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制冷剂R134a热力性质表(压熵焓粘密比热)

1/6

-630.0131482.6430.7695119.7002359.41620.6673 1.8080.810.597 1.21880.68450.12230.0063 4.72E-07 1.09E-05 -620.01391479.8780.8193120.9201360.0470.6731 1.80560.81090.5993 1.22020.68710.12180.0064 4.64E-07 1.03E-05 -610.01491477.1080.8717122.1414360.67840.6789 1.80330.81180.6017 1.22160.68970.12120.0065 4.56E-079.73E-06 -600.01591474.3340.9268123.3641361.31040.6846 1.8010.81270.604 1.2230.69240.12070.0066 4.48E-079.19E-06 -590.0171471.5540.9846124.5883361.94290.6903 1.79870.81370.6064 1.22450.6950.12020.0066 4.4E-078.69E-06 -580.01811468.77 1.0454125.8139362.57590.6961 1.79650.81460.6088 1.22590.69770.11970.0067 4.33E-078.22E-06 -570.01931465.981 1.1092127.041363.20930.7017 1.79440.81560.6112 1.22740.70040.11910.0068 4.26E-077.78E-06 -560.02051463.187 1.1762128.2696363.84310.7074 1.79220.81650.6135 1.22890.70310.11860.0069 4.19E-077.37E-06 -550.02181460.387 1.2463129.4998364.47730.7131 1.79020.81750.6159 1.23040.70580.11810.007 4.12E-07 6.99E-06 -540.02321457.582 1.3198130.7314365.11180.7187 1.78820.81850.6183 1.23190.70860.11760.007 4.06E-07 6.63E-06 -530.02471454.772 1.3968131.9646365.74660.7243 1.78620.81950.6207 1.23340.71130.11710.0071 3.99E-07 6.29E-06 -520.02621451.957 1.4773133.1994366.38160.7299 1.78430.82040.6231 1.23490.71410.11660.0072 3.93E-07 5.97E-06 -510.02781449.135 1.5616134.4357367.01670.7355 1.78240.82140.6255 1.23650.71690.11610.0073 3.87E-07 5.67E-06 -500.02951446.309 1.6496135.6736367.65210.741 1.78060.82240.628 1.23810.71970.11560.0074 3.81E-07 5.39E-06 -490.03121443.476 1.7416136.9132368.28750.7465 1.77880.82350.6304 1.23960.72250.11510.0074 3.75E-07 5.13E-06 -480.03311440.637 1.8377138.1543368.92290.7521 1.7770.82450.6328 1.24130.72540.11460.0075 3.7E-07 4.88E-06 -470.0351437.793 1.938139.3971369.55840.7576 1.77530.82550.6353 1.24290.72820.11410.0076 3.64E-07 4.65E-06 -460.0371434.942 2.0427140.6416370.19380.7631 1.77360.82650.6377 1.24450.73110.11360.0077 3.59E-07 4.43E-06 -450.03911432.085 2.1518141.8877370.82910.7685 1.7720.82760.6402 1.24620.73410.11310.0078 3.54E-07 4.22E-06 -440.04131429.222 2.2655143.1355371.46430.774 1.77040.82860.6426 1.24780.7370.11260.0078 3.48E-07 4.03E-06 -430.04361426.352 2.384144.3851372.09940.7794 1.76880.82970.6451 1.24950.740.11210.0079 3.44E-07 3.84E-06 -420.04611423.476 2.5074145.6363372.73420.7848 1.76730.83070.6476 1.25120.7430.11160.008 3.39E-07 3.67E-06 -410.04861420.593 2.6359146.8893373.36870.7902 1.76580.83180.6501 1.25290.7460.11110.0081 3.34E-07 3.5E-06 -400.05121417.703 2.7695148.1441374.0030.7956 1.76430.83280.6526 1.25460.7490.11060.0082 3.29E-07 3.35E-06 -390.0541414.807 2.9085149.4006374.63680.801 1.76290.83390.6551 1.25640.75210.11010.0083 3.25E-07 3.2E-06 -380.05681411.903 3.0529150.6589375.27030.8063 1.76150.8350.6576 1.25810.75520.10960.0083 3.21E-07 3.06E-06 -370.05981408.992 3.2031151.919375.90340.8117 1.76020.83610.6601 1.25990.75830.10910.0084 3.16E-07 2.93E-06 -360.06291406.073 3.359153.181376.53590.817 1.75880.83710.6627 1.26170.76140.10860.0085 3.12E-07 2.8E-06 -350.06611403.148 3.5209154.4447377.1680.8223 1.75750.83820.6652 1.26350.76460.10820.0086 3.08E-07 2.68E-06 -340.06951400.214 3.689155.7104377.79940.8276 1.75630.83930.6678 1.26540.76780.10770.0087 3.04E-07 2.57E-06 -330.0731397.273 3.8633156.9779378.43030.8329 1.7550.84040.6703 1.26720.7710.10720.00873E-07 2.47E-06 -320.07671394.324 4.0441158.2474379.06040.8381 1.75380.84150.6729 1.26910.77430.10670.0088 2.96E-07 2.36E-06 -310.08041391.367 4.2316159.5187379.68990.8434 1.75260.84260.6755 1.2710.77760.10620.0089 2.92E-07 2.27E-06 -300.08441388.402 4.4259160.792380.31860.8486 1.75150.84380.6781 1.27290.78090.10580.009 2.89E-07 2.18E-06 -290.08851385.428 4.6271162.0672380.94650.8538 1.75030.84490.6807 1.27480.78420.10530.0091 2.85E-07 2.09E-06 -280.09271382.446 4.8356163.3444381.57350.8591 1.74920.8460.6833 1.27670.78760.10480.0092 2.82E-07 2.01E-06 -270.09711379.456 5.0514164.6237382.19970.8642 1.74820.84710.686 1.27870.7910.10430.0092 2.78E-07 1.93E-06 -260.10171376.456 5.2748165.9049382.8250.8694 1.74710.84820.6886 1.28070.79440.10390.0093 2.75E-07 1.85E-06 -250.10641373.448 5.5059167.1881383.44920.8746 1.74610.84940.6912 1.28270.79790.10340.0094 2.72E-07 1.78E-06 -240.11131370.43 5.745168.4735384.07250.8798 1.74510.85050.6939 1.28470.80140.10290.0095 2.68E-07 1.72E-06

