ASHRAE FUNDAMENTALS IP CH 30-2013 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 (R0702 and R-702p) have been deletedfrom this edition; these may be found in the 2009 ASHRAE Hand-bookFundamentals. New tables and diagrams for
6、 R-1234yf andR-1234ze(E) have been added. The formulations conform to inter-national standards, where applicable: thermodynamic properties ofR-12, R-22, R-32, R-123, R-125, R-134a, R-143a, R-152a, R-717(ammonia), and R-744 (carbon dioxide) and refrigerant blendsR-404A, R-407C, R-410A, and R-507 conf
7、orm to ISO Standard17584, Refrigerant Properties.Reference states used for most refrigerants correspond to theAmerican convention of 0 Btu/lb for enthalpy and 0 Btu/lbF forentropy for saturated liquid at 40F. Exceptions are water andfluids with very low critical temperatures (e.g., ethylene, cryo-ge
8、ns).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 Inorganic RefrigerantsMethane Series R-717 (ammonia) . . . . . .
9、. . . . . . . . . . . . . . . . . . . . . . . . 30.38R-12 (dichlorodifluoromethane). . . . . . . . . . . . . . . . . . . 30.2 R-718 (water/steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.40R-22 (chlorodifluoromethane) . . . . . . . . . . . . . . . . . . . . 30.4 R-744 (carbon dioxi
10、de) . . . . . . . . . . . . . . . . . . . . . . . . . . 30.42R-23 (trifluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.6R-32 (difluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.8 Hydrocarbon RefrigerantsEthane Series R-50 (methane) . . . . . . . . . . . . . . .
11、. . . . . . . . . . . . . . . . . 30.44R-123 (2,2-dichloro-1,1,1-trifluoroethane) . . . . . . . . . . 30.10 R-170 (ethane). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.46R-124 (2-chloro-1,1,1,2-tetrafluoroethane) . . . . . . . . . . 30.12 R-290 (propane) . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . 30.48R-125 (pentafluoroethane) . . . . . . . . . . . . . . . . . . . . . . . 30.14 R-600 (n-butane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.50R-134a (1,1,1,2-tetrafluoroethane) . . . . . . . . . . . . . . . . . 30.16 R-600a (isobutane)
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.52R-143a (1,1,1-trifluoroethane) . . . . . . . . . . . . . . . . . . . . 30.20 R-1150 (ethylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.54R-152a (1,1-difluoroethane) . . . . . . . . . . . . . . . . . . . . . . 30.2
14、2 R-1270 (propylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.56Propane SeriesR-245fa (1,1,1,3,3-pentafluoropropane). . . . . . . . . . . . . 30.24 Cryogenic FluidsPropylene Series R-704 (helium) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.58R-1234yf (2,3,3
15、,3-tetrafluoroprop-1-ene) . . . . . . . . . . . 30.26 R-728 (nitrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.60R-1234ze(E) (trans-1,3,3,3-tetrafluoropropene). . . . . . . 30.28 R-729 (air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.62Zeotropi
16、c Blends (% by mass) R-732 (oxygen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.64R-404A R-125/143a/134a (44/52/4) . . . . . . . . . . . . . . 30.30 R-740 (argon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.66R-407C R-32/125/134a (23/25/52) . . . . . .
17、 . . . . . . . . . 30.32R-410A R-32/125 (50/50) . . . . . . . . . . . . . . . . . . . . . . 30.34 Absorption SolutionsAzeotropic Blends Ammonia/Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.68R-507A R-125/143a (50/50) . . . . . . . . . . . . . . . . . . . . 30.36 Water/Lithi
18、um Bromide . . . . . . . . . . . . . . . . . . . . . . . . . 30.70The preparation of this chapter is assigned to TC 3.1, Refrigerants and Secondary Coolants.30.2 2013 ASHRAE HandbookFundamentalsFig.1Pressure-EnthalpyDiagram for Refrigerant 12PressureThermophysical Properties of Refrigerants 30.3Refr
19、igerant 12 (Dichlorodifluoromethane) Properties of Saturated Liquid and Saturated VaporTemp.,*FPres-sure, psiaDensity,lb/ft3LiquidVolume,ft3/lbVaporEnthalpy,Btu/lbEntropy,Btu/lbFSpecific Heat cp, Btu/lbFcp/cvVaporVel. of Sound,ft/sViscosity,lbm/fthThermal Cond.,Btu/hftFSurface Tension,dyne/cmTemp.,*
20、 FLiquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor150 0.155 105.01 176.84 22.133 60.979 0.06101 0.20738 0.1955 0.1069 1.1831 3412 387.7 2.493 0.0163 0.0678 0.00244 26.65 150140 0.258 104.10 109.67 20.175 62.044 0.05479 0.20241 0.1962 0.1090 1.1795 3329 393.0 2.212 0.0168
21、 0.0663 0.00257 25.77 140130 0.415 103.18 70.398 18.209 63.125 0.04873 0.19798 0.1970 0.1111 1.1764 3247 398.3 1.981 0.0174 0.0647 0.00270 24.90 130120 0.644 102.26 46.615 16.234 64.219 0.04284 0.19402 0.1979 0.1133 1.1736 3166 403.3 1.789 0.0179 0.0633 0.00283 24.03 120110 0.973 101.34 31.744 14.25
22、0 65.326 0.03708 0.19050 0.1989 0.1154 1.1711 3085 408.3 1.626 0.0184 0.0618 0.00296 23.17 110100 1.430 100.41 22.173 12.255 66.444 0.03146 0.18735 0.2000 0.1175 1.1691 3005 413.0 1.487 0.0190 0.0604 0.00310 22.32 10090 2.052 99.48 15.847 10.248 67.571 0.02596 0.18455 0.2013 0.1197 1.1675 2926 417.5
23、 1.366 0.0195 0.0590 0.00323 21.47 9080 2.880 98.54 11.565 8.228 68.705 0.02057 0.18206 0.2026 0.1218 1.1663 2848 421.8 1.261 0.0200 0.0577 0.00337 20.63 8075 3.387 98.06 9.9506 7.213 69.274 0.01791 0.18092 0.2033 0.1229 1.1659 2809 423.8 1.213 0.0203 0.0570 0.00344 20.22 7570 3.963 97.59 8.6006 6.1
24、94 69.844 0.01529 0.17985 0.2040 0.1240 1.1655 2770 425.8 1.167 0.0206 0.0563 0.00352 19.80 7065 4.616 97.11 7.4658 5.171 70.415 0.01268 0.17884 0.2047 0.1252 1.1653 2732 427.8 1.125 0.0208 0.0557 0.00359 19.39 6560 5.353 96.63 96.63 4.145 7 0.986 0.01010 0.17788 0.2055 0.1263 1.1653 2693 429.6 1.08
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