ASHRAE FUNDAMENTALS SI CH 30-2017 Thermophysical Properties of Refrigerants.pdf
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1、30.1CHAPTER 30THERMOPHYSICAL PROPERTIES OF REFRIGERANTSHIS chapter presents data for thermodynamic and transportTproperties of refrigerants, arranged for the occasional user.The refrigerants have a thermodynamic property chart on pressure-enthalpy coordinates with an abbreviated set of tabular data
2、for sat-urated liquid and vapor on the facing page. In addition, tabular datain the superheated vapor region are given for R-134a to assist stu-dents working on compression cycle examples.For each cryogenic fluid, a second table of properties is pro-vided for vapor at a pressure of one standard atmo
3、sphere; these dataare needed when such gases are used in heat transfer or purge gasapplications. For zeotropic blends, including R-729 (air), tables areincremented in pressure, with properties given for liquid on thebubble line and vapor on the dew line. This arrangement is usedbecause pressure is m
4、ore commonly measured in the field whileservicing equipment; it also highlights the difference between bub-ble and dew-point temperatures (the “temperature glide” experi-enced with blends).Most CFC refrigerants have been deleted. Tables for R-11, R-13,R-113, R-114, R-141b, R-142b, R-500, R-502, R-50
5、3, and R-720(neon) may be found in the 1997 ASHRAE HandbookFundamen-tals. R-12 has been retained to assist in making comparisons. Hy-drogen and parahydrogen (R-702 and R-702p) may be found in the2009 ASHRAE HandbookFundamentals. A new table and diagramfor R-1233zd(E) have been added, and the data fo
6、r R-245fa andR-1234ze(E) have been revised. Viscosity data for R-1234yf havebeen revised. The formulations conform to international standards,where applicable: thermodynamic properties of R-12, R-22, R-32,R-123, R-125, R-134a, R-143a, R-152a, R-717 (ammonia), andR-744 (carbon dioxide) and refrigeran
7、t blends R-404A, R-407C,R-410A, and R-507 conform to ISO Standard 17584, RefrigerantProperties.Reference states used for most refrigerants correspond to the in-ternational convention of 200 kJ/kg for enthalpy and 1 kJ/(kgK) forentropy, both for saturated liquid at 0C. Exceptions are water andfluids
8、with very low critical temperatures (e.g., ethylene, cryogens).These data are intended to help engineers make preliminarycomparisons among unfamiliar fluids. For greater detail and a widerrange of data, see the sources in the References.Refrigerant Page Refrigerant PageHalocarbon Refrigerants Inorga
9、nic RefrigerantsMethane Series R-717 (ammonia) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-718 (water/steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-744 (carbon dioxide) . . . . . . . . . . . . . . . . . . . . . . . . . .Hydrocarbon RefrigerantsR-50 (methane) . . .
10、. . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-170 (ethane). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-290 (propane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-600 (n-butane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-600a (i
11、sobutane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-1150 (ethylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-1270 (propylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cryogenic FluidsR-704 (helium) . . . . . . . . . . . . . . . . . . . . . . . . .
12、 . . . . . . .R-728 (nitrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-729 (air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-732 (oxygen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .R-740 (argon) . . . . . . . . . . . . . . . . .