2/6

-230.11641367.403 5.9922169.7609384.69460.8849 1.74410.85170.6966 1.28680.8050.10250.0096 2.65E-07 1.65E-06 -220.12161364.367 6.2477171.0504385.31570.89 1.74320.85280.6992 1.28880.80850.1020.0097 2.62E-07 1.59E-06 -210.12711361.321 6.5117172.342385.93560.8951 1.74220.8540.7019 1.29090.81220.10150.0097 2.59E-07 1.53E-06 -200.13271358.265 6.7845173.6358386.55430.9002 1.74130.85510.7046 1.2930.81580.10110.0098 2.56E-07 1.47E-06 -190.13861355.27.0662174.9317387.17170.9053 1.74040.85630.7074 1.29520.81950.10060.0099 2.53E-07 1.42E-06 -180.14461352.1247.3571176.2298387.78790.9104 1.73960.85740.7101 1.29730.82320.10010.01 2.5E-07 1.37E-06 -170.15081349.0387.6574177.5302388.40270.9155 1.73870.85860.7128 1.29950.8270.09970.0101 2.47E-07 1.32E-06 -160.15731345.9417.9673178.8327389.01610.9205 1.73790.85980.7155 1.30170.83070.09920.0102 2.44E-07 1.27E-06 -150.16391342.8338.287180.1376389.62810.9256 1.73710.86090.7183 1.3040.83460.09880.0102 2.42E-07 1.23E-06 -140.17081339.7148.6168181.4447390.23860.9306 1.73630.86210.7211 1.30620.83850.09830.0103 2.39E-07 1.19E-06 -130.17791336.5858.9568182.7541390.84760.9356 1.73550.86330.7238 1.30850.84240.09790.0104 2.36E-07 1.14E-06 -120.18521333.4449.3074184.0659391.4550.9407 1.73480.86450.7266 1.31080.84630.09740.0105 2.34E-07 1.11E-06 -110.19281330.2919.6688185.3801392.06080.9457 1.73410.86570.7294 1.31320.85030.09690.0106 2.31E-07 1.07E-06 -100.20061327.12610.0412186.6966392.66490.9506 1.73340.86690.7322 1.31560.85440.09650.0107 2.29E-07 1.03E-06 -90.20861323.9510.4248188.0156393.26730.9556 1.73270.86810.735 1.3180.85840.0960.0107 2.26E-079.97E-07 -80.21691320.76110.8199189.337393.8680.9606 1.7320.86930.7379 1.32040.86260.09560.0108 2.24E-079.64E-07 -70.22551317.55911.2269190.6609394.46680.9656 1.73130.87050.7407 1.32290.86670.09510.0109 2.21E-079.33E-07 -60.23431314.34511.6459191.9873395.06380.9705 1.73070.87170.7435 1.32540.87090.09470.011 2.19E-079.02E-07 -50.24331311.11812.0772193.3162395.65880.9754 1.730.87290.7464 1.32790.87520.09420.0111 2.17E-078.73E-07 -40.25271307.87712.521194.6477396.25190.9804 1.72940.87420.7493 1.33040.87950.09380.0112 2.15E-078.45E-07 -30.26231304.62312.9778195.9818396.84290.9853 1.72880.87540.7521 1.3330.88390.09330.0113 2.12E-078.18E-07 -20.27221301.35513.4477197.3185397.43190.9902 1.72820.87660.755 1.33570.88830.09290.0113 2.1E-077.92E-07 -10.28231298.07313.9311198.6579398.01880.9951 1.72760.87780.7579 1.33830.89270.09250.0114 2.08E-077.67E-07 00.29281294.77714.4282200398.60351 1.72710.87910.7608 1.3410.89720.0920.0115 2.06E-077.43E-07 10.30361291.46614.9394201.3448399.1859 1.0049 1.72650.88030.7637 1.34380.90180.09160.0116 2.04E-077.2E-07 20.31461288.1415.4649202.6924399.7661 1.0098 1.7260.88160.7667 1.34660.90640.09110.0117 2.02E-07 6.98E-07 30.3261284.79916.0051204.0428400.3439 1.0146 1.72550.88280.7696 1.34940.91110.09070.01182E-07 6.77E-07 40.33771281.44316.5603205.396400.9193 1.0195 1.7250.88410.7725 1.35230.91580.09020.0119 1.98E-07 6.57E-07 50.34971278.0717.1309206.7522401.4923 1.0243 1.72450.88540.7755 1.35520.92060.08980.012 1.96E-07 6.37E-07 60.3621274.68117.7171208.1112402.0627 1.0292 1.7240.88660.7785 1.35810.92540.08940.012 1.94E-07 6.18E-07 70.37461271.27618.3193209.4732402.6306 1.034 1.72350.88790.7814 1.36110.93030.08890.0121 1.92E-076E-07 80.38761267.85418.9379210.8381403.1958 1.0388 1.7230.88920.7844 1.36410.93530.08850.0122 1.9E-07 5.82E-07 90.40091264.41519.5733212.2062403.7584 1.0437 1.72260.89050.7874 1.36720.94040.08810.0123 1.88E-07 5.65E-07 100.41461260.95820.2258213.5772404.3181 1.0485 1.72210.89180.7904 1.37040.94550.08760.0124 1.86E-07 5.49E-07 110.42861257.48320.8957214.9515404.8751 1.0533 1.72170.89310.7934 1.37360.95060.08720.0125 1.84E-07 5.33E-07 120.4431253.9921.5836216.3289405.4291 1.0581 1.72120.89440.7965 1.37680.95590.08670.0126 1.83E-07 5.18E-07 130.45781250.47822.2897217.7095405.9801 1.0629 1.72080.89570.7995 1.38010.96120.08630.0127 1.81E-07 5.03E-07 140.47291246.94723.0145219.0933406.5282 1.0677 1.72040.8970.8025 1.38350.96660.08590.0128 1.79E-07 4.89E-07 150.48841243.39623.7584220.4805407.0731 1.0724 1.720.89830.8056 1.38690.97210.08540.0129 1.77E-07 4.75E-07 160.50431239.82524.5219221.871407.6148 1.0772 1.71960.89960.8087 1.39030.97760.0850.013 1.76E-07 4.62E-07

