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换热器面积及冷却水量计算--

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压力牛顿/米2 (N/㎡)或帕斯卡(Pa)1105..9.807×1046.895×1031.013×1051.333×1023.386×1039.798巴(bar)10-5.10.98076.895×10-21.0131.333×10-33.386×10-29.798×10-5公斤/厘米2(kg/c㎡)或工程大气压(at)1.02×10-51.0217.031×10-21.0331.36×10-33.453×10-29.991×10-5磅/英寸2(1b/in2)1.45×10-414.514.22114.71.934×10-20.49121.421×10-32.489×1022.489×10-32.538×10-33.609×10-21达因/厘米2(dyn/c㎡)=1巴利(barye)=1微巴(wbar)=10-6巴(bar)1毫米水柱(mmH2O)(4℃)=1公斤/米2(kg/m2)1毫米汞柱(mmH2O)(0℃)= 1乇(torr)1磅达/英尺2(pdl/ft2)=1.488牛顿/米2(N/㎡)传热系数单位换算焦耳/米2.秒.KJ/(㎡.S.K)或瓦/米2.K[W/(㎡.K)]11.1624.187×1045.678千卡/米2.时.℃[kcal(㎡.h.℃)]0.859813.6×1044.8822卡/厘米2.秒℃英热单位/英尺.[cal/(c㎡.s.时.。F℃)][Btu/(ft2h.。F]2.388×10-52.778×10-511.356×10-40.17610.204873731扩散系数单位换算厘米/2秒(㎡/s)12.7780.2581米2/时(㎡/h)0.3610.0929英尺2/时(ft2/h)3.87510.761英尺2/秒in2/s0.1550.43060.046.4522.323251表面张力单位换算达因/厘米(dyn/cm)1980.7980714592克/厘米(g/cm)1.02×10-311014.88公斤/米(kg/m)1.02×10-40.111.488磅/英尺(lb/ft)6.854×10-56.72×10-20.6721温度换算公式摄氏度℃℃ 5/9(℉-32)5/9(。R-491.67)K-273.15②焦耳(J)19.8072.648×1062.685×1063.6×106418710551.356。华氏度℉9/5℃+32℉R-459.679/5K-459.67公斤.米(kg.m)0.10212.7×1052.738×1053.671×105426.9107.60.1383兰金/①度。R9/5℃+491.67℉+459.67。开尔文K℃+273.15②5/9(℉+459.67)5/9。RK功、能和热量单米制马力.时(HP.b)3.725×10-73.653×10-60.986311.3411.559×10-33.93×10-45.05×10-7体积流率单位换算R9/5K米制马力.时(PS.b)3.777×10-73.704×10-611.0141.361.581×10-33.985×10-45.121×10-7米/时(m3/h)1603.6×1032.836×10-21.019×1020.27283米/分(m3/min)1.667×10-21604.72×10-41.6994.546×10-33米/秒(m3/s)2.778×10-41.667×10-317.866×10-62.832×10-27.577×10-53英尺/时(ft3/h)35.312.119×1031.271×10513.6×1039.63230.22713.785×10-36.309×10-58.021重量和质量流率单位换算公斤/秒(kg/s)12.778×10-40.45361.26×10-41.157×10-23.472×10-5公斤/时(kg/h)3.6×10311.633×1030.453641.670.125磅/秒(lb/s)2.2056.124×10-412.778×10-40.025527.656×10-5磅/时(lb/h)7.937×1032.2053.6×103191.860.2756动力粘度单位换算公斤.秒/米(kg.s/㎡)10.1021.02×10-21.02×10-44.882泊(P)或牛顿.秒/米2克/(厘米.秒)(N.s/㎡)[g/(cm.s)]或帕.秒(Pa.s)9.8110.1 10-347.8898.1101 10-2478.8厘 泊(cP)9.81×103 103.. 10 214.788×1041达因.秒/厘米2(dyn.s/c㎡)=1泊(P);1牛顿.秒/米2(N.s/㎡)=1公斤(质)/米.秒[kgm/(m.s)]=3600公斤(质)/米.时[kgm/(m.h)]运动粘度单位换算厘米/2秒(㎡/s)或沲①(St)1 104..2.7789290.258米2/秒(㎡/s) 10-412.778×10-49.29×10-22.58×10-5米3/时(㎡/h)0.363.6×10313.346×1029.29×10-2英尺2/秒(ft2/s)1.076×10-310.762.99×10-312.78×10-41厘沲(cst)=10-2沲(st)功率单位换瓦(W)1千 瓦(KW) 10-3米制马力(PS)1.36×10-3英制马力(HP)1.341×10-310 3735.5745.79.807418710551.35610.73550.74579.807×10-34.1871.0551.356×10-31.3611.0141.333×10-25.6921.4341.843×10-31.3410.986311.315×10-25.6141.4151.82×10-3压力单位换算大气压毫米汞柱 (0英寸汞柱 (0(atm)℃)℃)(标准大气压)(mmHg)(inHg)①9.869×10-60.98690.96786.805×10-211.316×10-33.342×10-29.67×10-52.456×10-37.501×10-3750.1735.651.71760125.47.349×10-21.8672.953×10-429.5328.962.03629.923.937×10-212.893×10-37.349×10-2毫米水柱(15℃)(mmH2O)0.10211.021×1041.001×1047.037×1021.034×10413.613.456×102125.4英寸水柱(15℃)(inH2O4.018×10-3401.8394.127.7407.20.535713.613.937×10-21巴(bar)

热量单位换算千瓦.时(kw.h)2.778×10-72.724×10-60.73550.745711.163×10-32.93×10-43.768×10-7换算英尺/秒(ft3/s)9.81×10-30.588635.312.778×10-412.676×10-33千卡(kcal)2.389×10-42.342×10-3632.5641.2859.810.2523.24×10-4英热单位(Btu)9.478×10-49.295×10-325102544.434123.96811.285×10-3英尺.磅(ft.lb)0.73767.2331.953×1061.98×1062.655×1063.087×103778.21应加仑/分美加仑/分(Imp.gal/min)(U.S.gal/min)3.6672.1998×1021.42×1040.10383.737×10214.4032.642×1021.585×1040.12474.488×1021.2012.228×10-30.83271吨/日(t/d)86.42.4×10-239.191.089×10-213×10-3吨/年(8000小时) (t/a)2.88×10481.306×1043.6293.333×1021磅.秒/英尺(lb.s/ft2)0.20520.9×10-320.9×10-420.9×10-512s/㎡)=1公斤(质)/米.秒英尺2/时(ft2/h)3.8753.875×10410.763.6×1031单位换算公斤.米/秒(kg.m/s)0.102千卡/秒(kcal/s)2.39×10-4英热单位/秒(Btu/s)9.478×10-4英尺.磅 /秒(ft.lb/s)0.73761027576.041426.9107.60.13830.2390.17570.17812.342×10-310.2523.24×10-40.94780.69720.70689.295×10-33.96811.285×10-3737.6542.55507.2333087778.21

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