13、. . . . . . . . . . . . . . . .Absorption SolutionsAmmonia/Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Water/Lithium Bromide . . . . . . . . . . . . . . . . . . . . . . . . .30.4030.4230.4430.4630.4830.5030.5230.5430.5630.5830.6030.6230.6430.6630.6830.7030.72R-12 (dichlorodifl
14、uoromethane). . . . . . . . . . . . . . . . . . . 30.2R-22 (chlorodifluoromethane) . . . . . . . . . . . . . . . . . . . . 30.4R-23 (trifluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.6R-32 (difluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.8Ethane SeriesR-123
15、 (2,2-dichloro-1,1,1-trifluoroethane) . . . . . . . . . . 30.10R-124 (2-chloro-1,1,1,2-tetrafluoroethane) . . . . . . . . . . 30.12R-125 (pentafluoroethane) . . . . . . . . . . . . . . . . . . . . . . . 30.14R-134a (1,1,1,2-tetrafluoroethane) . . . . . . . . . . . . . . . . . 30.16R-143a (1,1,1-trif
16、luoroethane) . . . . . . . . . . . . . . . . . . . . 30.20R-152a (1,1-difluoroethane) . . . . . . . . . . . . . . . . . . . . . . 30.22Propane SeriesR-245fa (1,1,1,3,3-pentafluoropropane). . . . . . . . . . . . . 30.24Propylene SeriesR-1233zd(E) (trans-1-chloro-3,3,3-trifluoroprop-1-ene) 30.26R-1234
17、yf (2,3,3,3-tetrafluoroprop-1-ene) . . . . . . . . . . . 30.28R-1234ze(E) (trans-1,3,3,3-tetrafluoropropene). . . . . . . 30.30Zeotropic Blends (% by mass)R-404A R-125/143a/134a (44/52/4) . . . . . . . . . . . . . . 30.32R-407C R-32/125/134a (23/25/52) . . . . . . . . . . . . . . . 30.34R-410A R-32/
18、125 (50/50) . . . . . . . . . . . . . . . . . . . . . . 30.36Azeotropic BlendsR-507A R-125/143a (50/50) . . . . . . . . . . . . . . . . . . . . 30.38The preparation of this chapter is assigned to TC 3.1, Refrigerants and Secondary Coolants.30.2 2017 ASHRAE HandbookFundamentals (SI)Fig. 1Pressure-Ent
19、halpy Diagram for Refrigerant12PressureThermophysical Properties of Refrigerants 30.3Refrigerant 12 (Dichlorodifluoromethane) Properties of Saturated Liquid and Saturated VaporTemp.,*CPres-sure, MPaDensity,kg/m3LiquidVolume,m3/kgVaporEnthalpy,kJ/kgEntropy,kJ/(kgK)Specific Heat cp, kJ/(kgK)cp/cvVapor
20、Velocity of Sound, m/sViscosity,PasThermal Cond.,mW/(mK)Surface Tension,mN/mTemp.,* CLiquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor100 0.00119 1679.1 10.0040 113.32 306.09 0.6077 1.7210 0.819 0.449 1.182 1035 118.5 1005.0 6.78 116.7 4.27 26.48 10090 0.00286 1652.8 4.39
21、48 121.53 310.59 0.6538 1.6861 0.824 0.465 1.176 990 121.4 819.0 7.18 112.0 4.67 24.90 9080 0.00619 1626.3 2.1355 129.81 315.19 0.6978 1.6576 0.831 0.481 1.172 945 124.1 684.9 7.58 107.4 5.08 23.35 8070 0.01228 1599.5 1.1286 138.17 319.87 0.7400 1.6344 0.840 0.497 1.168 902 126.7 584.0 7.97 103.0 5.
22、50 21.81 7060 0.02261 1572.3 0.63992 146.62 324.61 0.7806 1.6156 0.850 0.513 1.166 859 129.1 505.1 8.37 98.8 5.93 20.30 6050 0.03911 1544.7 0.38494 155.18 329.39 0.8197 1.6004 0.861 0.530 1.165 816 131.2 441.8 8.76 94.7 6.38 18.81 5040 0.06409 1516.5 0.24342 163.86 334.18 0.8577 1.5882 0.873 0.548 1
23、.166 775 133.0 389.8 9.16 90.7 6.84 17.35 4030 0.10026 1487.7 0.16057 172.67 338.94 0.8946 1.5784 0.886 0.566 1.169 733 134.5 346.2 9.55 86.9 7.32 15.91 3029.75b0.10133 1487.0 0.15900 172.89 339.06 0.8955 1.5782 0.887 0.567 1.169 732 134.5 345.2 9.56 86.8 7.33 15.88 29.7528 0.10910 1481.9 0.14841 17
24、4.44 339.89 0.9019 1.5767 0.889 0.570 1.170 725 134.7 338.3 9.63 86.1 7.41 15.63 2826 0.11854 1476.0 0.13736 176.23 340.83 0.9091 1.5751 0.892 0.574 1.171 717 135.0 330.6 9.71 85.3 7.51 15.35 2624 0.12860 1470.1 0.12731 178.02 341.78 0.9163 1.5735 0.895 0.578 1.171 709 135.2 323.2 9.79 84.6 7.61 15.
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