3/6

170.52051236.23425.3054223.2649408.1533 1.082 1.71920.9010.8117 1.39390.98320.08460.013 1.74E-07 4.49E-07 180.53721232.62226.1093224.6623408.6884 1.0867 1.71880.90230.8148 1.39750.9890.08410.0131 1.72E-07 4.37E-07 190.55421228.98926.9341226.0633409.2201 1.0915 1.71840.90370.8179 1.40110.99480.08370.0132 1.71E-07 4.25E-07 200.57171225.33327.7803227.4677409.7483 1.0962 1.7180.9050.821 1.4049 1.00070.08330.0133 1.69E-07 4.14E-07 210.58961221.65628.6483228.8759410.273 1.101 1.71770.90640.8241 1.4087 1.00670.08290.0134 1.68E-07 4.02E-07 220.60791217.95529.5388230.2877410.7939 1.1057 1.71730.90770.8273 1.4125 1.01270.08240.0135 1.66E-07 3.92E-07 230.62661214.23230.4522231.7032411.3112 1.1105 1.71690.90910.8304 1.4165 1.01890.0820.0136 1.65E-07 3.81E-07 240.64581210.48431.3891233.1226411.8245 1.1152 1.71660.91050.8336 1.4205 1.02520.08160.0137 1.63E-07 3.71E-07 250.66541206.71232.35234.5458412.334 1.1199 1.71620.91190.8367 1.4246 1.03160.08110.0138 1.62E-07 3.61E-07 260.68541202.91433.3354235.973412.8394 1.1246 1.71590.91330.8399 1.4288 1.03820.08070.0139 1.6E-07 3.52E-07 270.70591199.09134.3461237.4041413.3406 1.1294 1.71550.91470.8431 1.4331 1.04480.08030.014 1.59E-07 3.43E-07 280.72691195.24235.3825238.8394413.8376 1.1341 1.71520.91610.8463 1.4375 1.05160.07980.0141 1.57E-07 3.34E-07 290.74831191.36636.4454240.2788414.3303 1.1388 1.71480.91750.8495 1.4419 1.05850.07940.0142 1.56E-07 3.26E-07 300.77021187.46237.5353241.7224414.8185 1.1435 1.71450.91890.8527 1.4465 1.06550.0790.0143 1.54E-07 3.17E-07 310.79261183.5338.653243.1703415.3022 1.1482 1.71420.92030.856 1.4511 1.07260.07860.0144 1.53E-07 3.09E-07 320.81541179.56839.7991244.6226415.7811 1.1529 1.71380.92180.8592 1.4559 1.080.07810.0145 1.51E-07 3.01E-07 330.83881175.57840.9744246.0794416.2553 1.1576 1.71350.92320.8625 1.4608 1.08740.07770.0147 1.5E-07 2.94E-07 340.86261171.55642.1797247.5407416.7245 1.1623 1.71310.92470.8658 1.4658 1.0950.07730.0148 1.49E-07 2.87E-07 350.8871167.50343.4156249.0067417.1887 1.167 1.71280.92620.8691 1.4709 1.10280.07690.0149 1.47E-07 2.79E-07 360.91181163.41844.683250.4773417.6476 1.1717 1.71240.92760.8724 1.4761 1.11080.07640.015 1.46E-07 2.73E-07 370.93721159.345.9828251.9528418.1012 1.1764 1.71210.92910.8757 1.4815 1.11890.0760.0151 1.45E-07 2.66E-07 380.96321155.14847.3158253.4333418.5494 1.1811 1.71180.93060.879 1.487 1.12720.07560.0152 1.43E-07 2.59E-07 390.98961150.96248.6829254.9187418.9918 1.1858 1.71140.93210.8824 1.4926 1.13580.07510.0153 1.42E-07 2.53E-07

