回热器对跨临界CO2热泵系统性能的影响

金东旭; 王平; 小山繁; 高田信夫

doi:10.3969/j.issn.0258-2724.2012.04.016

回热器对跨临界CO2热泵系统性能的影响

doi: 10.3969/j.issn.0258-2724.2012.04.016

基金项目:

教育部留学回国人员科研启动基金资助项目(教外司留[2008]890号)

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出版历程
- 收稿日期: 2010-11-30
- 刊出日期: 2012-08-25

Effects of Internal Heat Exchanger on Performance of Transcritical CO2 Heat Pump System

摘要

摘要: 为了研究跨临界CO2热泵热水系统中,回热器传热面积对系统性能的影响,在不同的制冷剂充注量条件下实验研究了CO2热泵系统的性能. 实验中,通过调节变频压缩机频率与电子膨胀阀开启度,保持了一定的制热量与蒸发器出口过热度.实验结果表明:在最佳制冷剂充注量条件下,随着回热器传热面积的增加,压缩机的压缩比下降,排气温度与吸气温度上升.采用回热器可以提高系统的最大制热系数,当回热器的无量纲传热面积为0.2时,可使最大制热系数提高约3.2%~5.1%.
- CO2 /
- 热泵 /
- 回热器 /
- 性能
Abstract: The performance of a transcritical CO2 heat pump system applied for hot water supply was experimentally investigated under various refrigerant charging conditions to clarify the effects of the heat transfer area of an internal heat exchanger (IHX) on the system performance. Experiments were conducted in the condition of constant heating capacity and evaporator outlet superheat by adjusting the compressor frequency and the opening of electronic expansion valve. Experimental results show that, at the optimum refrigerant charge, the compression ratio decreases while the discharge and suction temperatures increase with an increase in the IHX heat transfer area. Adopting an IHX can increase the maximum heating COP (coefficient of performance), and an improvement of about 3.2%- 5.1% is obtained by using an IHX with a dimensionless heat transfer area of 0.2.
- CO2 /
- heat pump /
- internal heat exchanger /
- performance

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参考文献(16)

HWANG Y, RADERMACHER R. Experimental investigation of the CO2 refrigeration cycle[J]. ASHRAE Trans., 1999, 105(1): 1219-1227.

LORETZEN G, PETTERSON J. A new, efficient and environmentally benign system for car air-conditioning[J]. Int. J. Refrigeration, 1993, 16(1): 4-12.

谢英柏,孙刚磊,刘春涛,等. CO2跨临界双级压缩制冷循环的热力学分析[J]. 化工学报,2008,59(12): 2985-2989. XIE Yingbai, SUN Ganglei, LIU Chuntao, et al. Thermodynamic analysis of CO2 trans-critical two-stage compression refrigeration cycle[J]. Journal of Chemical Industry and Engineering: China, 2008, 59(12): 2985-2989.

杨俊兰,马一太,李敏霞,等. 带膨胀机CO2跨临界热泵系统的模拟计算与实验[J]. 天津大学学报,2007,40(9): 1099-1104. YANG Junlan, MA Yitai, LI Minxia, et al. Simulation and experimental study for transcritical CO2 heat pump system with expander[J]. Journal of Tianjin University, 2007, 40(9): 1099-1104.

DOMANSKI P, DIDION D, DOYLE J. Evaluation of suction-line/liquid-line heat exchange in the refrigeration cycle[J]. Int. J. Refrigeration, 1994, 17(7): 487-493.

KIM M H, PETTERSEN J, BULLARD C. Fundamental process and system design issues in CO2 vapor compression systems[J]. Prog. Energy Combust. Sci., 2004, 30(2): 119-174.

BULLOCK C E. Theoretical performance of carbon dioxide in subcritical and transcritical cycles//ASHRAE/NIST Conference Refrigerants for the 21st Century. Gaithersburg: , 1997: 20-26.

BOEWE D E, BULLARD C W, YIN J M, et al. Contribution of internal heat exchanger to transcritical R744 cycle performance[J]. Heating, Venrilation, Air Conditioning & Refrigereating Research, 2001, 7(2): 155-168.

APREA C, MAIORINO A. An experimental evaluation of the transcritical CO2 refrigerator performances using an internal heat exchanger[J]. Int. J. Refrigeration, 2008, 31(6): 1006-1011.

姜云涛,马一太,张子坤,等. 回热器对跨临界CO2水源热泵的影响判别式及实验研究[J]. 热科学与技术,2009,8(4): 307-311. JIANG Yuntao, MA Yitai, ZHANG Zikun, et al. Criterion of CO2 transcritical water source heat pump with IHX and experimental study[J]. Journal of Thermal Science and Technology, 2009, 8(4): 307-311.

ZHANG F Z, JIANG P X, LIN Y W, et al. Efficiencies of subcritical and transcritical CO2 inverse cycles with and without an internal heat exchanger[J]. Applied Thermal Engineering, 2011, 31(4): 432-438.

ROZHENTSEV A, WANG C C. Some design features of a CO2 air conditioner[J]. Applied Thermal Engineering, 2001, 21(8): 871-880.

KIM S G, KIM Y J, LEE G, et al. The performance of a transcritical CO2 cycle with an internal heat exchanger for hot water heating[J]. Int. J. Refrigeration, 2005, 28(7): 1064-1072.

CHEN Y, GU J. The optimum high pressure for CO2 transcritical refrigeration systems with internal heat exchangers[J]. Int. J. Refrigeration, 2005, 28(8): 1238-1249.

CHO H, RYU C, KIM Y. Cooling performance of a variable speed CO2 cycle with an electronic expansion valve and internal heat exchanger[J]. Int. J. Refrigeration, 2007, 30(4): 664-671.

金东旭,小山繁,薛隽,等. 跨临界CO2热泵热水器的性能 [J]. 西南交通大学学报,2010,45(5): 680-684. JIN Dongxu, KOYAMA Shigeru, XUE Jun, et al. Effects of refrigerant charge on performances of transcritical CO2 heat pump water heater[J]. Journal of Southwest Jiaotong University, 2010, 45(5): 680-684.

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文章访问数: 1211
HTML全文浏览量: 70
PDF下载量: 285
被引次数: 0

回热器对跨临界CO2热泵系统性能的影响

doi: 10.3969/j.issn.0258-2724.2012.04.016

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出版历程

Effects of Internal Heat Exchanger on Performance of Transcritical CO2 Heat Pump System

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出版历程

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