Document dQOXOaRp3q2ZXjvkaLmE10Xq

35 9 2016 9 :1003-0344( 2016)09-034-5 Building Energy & Environment Vol.35 No.9 Sep.2016.34 -38 R32/R1233zd(E) l 2 2 l I 1 2 R1233zd(ER32 R1233zd(E) R22R32/R1233zd(E TO cot),R22 /Nlet90/10 46/54 ,R32/R1233zd (E)90/100 COPh )9 4.793 R22R32 COPh 10.2%- 6.6%O R32/R1233zd(E0 R32/R1233zd(E Thermodynamic Analysis of Heat Pump System Using R32/R1233zd(E) Mixtures as Refrigerant FAN Xiao-wei',GUO Zhuang-re,LI Hong-xin2,ZHAO Cheng-mingl,FU Yi-ke' 1 School ofEnergy and Environment,Zhongyuan University ofTechnology 2 School of Civil Engineering,Zhengzhou University Abstract: R1233zd (E)is an environmentally friendly,non-toxic,non-flammable refrigerant.Binary mixtures ofR32 and R1233zd(E)are proposed to replace the traditional R22 in the heat pump water heater system.In the normal condition of heat pump water heater, the thermodynamic performance of the system using various mass fraction of the mixture is theoretically analyzed and compared with conventional refrigerant R22 based on heat transfer pinch point in heat exchangers. Under the same operating conditions, results show that the COPh for mixed refrigerant is greater than R22 system in the calculation range,which have two peaks,the mass ratio are 90/10 and 46/54,and the optimal mass fraction ofR32/R1233zd(E)is 90/10.With the optimum mass fraction,the optimal COPh of mixture is 4.793,increased by 10.2% compared to that of R22 system, by 6.6% compared to that of R32 system. The new mixture of R32/R1233zd (E) is promising to be new alternative refrigerant in heat pump system. Keywords:zeotropic mixture,heat pump water heater,R32/R1233zd(E),heat transfer pinch point I] R22 HFCs,HFO R134a R410AR407C GWP - O ODP GWP 0 AHRI) GWP (Low-GWP AREP[41'L-20 2015-09-30 1966.-) 41 450007) 0371-62506158 E-mail:----zut.edu.en No.51176207) (C)1994-2023 China Academic Journal Electronic Publishing House.All rights reserved. http://www.cnki.net  35 9 R 32/R 1233zd(E) 35 R32/R152a/R1234ze (E)45/20/35ARM-32a R32/ R125/R134a/R1234yf25/30/25/20DR-7R32/R1234yf 36/64"Koolman" R22 Subiantoro [5] R22 R407CR134aR437AR1234yf R290 R290 R744 HCs [6-7] R32 ODP R32 R32 [8] R32 GWP R1233zd(E) R32 R1233zd(E) R1233zd(E) R32 R32/R1233zd(E) 2 R32/R1233zd(E) 2.1 0.1~2.5 MPa [12] R32 0.11.02.0 3.0 MPa R32 NIST Refprop9.1[9] 1 R1233zd (E) R32 R1233zd(E) 0.1 MPa 47.9 R1233zd(E) 70%~90% 1 R1233zd(E) R1233zd(E) (trans-1-chloro-3,3,3-trifluoro-1propene) HFO ASHRAE A1GWP1 R123 GWP 77 ATL 26 30 [10] R123 [11] 1[9] R32R1233zd(E) R22 R32 R1233zd(E) R22 / 1 R1233zd(E) /// R1233zd(E) R32 R22 // /K 291.47 221.50 232.34 //// /g/mol 130.50 52.02 86.47 //// /K 438.75 351.10 369.30 //// /MPa 3.624 5.782 4.990 ASHRAE ODP GWP // 0 1 A1 0 675 A2L 0.04 1810 A1 1 2.2 R1233zd(E) 2 R1233zd(E) -5 0 5 10 R1233zd(E) 60%~100%68% ~100%78%~100% 87%~100% 0.1 MPa R1233zd(E) 0~60% 36 2016 2 R1233zd(E) 3 R32/R1233zd(E) 6 [14] t min (t t ) t t h h (t t) (t t )6 h h [14] t pe min (tc t1)(td t4 ) 7 t tv abc d 3.1 3 R32/R1233zd(E) [13] 3.2 [15] 15 55 20 15 EES [16] 3.1 NIST REFPROP 9.1[917] 4 3 R22 R32 2 COPh COP q w h h h h 1 qh q =h h 2 qhv q = h h v w 3 w=h2 h1 4 r r = P P 5 h kJ/kgP MPav m3/kg 123 4 3 c e 2 