40 1.01661146.73950.085256.4093419.4285 1.1905 1.71110.93360.8858 1.4984 1.14450.07470.0154 1.41E-07 2.47E-07

41 1.04411142.4851.5232257.9051419.8593 1.1952 1.71070.93520.8891 1.5044 1.15350.07430.0156 1.4E-07 2.41E-07

42 1.07221138.18352.9984259.4062420.2839 1.1999 1.71030.93670.8925 1.5105 1.16260.07390.0157 1.38E-07 2.35E-07

43 1.10091133.84754.5117260.9128420.7022 1.2046 1.710.93820.896 1.5167 1.17210.07340.0158 1.37E-07 2.3E-07

44 1.13011129.47156.0643262.425421.114 1.2092 1.70960.93980.8994 1.5232 1.18180.0730.0159 1.36E-07 2.24E-07

45 1.15991125.05457.6572263.9429421.5191 1.2139 1.70920.94140.9029 1.5298 1.19170.07260.0161 1.35E-07 2.19E-07

46 1.19031120.59559.2916265.4667421.9173 1.2186 1.70890.9430.9063 1.5367 1.20190.07210.0162 1.33E-07 2.14E-07

47 1.22131116.09160.969266.9965422.3085 1.2233 1.70850.94460.9099 1.5437 1.21250.07170.0163 1.32E-07 2.09E-07

48 1.25291111.54362.6905268.5324422.6923 1.228 1.70810.94620.9134 1.5509 1.22330.07130.0165 1.31E-07 2.04E-07

49 1.28511106.94964.4576270.0745423.0685 1.2327 1.70770.94780.9169 1.5584 1.23450.07090.0166 1.3E-07 1.99E-07

50 1.31791102.30666.2716271.6232423.437 1.2375 1.70720.94940.9205 1.5661 1.24610.07040.0167 1.29E-07 1.95E-07

51 1.35131097.61468.1343273.1784423.7974 1.2422 1.70680.95110.9241 1.5741 1.2580.070.0169 1.27E-07 1.9E-07

52 1.38541092.87170.0471274.7404424.1495 1.2469 1.70640.95280.9277 1.5824 1.27030.06960.017 1.26E-07 1.86E-07

53 1.42011088.07572.0117276.3094424.493 1.2516 1.70590.95450.9313 1.5909 1.2830.06910.0172 1.25E-07 1.82E-07

54 1.45551083.22474.03277.8855424.8276 1.2563 1.70550.95620.935 1.5997 1.29620.06870.0173 1.24E-07 1.78E-07

55 1.49151078.31776.1038279.469425.153 1.2611 1.7050.95790.9387 1.6089 1.30990.06830.0175 1.23E-07 1.74E-07

56 1.52821073.35278.2351281.0601425.4689 1.2658 1.70450.95960.9424 1.6184 1.32410.06780.0176 1.22E-07 1.7E-07

4/6

57 1.56561068.32680.4261282.659425.7748 1.2705 1.7040.96140.9462 1.6282 1.33890.06740.0178 1.21E-07 1.66E-07

58 1.60361063.23782.6788284.2659426.0705 1.2753 1.70350.96320.95 1.6384 1.35420.0670.018 1.2E-07 1.63E-07

59 1.64231058.08484.9958285.881426.3556 1.2801 1.7030.9650.9538 1.6491 1.37020.06650.0181 1.18E-07 1.59E-07

60 1.68181052.86287.3794287.5047426.6297 1.2848 1.70240.96680.9577 1.6602 1.38680.06610.0183 1.17E-07 1.55E-07

61 1.72191047.57189.8325289.1372426.8922 1.2896 1.70190.96870.9616 1.6717 1.40420.06570.0185 1.16E-07 1.52E-07

62 1.76281042.20692.3577290.7788427.1428 1.2944 1.70130.97060.9655 1.6838 1.42230.06520.0187 1.15E-07 1.49E-07

63 1.80441036.76594.9582292.4299427.3809 1.2992 1.70060.97250.9695 1.6964 1.44130.06480.0189 1.14E-07 1.46E-07

64 1.84671031.24597.6371294.0907427.6061 1.304 1.70.97440.9735 1.7095 1.46130.06430.0191 1.13E-07 1.42E-07

65 1.88981025.642100.398295.7616427.8177 1.3088 1.69930.97640.9775 1.7234 1.48220.06390.0193 1.12E-07 1.39E-07

66 1.93371019.953103.2445297.443428.0151 1.3137 1.69870.97840.9816 1.7379 1.50420.06350.0195 1.11E-07 1.36E-07

67 1.97831014.174106.1806299.1354428.1978 1.3185 1.69790.98050.9858 1.7531 1.52730.0630.0197 1.1E-07 1.34E-07

68 2.02371008.299109.2107300.8391428.365 1.3234 1.69720.98260.99 1.7691 1.55180.06260.02 1.09E-07 1.31E-07

69 2.06981002.326112.3393302.5546428.5159 1.3283 1.69640.98470.9943 1.786 1.57770.06210.0202 1.08E-07 1.28E-07

70 2.1168996.2482115.5715304.2824428.6498 1.3332 1.69560.98690.9986 1.8039 1.60510.06170.0205 1.07E-07 1.25E-07

71 2.1646990.0608118.9127306.0231428.7658 1.3381 1.69480.9892 1.003 1.8228 1.63420.06120.0207 1.06E-07 1.23E-07

72 2.2132983.7579122.3689307.7774428.8629 1.343 1.69390.9915 1.0074 1.8429 1.66510.06080.021 1.05E-07 1.2E-07

73 2.2627977.3329125.9464309.5457428.9401 1.348 1.69290.9938 1.012 1.8643 1.69820.06030.0213 1.04E-07 1.18E-07

74 2.313970.7788129.6523311.3289428.9962 1.353 1.6920.9963 1.0165 1.8871 1.73350.05990.0216 1.03E-07 1.15E-07

75 2.3641964.0878133.4943313.1278429.0302 1.358 1.69090.9988 1.0212 1.9115 1.77140.05940.0219 1.02E-07 1.13E-07

76 2.4161957.2514137.481314.9431429.0405 1.3631 1.6899 1.0014 1.026 1.9376 1.81220.0590.0222 1.01E-07 1.1E-07

77 2.469950.26141.6218316.776429.0257 1.3682 1.6887 1.0041 1.0308 1.9657 1.85620.05850.02269.98E-08 1.08E-07

78 2.5228943.1032145.9269318.6273428.9842 1.3733 1.6876 1.0069 1.0358 1.9961 1.90390.05810.02299.88E-08 1.06E-07

79 2.5776935.769150.4082320.4983428.9142 1.3784 1.6863 1.0098 1.0408 2.029 1.95570.05760.02339.78E-08 1.04E-07

80 2.6332928.2444155.0784322.3903428.8136 1.3836 1.685 1.0129 1.046 2.0648 2.01220.05710.02379.68E-08 1.02E-07

81 2.6898920.5144159.9524324.3047428.6801 1.3889 1.6836 1.0161 1.0513 2.104 2.07430.05670.02429.58E-089.97E-08

82 2.7473912.562165.0465326.2433428.5111 1.3942 1.6821 1.0195 1.0567 2.147 2.14260.05620.02469.48E-089.76E-08

83 2.8058904.3681170.3796328.208428.3038 1.3995 1.6806 1.0231 1.0623 2.1945 2.21820.05580.02519.38E-089.57E-08

84 2.8653895.9105175.9734330.2008428.0547 1.4049 1.6789 1.0268 1.068 2.2473 2.30260.05530.02569.27E-089.38E-08

85 2.9258887.1636181.8526332.2244427.7601 1.4104 1.6771 1.0308 1.0739 2.3064 2.39710.05490.02629.17E-089.19E-08

86 2.9874878.0975188.0465334.2817427.4155 1.4159 1.6752 1.0351 1.08 2.373 2.5040.05440.02689.07E-089.01E-08

87 3.0499868.6771194.589336.3762427.0156 1.4215 1.6732 1.0397 1.0863 2.4488 2.62570.0540.02758.97E-088.83E-08

88 3.1136858.8606201.5211338.5119426.5543 1.4273 1.671 1.0446 1.0929 2.5358 2.76580.05360.02828.86E-088.65E-08

89 3.1783848.5975208.8917340.6939426.024 1.4331 1.6687 1.0499 1.0997 2.6369 2.92870.05320.0298.75E-088.48E-08

90 3.2442837.826216.7608342.9282425.4156 1.439 1.6662 1.0556 1.1068 2.7559 3.12070.05280.02988.65E-088.31E-08

91 3.3112826.4695225.2034345.2224424.7179 1.4451 1.6634 1.0618 1.1143 2.8983 3.35040.05240.03088.54E-088.15E-08

92 3.3793814.4304234.3145347.5863423.9165 1.4514 1.6604 1.0686 1.1221 3.0719 3.63030.0520.03188.43E-087.99E-08

93 3.4487801.5816244.2182350.0324422.9929 1.4578 1.6571 1.0762 1.1305 3.2886 3.97890.05180.0338.31E-087.83E-08

94 3.5193787.7525255.0817352.5778421.9221 1.4645 1.6534 1.0845 1.1394 3.5669 4.42580.05160.03448.19E-087.68E-08

95 3.5912772.7041267.1388355.2463420.6695 1.4715 1.6492 1.0938 1.1489 3.9385 5.01950.05150.03618.07E-087.53E-08

96 3.6645756.0854280.7345358.0735419.1841 1.4789 1.6445 1.1044 1.1593 4.4602 5.84780.05150.03817.94E-087.38E-08

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97 3.7391737.3419296.4142361.1153417.3863 1.4869 1.6389 1.1165 1.1708 5.24757.08550.05180.04067.81E-087.24E-08

98 3.8152715.5068315.1319364.4703415.1377 1.4957 1.6322 1.131 1.1838 6.57359.14020.05260.04397.66E-087.1E-08

99 3.8929688.603338.8465368.3417412.1581 1.5058 1.6235 1.149 1.1999.272313.22920.05430.0497.49E-08 6.95E-08 100 3.9724651.1781373.0109373.2979407.6832 1.5188 1.6109 1.1737 1.21817.591625.35030.05890.0597.28E-08 6.81E-08

