R1234ze/R32混合工质替代R410A热泵热水机组性能研究
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摘要
主要分析了2种配比的R1234ze/R32混合工质与R410A在不同工况条件下对空气源热泵热水器的运行性能研究;首先使用NIST软件进行了混合工质与纯工质的热力学性质及输运特性分析,表明混合工质的环评数据、热力学性能具有替代R410A工质的可行性,R1234ze中混入R32相比于纯R1234ze在循环性能上、导热性能有所提升。在此基础上搭建了热泵热水机组测试试验台。试验结果表明:在各对应工况下,混合工质的制热量均比R410A高且排气压力均比R410A低;随着测试环境温度的降低,虽然各工质的COP都呈现下降趋势,但混合工质机组的COP均高于R410A机组的COP且相差幅度增大。
In this paper the running performance of the air source heat pump water heater using two proportions of R1234 ze/R32 refrigerant mixture and using R410 A was mainly researched under different working conditions.First,the NIST software was used to analyze the thermodynamic properties and transport and storage characteristics of the refrigerant mixture and pure refrigerant. The results show that the environment assessment data and thermodynamic performance of the refrigerant mixture has the feasibility of replacing the R410 A refrigerant. When the R1234 ze was mixed with R32,both the cycle performance and the thermal conductivity were improved somewhat compared to the pure R1234 ze. On this basis,a test bench was built for the heat pump hot water chiller. The test results show that the heating capacity of the refrigerant mixture was all higher than that of R410 A and the discharge pressure was lower than that of R410 A under the corresponding working conditions.Although the COP value of the refrigerant decreased with the drop of the test ambient temperature,the COP values of the refrigerant mixture chiller were all higher than the COP value of R410 A chiller and the phase difference increased.
In this paper the running performance of the air source heat pump water heater using two proportions of R1234 ze/R32 refrigerant mixture and using R410 A was mainly researched under different working conditions.First,the NIST software was used to analyze the thermodynamic properties and transport and storage characteristics of the refrigerant mixture and pure refrigerant. The results show that the environment assessment data and thermodynamic performance of the refrigerant mixture has the feasibility of replacing the R410 A refrigerant. When the R1234 ze was mixed with R32,both the cycle performance and the thermal conductivity were improved somewhat compared to the pure R1234 ze. On this basis,a test bench was built for the heat pump hot water chiller. The test results show that the heating capacity of the refrigerant mixture was all higher than that of R410 A and the discharge pressure was lower than that of R410 A under the corresponding working conditions.Although the COP value of the refrigerant decreased with the drop of the test ambient temperature,the COP values of the refrigerant mixture chiller were all higher than the COP value of R410 A chiller and the phase difference increased.
引文
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[15]家用和类似用途热泵热水器:GB/T 23137-2008[S].北京:中国标准出版社,2008.
[2]张朝晖,陈敬良,高钰,等.制冷空调行业制冷剂替代进程解析[J].制冷与空调,2015,15(1):1-8.
[3]李连生.制冷剂替代研究进展及发展趋势[J].制冷学报,2011,32(6):54-57.
[4]曹霞.HFO-1234yf-新一代汽车空调制冷剂[J].制冷与空调,2008,8(6):55-61.
[5]Bansal P,Vineyard E,Abdelaziz O.Advances inhousehold appliances-a review[J].Applied Thermal Engineering,2011,31(17/18):3748-3760.
[6]张振亚,王芳,肖庭庭,等.替代工质R32和R290的对比研究[J].流体机械,2014,42(5):74-76.
[7]Wallington T J,Sulbaek Andersen M P,Nielsen O J.tmospheric chemistry of short-chain haloolefins:Photochemical ozone creation potentials(POCPs),global warming potentials(GWPs),and ozone deplection potentials(ODPs)main[J].Chemosphere,2014,129(6):135-141.
[8]王博,张伟.新型制冷剂HFO-1234ze[J].化工新型材料,2008,36(2):10-13.
[9]王定标,谷帆江,向飒,等.螺旋内肋扭曲管换热与流阻性能研究[J].压力容器,2008,33(2):25-29.
[10]陆怡,孙志冬,张琪.LNG车用气瓶颈管机构参数优化[J].压力容器,2016,33(7):32-41.
[11]秦蓓兰,刘道平,陈永军,等.基于爱因斯坦制冷循环的单压系统改进的研究[J].流体机械,2016,44(3):80-85.
[12]孙纬栋,张鹏,张昌.R1234yf/R134a二元混合工质的热物理性质[J].流体机械,2017,45(8):76-83.
[13]金实斌,曹璞钰,王洋.非均匀进流下喷水推进泵进流速度场的数值分析[J].排灌机械工程学报,2016,34(2):115-121.
[14]夏水晶,袁建平,孙潇,等.轴流泵叶片参数化造型及多参数优化[J].排灌机械工程学报,2016,34(7):597-601
[15]家用和类似用途热泵热水器:GB/T 23137-2008[S].北京:中国标准出版社,2008.