R22 R32 COP/(-) W/kJ/kg q/kJ/kg q/kJ/m P/MPa r/(-) T/ R22 4.351 41.59 180.9 5061 2.127 3.219 85.83 R32 4.498 62.11 279.3 8190 3.201 2.978 94.11 4.1 4 R1233zd(E) 3.2 MPa 1.03 MPa R32 3.2 MPa R1233zd(E) 25%~60% R22 2.127 MPa 20% ~60% 2.5 MPa r R1233zd(E)  35 9 R 32/R 1233zd(E) R1233zd (E) 0~20% R22 3.219 37 6 4 4.2 5 R1233zd(E) 279.3 kJ/kg 234.4 kJ/kg R22 180.9 kJ/kg R1233zd(E)R32/R1233zd(E) 8190 kJ/m3 2345 kJ/m3 R1233zd (E) R1233zd(E)0~32% R22 5061 kJ/m3 7 COPh R1233zd(E)COPh 4.793 4.595 R32/R1233zd(E) 90/1046/54 R1233zd (E) 0~60% COPh R22 4.351 0~30% 45%~58% R32 4.498 7 COPh 5 5 4.3 COPh 6 R1233zd(E) 102.3 R32/R1233zd(E) 46/54 96.6 R1233zd(E) 0~25% 50%~60% 100 R32/R1233zd(E) 1 R1233zd(E) 70% ~90% -5 R1233zd(E) 60%~100% 0.1 MPa 2 R1233zd(E) 0~25%25%~60% R22 R1233zd (E) 0~32% R22 R22 38 2016 3 R1233zd(E) 0~60% COPh R22 R32/R1233zd(E) 46/5490/10 COPh 4.5954.793 4 90/10 COPh 4.793 R22R32 COPh 10.2%6.6% 2.82 MPa R32 12.5% 257.9 kJ/kg R22 42.6% 2.87 R22 10.9% 93.9 [1] Blarke M B, Lund H. Large-scale heat pumps in sustainable energy System and project perspectives[J]. Thermal Science, 2007, 11 (3): 143-152 [2] United Nations(UN). Montreal Protocol on Substances that Deplete the Ozone Layer [R]. New York, USA: United Nations (UN), 1987 [3] UNEP. Decisions of the 19th Meeting of the Parties to the Montreal Protocol[R]. 2007. [4] Interim Report: AHRI Low-GWP Alternative Refrigerants Evaluation Program[R]. 2012. [5] A Subiantoro, K T Ooi, A Z Junaidi. Performance and suitability comparisons of some R22 possible substitute refrigerants[C]//8th International Conference on Compressors and their Systems, 2013. 67-76 [6] , , , . R744/HCs [J]. , 2012,11(4): 363-368. [7] , , , . / [J]. , 2014, 13(4): 295-299. [8] , . / R32 R22 [J]. , 2009, 9(6): 31-34. [9] PEFPROP. NIST Standard Reference Database 23 (Version 9.1) [Z]. 2015. [10] Federal Register. Protection of Stratospheric Ozone: Determination 29 for Significant New Alternatives Policy program[R]. Rules and Regulations, 2014,79(203): 62863-62875 [11] Joseph Lynch. A High Performing Low Global Warming Potential Blowing Agent For Spray PU Foam[R]. California: Arkema Inc, 2014. [12] Palm B. Hydrocarbons as refrigerants in small heat pump and refr -igeration systems-A review[J]. International Journal of Refrigera -tion, 2008, 31(4): 552-563. [13] . / [D]. : , 2013. [14] J Sarkar, S Bhattacharyya. Assessment of blends of CO2 with buta -ne and isobutane as working fluids for heat pump applications. Int. J. of Therm. Sci., 2009, 48(7): 1460-1465. [15] . (GB/T23137)[S]. : , 2008. [16] Engineering Equation Solver, Academic Commercial (Ver9.908) [Z]. 2015. [17] EES_REFPORP Inerface[CP]. NIST, 2012. 4 3 2 h "" 45 50 1 h 2 h 5:00-7:00 1 /h 7:00-8:00 2 /h 8:00 0.5 /h 35-50 110-210 W/m2 35 50 1.75 5 30 W/m2 35 [1] Khorasanizadeh H, Sheikhzadeh G A, Azemati A A, et al. Numeri -cal study of air flow and heat transfer in a two-dimensional encl -osure with floor heating[J]. Energy and Buildings, 2014, 78: 98104. [2] Rahimi M, Sabernaeemi A. Experimental study of radiation and free convection in an enclosure with under-floor heating system [J]. Energy Conversion and Management,2011, 52(7):2752-2757.