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制冷剂R a热力性质表压熵焓粘密比热

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常用制冷剂简介

常用制冷剂简介制冷剂又称制冷工质，是制冷循环的工作介质，利用制冷剂的相变来传递热量，既制冷剂在蒸发器中汽化时吸热，在冷凝器中凝结时放热。当前能用作制冷剂的物质有80多种，最常用的是氨、氟里昂类、水和少数碳氢化合物等。 1987年9月在加拿大的蒙特利尔室召开了专门性的国际会议，并签署了《关于消耗臭氧层的蒙特利尔协议书》，于1989年1月1日起生效，对氟里昂在的R11、R12、R113、R114、R115、R502及R22等CFC类的生产进行限制。1990年6月在伦敦召开了该议定书缔约国的第二次会议，增加了对全部CFC、四氯化碳（CCL4）和甲基氯仿（C2H3CL3）生产的限制，要求缔约国中的发达国家在2000年完全停止生产以上物质，发展中国家可推迟到2010年。另外对过渡性物质HCFC提出了2020年后的控制日程表。 HCFC中的R123和R134a是R12和R22的替代品。热力学的要求 1 在大气压力下，制冷剂的蒸发温度(沸点)ts要低。这是一个很重要的性能指标。ts愈低，则不仅可以制取较低的温度，而且还可以在一定的蒸发温度to下，使其蒸发压力Po高于大气压力。以避免空气进入制冷系统，发生泄漏时较容易发现。 2 要求制冷剂在常温下的冷凝压力Pc应尽量低些，以免处于高压下工作的压缩机、冷凝器及排气管道等设备的强度要求过高。并且，冷凝压力过高也有导致制冷剂向外渗漏的可能和引起消耗功的增大。 3 对于大型活塞式压缩机来说，制冷剂的单位容积制冷量qv要求尽可能大，这样可以缩小压缩机尺寸和减少制冷工质的循环量；而对于小型或微型压缩机，单位容积制冷量可小一些；对于小型离心式压缩机亦要求制冷剂qv要小，以扩大离心式压缩机的使用范围，并避免小尺寸叶轮制造之困难。 4 制冷剂的临界温度要高些、冷凝温度要低些。临界温度的高低确定了制冷剂在常温或普通低温范围内能否液化。 5 凝固温度是制冷剂使用范围的下限，冷凝温度越低制冷剂的适用范围愈大。制冷剂分子式分子量u 正常蒸发温度ts(℃) 凝固点tf(℃) 临界温度tkp(℃) 临界压力PKP绝对压力绝热指数K 水（R718） H2O 18.02 +100 ±0 +374.1 225.6 1.33 氨（R717） NH3 17.03 -33.4 -77.7 +132.4 115.2 1.31 R11 CFCL3 137.39 +23.7 -111 +198 44.6 1.17 R12 CF2CL2 120.92 -29.8 -155 +111.5 40.86 1.15 R13 CF3CL 104.47 -81.5 -180 +28.8 39.4 -

R717饱和热力性质表

附录八R717饱和热力性质表温度绝对压力比容焓熵液体蒸汽液体蒸汽液体蒸汽 ℃MPa L/kg m3/kg kJ/kg kJ/(kg·K) -56 -54 -52 -50 -48 -46 -44 -42 -40 -38 -36 -34 -32 -30 -28 -26 -24 -22 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 120.02832 0.03208 0.03624 0.04085 0.04592 0.05151 0.05764 0.06436 0.07171 0.07973 0.08847 0.09797 0.10828 0.11946 0.13154 0.14460 0.15857 0.17382 0.19011 0.20750 0.22634 0.24640 0.26785 0.29075 0.31517 0.34117 0.36883 0.39822 0.42941 0.46248 0.49750 0.53454 0.57370 0.61503 0.65864 1.4099 1.4146 1.4194 1.4242 1.4290 1.4340 1.4389 1.440 1.4491 1.4542 1.4694 1.4647 1.4701 1.4755 1.4810 1.4865 1.4921 1.4978 1.5036 1.5094 1.5154 1.5214 1.5275 1.5337 1.5398 1.5463 1.5527 1.5593 1.5659 1.5727 1.5795 1.5865 1.5936 1.6008 1.6081 3.69622 3.29060 2.93446 2.62526 2.35228 2.11331 1.90243 1.71627 1.55124 1.40491 1.27462 1.15863 1.05514 0.96244 0.87941 0.80492 0.73781 0.67731 0.62275 0.57340 0.52869 0.48811 0.45124 0.41770 0.38712 0.35923 0.33372 0.31038 0.28899 0.26985 0.25132 0.23472 0.21944 0.20535 0.19233 250.12 258.48 267.82 276.05 285.24 293.85 302.63 311.35 320.24 329.05 338.04 346.94 355.77 364.76 373.66 382.49 391.47 400.50 409.43 418.40 427.41 436.45 445.52 454.56 463.63 472.67 481.80 490.90 500.02 509.18 518.33 527.50 536.68 545.88 555.10 1681.29 1684.74 1688.08 1691.48 1694.77 1698.07 1701.32 1704.54 1707.70 1710.83 1713.90 1716.94 1719.95 1722.89 1725.80 1728.67 1731.48 1734.24 1736.95 1739.62 1742.22 1744.48 1747.28 1749.72 1752.11 1754.45 1756.72 1758.94 1761.10 1763.19 1765.23 1767.20 1769.11 1770.96 1772.74 0.9795 1.0179 1.0602 1.0973 1.1382 1.1762 1.2147 1.2525 1.2908 1.3284 1.3664 1.4037 1.4404 1.4775 1.5139 1.5496 1.5858 1.6217 1.6571 1.6923 1.7273 1.7622 1.7970 1.8313 1.8655 1.8993 1.9332 1.9667 2.0001 2.0333 2.0662 2.0990 2.1315 2.1639 2.1961 7.5702 7.5260 7.4824 7.4402 7.3986 7.3582 7.3185 7.2798 7.2415 7.2046 7.1681 7.1324 7.0974 7.0631 7.0294 6.9965 6.9641 6.9323 6.9011 6.8705 6.8404 6.8108 6.7817 6.7531 6.7250 6.6973 6.6701 6.6433 6.6169 6.5909 6.5652 6.5400 6.5151 6.4905 6.4663

常见制冷剂热力性质表

附录：附表1：R12饱和液体及蒸汽热力性质表附表2：R13饱和液体及蒸汽热力性质表附表3：R22饱和液体及蒸汽热力性质表附表4：R134a饱和液体及蒸汽热力性质表附表5：R152a饱和液体及蒸汽热力性质表附表6：R600a饱和液体及蒸汽热力性质表附表7：R407c饱和液体及蒸汽热力性质表附表8：R123饱和液体及蒸汽热力性质表附表9：R410a饱和液体及蒸汽热力性质表

