补气压力损失系数与一级压比对补气增焓空气源热泵性能影响

doi:10.16085/j.issn.1000-6613.2017-0463

化工进展 ›› 2017, Vol. 36 ›› Issue (S1): 115-120.DOI: 10.16085/j.issn.1000-6613.2017-0463

补气压力损失系数与一级压比对补气增焓空气源热泵性能影响

胡文举, 常默宁, 刘琴, 高岩, 李德英

北京建筑大学环境与能源工程学院, 供热、供燃气、通风及空调工程北京市重点实验室, 北京 100044

收稿日期:2017-03-21 修回日期:2017-04-26 出版日期:2017-12-31 发布日期:2017-12-13
通讯作者: 胡文举(1981-),男,博士,副教授,研究方向为热泵技术、相变蓄能。
作者简介:胡文举(1981-),男,博士,副教授,研究方向为热泵技术、相变蓄能。E-mail:huwenju@bucea.edu.cn。
基金资助:
国家重点自然科学基金（51338006）及国家自然科学基金青年项目（51508016）。

Effects of first stage compression ratio and pressure loss coefficient on the performance of enhanced vapor injection air source heat pump

HU Wenju, CHANG Moning, LIU Qin, GAO Yan, LI Deying

Beijing Key Lab of HVAC, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

Received:2017-03-21 Revised:2017-04-26 Online:2017-12-31 Published:2017-12-13

摘要/Abstract

摘要： 空气源热泵系统低温适用性问题一直是其在北方拓广应用的制约性因素，带有闪发器的补气增焓空气源热泵系统是解决空气源热泵低温适用性的有效手段之一。本文建立了带有闪发器的补气增焓空气源热泵系统的热力学过程数学模型，通过数值模拟研究了一级压缩比和压力损失系数对补气增焓空气源热泵系统特性的影响。结果表明，随着一级压比的逐渐增大，冷凝压力降低趋势平缓，热泵的性能系数逐渐升高，而排气温度先降低后升高，因而存在最佳一级压比。综合压缩机的排气温度和热泵的性能系数，模拟工况补气增焓空气源热泵的最佳一级压比为1.6。补气压力损失系数越大意味着有用功的损失越小，随着补气压力损失系数增大热泵的制热量、耗功逐渐增大，性能系数逐渐升高而排气温度逐渐降低，因此设计时应补气压力损失系数越大越好。

关键词: 热力学过程, 补气增焓空气源热泵, 补气压力损失系数, 一级压比

Abstract: The adaptability of air source heat pump to low ambient temperature environment restricted its wide application in north of China.Enhanced vapor injection air source heat pump(ASHP)system with flash-tank as economizer was one of the most efficient method to solve the problem of low temperature adaptability for air source heat pump.By developed mathematical model of the enhanced vapor injection air source heat pump,influce on the heat pump's performance by first stage compression ratio and pressure loss coefficient were studied.The results show that optimum first stage compression ratio exits.Because with the gradual increase of the first stage pressure ratio,the condensation pressure decreases slowly and the heat pump's coefficient of performance(COP)increases gradually,while the compressor's exhaust temperature decreases first and then increases.Based on an overall consideration of discharge temperature of compressor and ASHP COP,first stage compression ratio was 1.6 in simulated condition.Large pressure loss coefficient means little useful work loss,and larger pressure loss coefficient leads to larger heating capacity,power input,ASHP COP and lower discharge temperature.Therefore,lower pressure loss coefficient should be an important aim in practical design.

Key words: thermodynamics process, enhanced vapor injection air source heat pump, pressure loss coefficient, first stage pressure ratio

中图分类号:

TU831.6

胡文举, 常默宁, 刘琴, 高岩, 李德英. 补气压力损失系数与一级压比对补气增焓空气源热泵性能影响[J]. 化工进展, 2017, 36(S1): 115-120.

HU Wenju, CHANG Moning, LIU Qin, GAO Yan, LI Deying. Effects of first stage compression ratio and pressure loss coefficient on the performance of enhanced vapor injection air source heat pump[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 115-120.

参考文献

[1] 柴沁虎,马国远.空气源热泵低温适应性研究的现状及进展[J].能源工程,2002(5):26-32. CHAI Q H,MA G Y.State of knowledge and current challenges in the ASHP developed for the cold areas[J].Energy Engineering,2002(5):26-32.
[2] NOBUKATSU Arai.Scroll compressor and its application to packaged air-conditioner[J].日立评论,1983,65(6):31-42.
[3] 马国远,邵双全.寒冷地区空调用热泵的研究[J].太阳能学报,2002,23(1):17-21. MA G Y,SHAO S Q.Research on heat pump cycle for air conditioning in cold regions[J].Acta Energiae Solaris Sinica,2002,23(1):17-21.
[4] 马国远,彦启森.涡旋压缩机经济器系统的性能分析[J].制冷学报,2003,24(3):20-24. MA G Y,YAN Q S.Thermodynamic bebavior of scroll compressor with economizer for heat pump[J].Journal of Refrigeration,2003,24(3):20-24.
[5] 柴沁虎,马国远,江亿,等.带经济器的涡旋压缩机制冷循环热力学分析[J].清华大学学报,2003,43(10):1401-1404. CHAI Q H,MA G Y,JIANG Y,et al.Thermodynamic analyses of scroll refrigeration system with economizer[J].Journal of Tsinghua University(Science and Technology),2003,43(10):1401-1404.
[6] 赵会霞.涡旋压缩机闪发器热泵系统的理论分析与实验研究[D].北京:北京工业大学,2005. ZHAO H X.Theoretical analysis and experimental study on heat pump system with flash-tank coupled with scroll compressor[D].Beijing:Beijing University of Technology,2005.
[7] 陈镇凯,胡文举,江辉民,等.带有闪发器的空气源热泵系统数学模型的研究[J].流体机械,2011,39(11):81-87. CHEN Z K,HU W J,JIANG H M,NI L.Study on the mathematical model of air source heat pump system with flash-tank as economizer[J].Fluid Machinery,2011,39(11):81-87.
[8] 胡文举,王梦圆,江辉民,等.闪发蒸汽冷却技术及R134a用于高温空调器的研究[J].流体机械,2015,43(10):73-78. HU W J,WANG M Y,JIANG H M,et al.Study on the high temperature air-onditioner based on flash evaporative cooling technology and using R134a as refrigerant[J].Fluid Machinery,2015,43(10):73-78.

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补气压力损失系数与一级压比对补气增焓空气源热泵性能影响

Effects of first stage compression ratio and pressure loss coefficient on the performance of enhanced vapor injection air source heat pump

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