyun Cho;Changhyun Baek;Chasik Park;Yongchan Kim
DOI: 10.1016/0140-7007(94)90059-0
发表时间: 1994-06-01
期刊: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
影响因子: --
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期刊: International Journal of Refrigeration-revue Internationale Du Froid
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期刊: International Journal of Refrigeration-revue Internationale Du Froid
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DOI: 10.1016/j.ijrefrig.2005.08.014
发表时间: 2005-12
期刊: International Journal of Refrigeration-revue Internationale Du Froid
影响因子: --
作者:
R. Rieberer
通讯作者: R. Rieberer