附表1：R12饱和液体及蒸汽热力性质表 R12饱和液体及蒸汽热力性质表温度绝对压力密度密度比焓比焓比熵比熵t pρ′ρ″h′h″s′s″℃MPa kg/m3kg/m3kJ/kg kJ/kg kJ/kg·K kJ/kg·K -1000.00118851679.10.099959113.32306.090.60771 1.721 -990.00130441676.50.10908114.14306.540.61242 1.7172 -980.00142981673.90.1189114.96306.980.61711 1.7135 -970.00156531671.30.12945115.78307.430.62178 1.7098 -960.00171171668.60.14077116.6307.880.62642 1.7062 -950.001869616660.15291117.42308.320.63105 1.7026 -940.00203971663.40.16592118.24308.770.63564 1.6992 -930.00222281660.70.17983119.06309.230.64022 1.6958 -920.00241971658.10.19471119.88309.680.64477 1.6925 -910.00263111655.50.21059120.71310.130.6493 1.6892 -900.0028581652.80.22754121.53310.590.65381 1.6861 -890.00310131650.20.24561122.36311.040.6583 1.6829 -880.00336171647.50.26485123.18311.50.66277 1.6799 -870.00364041644.90.28532124.01311.960.66722 1.6769 -860.00393831642.20.30708124.83312.410.67164 1.6739 -850.00425651639.60.33019125.66312.870.67605 1.6711 -840.00459591636.90.35471126.49313.340.68044 1.6683 -830.00495781634.30.38072127.32313.80.68481 1.6655 -820.00534321631.60.40827128.15314.260.68916 1.6628 -810.005753416290.43743128.98314.720.69349 1.6602 -800.00618961626.30.46827129.81315.190.6978 1.6576 -790.00665291623.60.50087130.64315.650.7021 1.655 -780.007144916210.53531131.47316.120.70637 1.6525 -770.00766671618.30.57164132.31316.580.71063 1.6501 -760.00821981615.60.60996133.14317.050.71487 1.6477 -750.00880561612.90.65034133.98317.520.7191 1.6454 -740.00942561610.30.69286134.81317.990.7233 1.6431 -730.010*******.60.73761135.65318.460.72749 1.6409 -720.010*******.90.78466136.49318.930.73167 1.6387 -710.0115061602.20.83411137.33319.40.73583 1.6365 -700.0122781599.50.88605138.17319.870.73997 1.6344 -690.0130921596.80.94056139.01320.340.74409 1.6323 -680.013951594.10.99774139.85320.820.7482 1.6303 -670.0148541591.4 1.0577140.69321.290.7523 1.6283 -660.0158051588.7 1.1205141.54321.760.75638 1.6264

常用制冷剂R134a的特性

常用制冷剂R134a的特性时间：2010-02-22 来源：互联网发布评论进入论坛 R134a（SUVA 134a），化学名：1,1,1,2-- 四氟乙烷，分子组成：CH2FCF3，CAS注册号：811-97-2，分子量：102.0，HFC型制冷剂，ODP值为零。R134a 的热力和物理性质，以及其低毒性，使之成为一种非常有效和安全的替代品。HFC-134a可用在目前使用CFC-12（二氯二氟甲烷）的许多领域，包括：汽车空调、家用电器、小型固定制冷设备、超级市场的中温制冷、工商业的制冷机，聚合物发泡，气雾剂产品，以及镁合金保护气体等。 R134a 作为新一代的环保制冷剂，用于替代R12（二氯二氟甲烷），R22，主要应用于汽车空调，冰箱，冷柜，饮水机，除湿机，中央空调(冷水机组)等制冷空调设备中。用作保护气体：用于镁合金加工上的保护气体。用于聚合物发泡：聚合物发泡。用于气雾剂：HFC-134a也可用于那些对毒性和可燃性要求严格的气雾剂中；由于HFC-134a 的低毒和不易燃性，它被研制用于药物吸入剂的载体（即医用气雾剂）。压缩机生产商通常建议使用多元醇酯POE（Polyol Ester）和聚二醇PAG（Polyalkylene Glycol）（汽车空调）冷冻机油。 HFC-134a的主要物化性质

中温制冷情况下CFC-12和HFC-134a理论性能的对照膨胀阀的结构和工作原理 1热力膨胀阀的作用：热力膨胀阀安装在蒸发器入口，常称为膨胀阀，主要作用有两个：1）节流做用：高温高压的液态制冷剂经过膨胀阀的节流孔节流后，成为低温低压的雾状的液压制冷剂，为制冷剂的蒸发创造条件； 2）控制制冷剂的流量：进入蒸发器的液态制冷剂，经过蒸发器后，制冷剂由液态蒸发为气态，吸收热量，降低车内的温度。膨胀阀控制制冷剂的流量，保证蒸发器的出口完全为气态制冷剂，若流量过大，出口含有液态制冷剂，可能进入压缩机产生液击；若制冷剂流量过小，提前蒸发完毕，造成制冷不足；

未饱和水与过热水蒸气热力性质表

未饱和水与过热水蒸气热力性质表红字以上的为未饱和水，红字一下的为过热蒸汽 / ℃ 0 0.001002 -0.05 -0.0002 0.0010002 -0.05 -0.0002 10 130.598 2519.0 8.9938 0.0010003 42.01 0.1510 20 135.226 2537.7 9.0588 0.0010018 83.87 0.2963 40 144.475 2575.2 9.1823 28.854 2574.0 8.43466 60 153.717 2612.7 9.2984 30.712 2611.8 8.5537 80 162.956 2650.3 9.4080 32.566 2649.7 8.6639 100 172.192 2688.0 9.5120 34.418 2687.5 8.7682 120 181.426 2725.9 9.6109 36.269 2725.5 8.8674 140 190.660 2764.0 9.7054 38.118 2763.7 8.9620 160 199.893 2802.3 9.7959 39.967 2802.0 9.0526 180 209.126 2840.7 9.8827 41.815 2840.5 9.1396

200 218.358 2879.4 9.9662 43.662 2879.2 9.2232 220 227.590 2918.3 10.0468 .45.510 2918.2 9.3038 240 236.821 2957.5 10.1246 47.357 2957.3 9.3816 260 246.053 2996.8 10.1998 49.204 2996.7 9.4569 280 255.284 3036.4 10.2727 51.051 3036.3 9.5298 300 264.515 3076.2 10.3434 52.898 3076.1 9.6005 350 287.592 3176.8 10.5117 57.514 3176.7 9.7688 400 310.669 3278.9 10.6692 62.131 3278.8 9.9264 450 333.746 3382.4 10.8176 66.747 3382.4 10.0747 500 356.823 3487.5 10.9581 71.362 3487.5 10.2153 550 379.900 3594.4 11.0921 75.978 3594.4 10.3493 600 402.976 3703.4 11.2206 80.594 3703.4 10.4778 / ℃ 0 0.0010002 -0.04 -0.0002 0.0010002 0.05 -0.0002

常用制冷剂种类及特性

说明制冷剂又称制冷工质， 1987 HCFC 制冷剂的要求热力学的要求在大气压力下，要求制冷剂在常温下的冷凝压力对于大型活塞式压缩机来说，制冷剂的单位容积制冷量制冷剂的临界温度要高些、冷凝温度要低些。临界温度的高低确定了制冷剂在

