Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression
Bin HU, Di WU, L.W. WANG, R.Z. WANG
Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression
In this paper, the simulation approach and exergy analysis ofmulti-stage compression high temperature heat pump (HTHP) systemswith R1234ze(Z) working fluid are conducted. Both the single-stageand multi-stage compression cycles are analyzed to compare the systemperformance with 120°C pressurized hot water supply based uponwaste heat recovery. The exergy destruction ratios of each componentfor different stage compression systems are compared. The resultsshow that the exergy loss ratios of the compressor are bigger thanthat of the evaporator and the condenser for the single-stage compressionsystem. The multi-stage compression system has better energy and exergyefficiencies with the increase of compression stage number. Comparedwith the single-stage compression system, the coefficient of performance(COP) improvements of the two-stage and three-stage compression systemare 9.1% and 14.6%, respectively. When the waste heat source temperatureis 60°C, the exergy efficiencies increase about 6.9% and 11.8%for the two-stage and three-stage compression system respectively.
multi-stage compression / hightemperature heat pump / heat recovery / exergy destruction / R1234ze(Z) workingfluid
[1] |
Nishimura T. “Heat pumps—status and trends” in Asiaand the Pacific. International Journal of Refrigeration, 2002, 25(4): 405–413
|
[2] |
He Y N, Cao F, Jin L, Xing Z W. Development and field test of a high-temperature heat pump used incrude oil heating. Proceedings of the Institutionof Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2017, 231(3): 392–404
|
[3] |
Wu X K, Xing Z W, He Z L, Wang X, Chen W . Performance evaluation ofa capacity-regulated high temperature heat pump for waste heat recoveryin dyeing industry. Applied Thermal Engineering, 2016, 93: 1193–1201
|
[4] |
Watanabe C. Pioneering industrial heat pump technology in Japan. In: 3rd Conference of AHPNW,HUST, Hanoi, Vietnam, 2013
|
[5] |
Li T X, Guo K H, Wang R Z. High temperature hot water heat pumpwith non-azeotropic refrigerant mixture HCFC-22/HCFC-141b. Energy Conversion & Management, 2002, 43(15): 2033–2040
|
[6] |
Liu N X, Shi L, Han L Z, Zhu M. Moderately high temperature water source heat pumps using a nearazeotropic refrigerant mixture. AppliedEnergy, 2005, 80(4): 435–447
|
[7] |
Brown S J, Zilio C, Gavallini A. The fluorinated olefin R-1234ze(Z) asa high temperature heat pumping refrigerant. InternationalJournal of Refrigeration, 2009, 32(6): 1412–1422
|
[8] |
Wang K, Cao F, Wang S G, Xing X. Investigation of the performance of a high temperature heat pumpusing parallel cycles with serial heating on the water side. International Journal of Refrigeration, 2010, 33(6): 1142–1151
|
[9] |
Pan L, Wang H, Chen Q C, Chen C. Theoretical and experimental study on several refrigerants of moderatelyhigh temperature heat pump. Applied Thermal Engineering, 2011, 31(11–12): 1886–1893
|
[10] |
Chamoun M, Rulliere R, Haberschill P , BerailJ F. Dynamic model of an industrial heat pump using wateras refrigerant. International Journal of Refrigeration, 2012, 35(4): 1080–1091
|
[11] |
Redón A, Navarro-Peris E, Pitarch M , Gonzálvez-Macia J , Corberán J M. Analysis and optimization of subcriticaltwo-stage vapor injection heat pump systems. Applied Energy, 2014, 124(7): 231–240
|
[12] |
Kondou C, Koyama S. Thermodynamicassessment of high-temperature heat pumps using Low-GWP HFO refrigerantsfor heat recovery. International Journalof Refrigeration, 2015, 53: 126–141
|
[13] |
Lee H, Hwang Y, Radermacher R , Chun H H. Performance investigation of multi-stage saturation cyclewith natural working fluids and low GWP working fluids. International Journal of Refrigeration, 2015, 51: 103–111
|
[14] |
Arpagaus C, Bless F, Schiffmann J , Bertsch S S. Multi-temperature heat pumps: a literature review. International Journal of Refrigeration, 2016, 69: 437–465
|
[15] |
Hu B, Li Y, Cao F, Xing Z. Extremum seeking control of COP optimization for air-source transcriticalCO2 heat pump water heater system. Applied Energy, 2015, 147: 361–372
|
[16] |
Arora A, Kaushik S C. Theoretical analysis of a vapor compression refrigeration systemwith R502, R404A and R507A. International Journal of Refrigeration, 2008, 31(6): 998–1005
|
[17] |
Bayrakci H C, Ozgur A E. Energy andexergy analysis of vapor compression refrigeration systems using purehydrocarbon refrigerants. International Journal of EnergyResearch, 2009, 33(12): 1070–1075
|
[18] |
Ahamed J U, Saidur R, Masjuki H H. A review on exergy analysis of vaporcompression refrigeration system. Renewable & SustainableEnergy Reviews, 2011, 15(3): 1593–1600
|
[19] |
Fukuda S, Kondou C, Takata N, Koyama S. Low GWP refrigerants R1234ze(E)and R1234ze(Z) for high temperature heat pumps. InternationalJournal of Refrigeration, 2014, 40(3): 161–173
|
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