總傳熱系數(shù)經(jīng)驗值

1、熱側(cè)冷側(cè)清潔表面的K值考慮到常見污垢情況下的K值自然對流強制對流自然對流強制對流1、加熱時應用蒸汽水溶液142018401700312057011408501560蒸汽輕油280400625790270260340620蒸汽中質(zhì)潤滑油230340570738200230280570蒸汽6號柴油11023040051085170340460蒸汽焦油或瀝青8520028040085140220340蒸汽熔融蠟200260260310110200200260蒸汽熔融蠟200260260310140200200280蒸汽空氣或氣體10-2028-365-1723-45蒸汽糖蜜或谷物糖漿11022040

2、051085170340460高溫熱水水溶液65080011001420400570620910高溫傳熱油焦油或瀝青7017026037057110170280導熱姆或亞老哥爾焦油或瀝青85170280340681141702802、冷卻時應用水水溶液62077011101390370540600880水淬火油57-8514026040-5785140水中質(zhì)潤滑油45-6811017028-4557110水糖蜜或谷物糖漿40-5710015023-4045-85水空氣或氣體11-2328-576-1823-46氟利昂或氨水溶液200260340510110200230340鈣或鈉鹽水水溶液57

3、06809901140280430460710夾套內(nèi)的流體容器內(nèi)的流體傳熱壁材料K值夾套內(nèi)的流體容器內(nèi)的流體傳熱壁材料K值蒸汽水不銹鋼8501700蒸汽水玻璃襯里碳鋼400570蒸汽水溶液不銹鋼4501140蒸汽水溶液玻璃襯里碳鋼285480蒸汽有機液不銹鋼285850蒸汽有機液玻璃襯里碳鋼170400蒸汽輕油不銹鋼340910蒸汽輕油玻璃襯里碳鋼230425蒸汽重油不銹鋼57285蒸汽重油玻璃襯里碳鋼57230鹽水水不銹鋼2301625鹽水水玻璃襯里碳鋼170450鹽水水溶液不銹鋼200850鹽水水溶液玻璃襯里碳鋼140400鹽水有機液不銹鋼170680鹽水有機液玻璃襯里碳鋼115340鹽水

4、輕油不銹鋼200740鹽水輕油玻璃襯里碳鋼140370鹽水重油不銹鋼57170鹽水重油玻璃襯里碳鋼57170傳熱油水不銹鋼2851140傳熱油水玻璃襯里碳鋼170450傳熱油水溶液不銹鋼230965傳熱油水溶液玻璃襯里碳鋼140400傳熱油有機液不銹鋼170680傳熱油有機液玻璃襯里碳鋼140370傳熱油輕油不銹鋼200740傳熱油輕油玻璃襯里碳鋼115400傳熱油重油不銹鋼57230傳熱油重油玻璃襯里碳鋼57200冷凝K值液體冷卻K值氣體冷卻操作壓力kPa(表壓)壓力降kPaK值氨625機器夾套水710空氣或煙道氣3450.73.557氟禾J昂-12400柴油14069013.8110汽油4

5、60輕瓦斯油37069034170輕碳氫化合物510輕碳氫化合物480碳氫化合物氣體2417200430輕石腦油40086221200重心腦油370重整爐液流400690034460重整反應器廢氣400殘油85氨反應器流體480低壓蒸汽770焦油40塔頂蒸汽370四、各蒸發(fā)器的總傳熱系數(shù)蒸發(fā)器形式總傳熱系數(shù)W/（m2.K夾套式35023305803000水平管式（蒸汽管內(nèi)冷凝）5802330水平管式（蒸汽管外冷凝）5804700中央循環(huán)管式5803000帶攪拌的中央循環(huán)管式12005800懸隹式5803500旋液式9301750強制循劃、型12007000傾斜管式9303500升膜式58058

6、00降膜式12003500外加熱式12005800刮膜式（粘度1100cP）17507000刮膜式（粘度100010000Cp）7001200疊片離心式35004700裳10*8套式排熱用作冷卻時的不值而，冷卻物料冷卻對傳電M材料總鈴絡系敷KW/(m*C)*.備隹水水1745-2900水處水8S01700，內(nèi)，外震速為0915-2.44m/CO1水fl530裳10*9套式捶熱。用作加熱時的K值為:被加熱科加*1介朋伸能面材料8傳熊系敷KWAm1eC)備注水熱水7702440水減逮0.530m/$熊水流速0.52.5m/$次.空氣焦水銅140430裳1JJ10套式換母用作熱交投時的K值范X交換物

7、料熱交換介質(zhì)傳培面材料總傳熱系數(shù)KW/(m2eC)備注水赴水8701745管內(nèi).外流速l.25m/s水拉水%290-2330水源速03-l5m/s注水源速03l0m/s液體液體815174520%扶陵35%拄，石5801045套式階型丁烷水525丁坡施遮0.6mA水濾速hn/s碳氧化合物熱水230-500管內(nèi)為熱水油類液體10S-815原油石油210-280原油流速13-2lm/s出清油水87M*Nl0.0Sm/s水海速0an/s燈油水230燈油流速O.lSm/6水次速06m/*10-4-11套式換筋用作冷時的K值范冷凝物料冷卻制傳熱聞材料.總傳為系數(shù)KW/(m,。備注氮蒸氣水1280-198

8、0水流速L2m/s氮蒸氣水1630-2330水流速L8m/s找蒸氣水1980-2675水流速24m/s鋼及有色金屬的熱導率W/(m-C)類別溫度，c0100200300400500600700800900100011001200低碳鋼55.652.748.5445.040.837.134.230.127.32.7.728.5298中碳鋼49.348.145.64；2.439.135.732.426.226.026.928.029.5高碳鋼-46.5/44.040.83-7.735.032.329.224.125.22.6.5277.9294銘鋼44.842.239.336.4-32.6-26.7-鉆鋼41.5,40.038.837.035.234.330.9)26.4-銘硅鋼-38.7-35.933.532.61-26.7-銘銳鋼41.541.539.439.036.334.933.732.6-銘鋁鋼43.841.941.33).436.532.329.8；29.128.5-銘鴇鋼52.348.7-45.441.9-銘鍥鋼38.437.936.8365.834