凝固温度是制冷剂使用范围的下限，冷凝温度越低制冷剂的适用范围愈大。物理化学的要求制冷剂的粘度应尽可能小，以减少管道流动阻力、提换热设备的传热强度。制冷剂的导热系数应当高，以提高换热设备的效率，减少传热面积。制冷剂与油的互溶性质：制冷剂溶解于润滑油的性质应从两个方面来分析。如应具有一定的吸水性，应具有化学稳定性：不燃烧、不爆炸，使用中不分解，不变质。同时制冷剂本

安全性的要求由于制冷剂在运行中可能泄漏，故要求工质对人身健康无损害、无毒性、无刺激作用。制冷剂的分类在压缩式制冷剂中广泛使用的制冷剂是氨、无机化合物制冷剂：这类制冷剂使用得比较早，如氨（氟里昂（卤碳化合物制冷剂）：氟里昂是饱和碳氢化合物中全部或部分氢元素饱和碳氢化合物：这类制冷剂中主要有甲烷、乙烷、丙烷、丁烷和环状有机化不饱和碳氢化合物制冷剂：这类制冷剂中主要是乙烯（共沸混合物制冷剂：这类制冷剂是由两种以上不同制冷剂以一定比例混合而成高温、中温及低温制冷剂：是按制冷剂的标准蒸发温度和常温下冷凝压力来分

氨（氨（氨的临界温度较高纯氨对润滑油无不良影响，但有水分时，会降低冷冻油的润滑作用。纯氨对钢铁无腐蚀作用，但当氨中含有水分时将腐蚀铜和铜合金（磷青铜除氨的蒸气无色，有强烈的刺激臭味。氨对人体有较大的毒性，当氨液飞溅到皮氨在常温下不易燃烧，但加热至氟哩昂的特性氟哩昂是一种透明、无味、无毒、不易燃烧、爆炸和化学性稳定的制冷剂。不同的化学组氟里昂对水的溶解度小，

饱和水和饱和水蒸气热力性质表

饱和水和饱和水蒸气热力性质表(按压力排列) 压力温度比体积比焓汽化潜热比熵 p t γ Mpa ℃m3/kg m3/kg kJ/kg kJ/kg kJ/kg kJ/(kg·K）kJ/（kg·K）0.001 6.9491 0.0010001 129.185 29.21 2513.29 2484.1 0.1056 8.9735 0.002 17.5403 0.0010014 67.008 73.58 2532.71 2459.1 0.2611 8.722 0.003 24.1142 0.0010028 45.666 101.07 2544.68 2443.6 0.3546 8.5758 0.004 28.9533 0.0010041 34.796 121.3 2553.45 2432.2 0.4221 8.4725 0.005 32.8793 0.0010053 28.101 137.72 2560.55 2422.8 0.4761 8.393 0.006 36.1663 0.0010065 23.738 151.47 2566.48 2415 0.5208 8.3283 0.007 38.9967 0.0010075 20.528 163.31 2571.56 2408.3 0.5589 8.2737 0.008 41.5075 0,0010085 18.102 173.81 2576.06 2402.3 0.5924 8.2266 0.009 43.7901 0.0010094 16.204 183.36 2580.15 2396.8 0.6226 8.1854 0.01 45.7988 0.0010103 14.673 191.76 2583.72 2392 0.649 8.1481 0.015 53.9705 0.001014 10.022 225.93 2598.21 2372.3 0.7548 8.0065 0.02 60.065 0.0010172 7.6497 251.43 2608.9 2357.5 0.832 7.9068 0.025 64.9726 0.0010198 6.2047 271.96 2617.43 2345.5 0.8932 7.8298 0.03 69.1041 0.0010222 5.2296 289.26 2624.56 2335.3 0.944 7.7671 0.04 75.872 0.0010264 3.9939 317.61 2636.1 2318.5 1.026 7.6688 0.05 81.3388 0.0010299 3.2409 340.55 2645.31 2304.8 1.0912 7.5928 0.06 85.9496 0.0010331 2.7324 359.91 2652.97 2293.1 1.1454 7.531 0.07 89.9556 0.0010359 2.3654 376.75 2659.55 2282.8 1.1921 7.4789

制冷剂的类型与参数

制冷剂的类型与参数按制冷剂包含的成份可分为： 1、单一制冷剂 2、混合制冷剂。单一制冷剂只含有一种化学物质，其热物理性能参数恒定不变，如，R134a、R152a等制冷剂都具有较高的能量效率。混合制冷剂是由两种或两种以上制冷剂组成的混合物。根据它在气液相平衡时气相和液相的组成是否相等又分为： 1、共沸混合制冷剂：气液相平衡时气液两相组成相等的属于共沸混合制冷剂(包括相平衡时气液两相组成近似相等的近共沸混合制冷剂)， 2、非共沸混合制冷剂。组成不相等的属于非共沸混合制冷剂。共沸混合制冷剂的选用与节能共沸混合制冷剂在一定的压力下蒸发和冷凝时，气相和液相的组成不变，且能保持恒定的温度。它和单一制冷剂具有近似的热物理性能。这类制冷制是研究和应用最早、最成熟的制冷剂，现将已研究的共沸混合制冷剂列入表1中。对于非共沸混合制冷剂，其在蒸发器中的蒸发过程及在冷凝器中的冷凝过程都是非理想混合过程。这两种非理想混合过程使得混合制冷剂在制冷系统中冷凝压力降低，蒸发压力升高，压缩机的排气温度降低。这就使得制冷机的压比降低，制冷系数提高，从而提高了制冷系统的能量效率。

不同种类的混合制冷剂具有不同的热物理性质，这就会为制冷剂的优选提供了较大的余地。对于某一固定的制冷系统，在其最佳运行工况下，要求制冷剂必须具有特定的热物理性质。合理选用不同的共沸混合制冷剂使其满足这种特定的热物理性质，就可以提高制冷系统的热力学效率，从而达到节能的效果。由于共沸混合制冷剂可使冷凝压力降低，而同时蒸发压力升高，这样在冷凝温度和蒸发温度不变的情况下，压缩机的压比就会减小，从而使压缩机的功耗降低。因此获得同样的制冷量时就只需较少的功。同时蒸发压力的升高会减小蒸发器的真空度，使蒸发器更稳定地工作，而冷凝压力的降低会使冷凝器在更安全的状态下远行。印度的制冷专家C.P.A RORA在第十五届国际制冷学会上发表的论文中，以共沸混合制冷剂R22/R12(85/15)为例肯定了这个效果。由于压比的降低，压缩机的容积效率得到改进，制冷量增加，性能系数提高，同时压缩机的电机温度也从87.5℃降低到70.3℃，电机启动线圈的温度从97.3℃降到58.3℃，对空调器的安全运转起了重要的作用。采用共沸混合制冷剂能够使压缩机的排气温度降低，它与制冷剂的性质密切相关。研究证明制冷剂的热容越大或绝热指数越小，则压缩机的排气温度就越低。制冷剂R115、R114、RC318的热容都很大，它们作为混合制冷剂的组分都有降低压缩机排气温度的能力。如共沸混合制冷剂R22/R115(48.8/51.2)在冷凝温度44℃、蒸发温度-12℃的情况下，其排气温度为108℃，而采用单一制冷剂R22，其排气温度为133℃；采用R12时排气温度为112℃。非共沸混合制冷剂的应用与节能非共沸混合制冷剂在蒸发和冷凝时，温度及气液相组成是不断变化的，正是由于它在蒸发器和冷凝器中的温度变化，在蒸发器和冷凝器中实现了非等温换热，表现出它自己独特的节能特点。现将正在使用和研究的非共沸混合制冷剂列入表2中。非共沸混合制冷剂在相变过程中出现各组分的混合与分离现象。冷凝过程是

热力性质表 R502

T P VL Vg Hl Hg R Sl Sg 癈Bar dm^3/kg m^3/kg kJ/kg kJ/kg kJ/kg kJ/(kg K)kJ/(kg K) -45.00 1.0330.67560.15794153.41325.73172.320.8155 1.5708 -44.00 1.0820.67710.15125154.34326.23171.890.8196 1.5697 -43.00 1.1330.67850.14490155.28326.73171.450.8236 1.5686 -42.00 1.1850.68000.13887156.22327.22171.000.8277 1.5675 -41.00 1.2400.68150.13315157.17327.71170.550.8318 1.5664 -40.00 1.2960.68300.12771158.12328.21170.090.8358 1.5654 -39.00 1.3550.68460.12253159.08328.70169.620.8399 1.5643 -38.00 1.4150.68610.11761160.04329.19169.150.8440 1.5633 -37.00 1.4780.68770.11292161.01329.68168.670.8481 1.5624 -36.00 1.5430.68920.10847161.98330.17168.190.8522 1.5614 -35.00 1.6100.69080.10422162.95330.66167.700.8563 1.5604 -34.00 1.6790.69240.10017163.93331.14167.210.8604 1.5595 -33.00 1.7500.69400.09632164.92331.63166.710.8644 1.5586 -32.00 1.8240.69560.09264165.91332.11166.200.8685 1.5577 -31.00 1.9000.69720.08913166.91332.59165.690.8726 1.5569 -30.00 1.9790.69890.08578167.91333.07165.170.8767 1.5560 -29.00 2.0600.70050.08259168.91333.55164.640.8808 1.5552 -28.00 2.1430.70220.07953169.92334.03164.110.8849 1.5544 -27.00 2.2300.70390.07662170.94334.51163.570.8890 1.5536 -26.00 2.3180.70560.07383171.95334.98163.030.8932 1.5528 -25.00 2.4100.70730.07116172.98335.45162.480.8973 1.5520 -24.00 2.5040.70900.06862174.01335.93161.920.9014 1.5513 -23.00 2.6010.71080.06618175.04336.40161.360.9055 1.5505 -22.00 2.7010.71260.06384176.08336.86160.790.9096 1.5498 -21.00 2.8040.71430.06161177.12337.33160.210.9137 1.5491 -20.00 2.9100.71610.05947178.16337.79159.630.9178 1.5484 -19.00 3.0190.71790.05742179.21338.26159.040.9219 1.5477 -18.00 3.1310.71980.05545180.27338.72158.450.9260 1.5470 -17.00 3.2460.72160.05357181.33339.18157.850.9301 1.5464 -16.00 3.3640.72350.05176182.39339.63157.240.9343 1.5457 -15.00 3.4860.72540.05003183.46340.09156.630.9384 1.5451 -14.00 3.6100.72730.04836184.54340.54156.010.9425 1.5445 -13.00 3.7380.72920.04677185.61340.99155.380.9466 1.5439 -12.00 3.8700.73110.04523186.69341.44154.750.9507 1.5433 -11.00 4.0050.73310.04376187.78341.89154.110.9548 1.5427 -10.00 4.1430.73510.04235188.87342.33153.460.9589 1.5421 -9.00 4.2850.73710.04099189.96342.77152.810.9630 1.5415 -8.00 4.4300.73910.03968191.06343.21152.150.9672 1.5410 -7.00 4.5800.74110.03842192.17343.65151.490.9713 1.5404 -6.00 4.7330.74320.03721193.27344.09150.810.9754 1.5399 PDF created with pdfFactory trial version https://www.wendangku.net/doc/a03861269.html,

1.2常用制冷剂的性质

教案授课教师：审阅签名：提交日期：审阅日期：

教学引入（3分钟）新课讲授（30分钟）讲授提问常见制冷剂性质（一）对于常见制冷剂性质请同学们自行对照教材了解，主要注意以下几个方面： 1.气味 2.毒性 3.燃烧、爆炸性、腐蚀性 4.跟润滑油、水的溶解性 5.热力性能 6.来源、成本（二）氨（R717）的特性（三）氨（R717）的特性（四）氟里昂的特性（五）制冷剂对环境的影响一、臭氧层破坏：制冷剂总是会泄露，当氟利昂分子在高空受到紫外线照射后产生下列反应： CF2Cl2——CF2Cl+Cl Cl+O3——ClO+O2 ClO+O3——Cl+2O2 一个Cl原子可以破坏数百万个臭氧分子，最终导致臭氧层破坏。二、温室效应载冷剂选择要求 )载冷剂在工作温度下应处于液体状态；其凝固温度应低于工作温度，沸点应高于工作温度。 2)比热要大，在传递一定冷量时，可使载冷剂的循环量小。使输送载冷剂的泵耗功减少，管道的耗材量也将减少，从而提高循环的经济性 3)导热系数要大，可增加传热效果，减少换热设备的传热面积。 4)粘度小，密度也要小，以减少流动阻力和输送泵的功率。 5)化学稳定性好，载冷剂应在工作温度下不分解，不与空气中的氧气起化学反应，不发生物理化学性质的变化。不燃烧、不爆炸，挥发性要小。6)要求对人体和食品、环境无毒、无害，不会引起其他物质的变色、变味、变质。 7)不腐蚀设备和管道。 8)价格低廉，便于获得。在实际工程中使用的载冷剂有：水、氯化钠水溶液、氯化钙水溶液、乙二醇水溶液、甲醇、乙醇、三氯乙烯、二氯甲烷和三氯氟甲烷等。对于5℃以上的系统一般直接采用水作为载冷剂，对于0℃~-50℃的系统一般采用盐水作为载冷剂。在食品加工和药品加工中一般采用酒精水作为载冷剂。一些特殊场合会用到三氯乙烯、二氯甲烷和三氯氟甲烷等。常用载冷剂的特性用的载冷剂有空气、水、盐水和有机物。 1、空气：空气作为载冷剂在冷库及空调中多有采用。空气比热容较小，所需传热面积大。 2、水：水是一种比较理想的载冷剂，它比热容大，密度小、对设备和管