管道保温层厚度的计算方法(史上最全计算)

标准：锅炉房设计规范、设备及管道绝热技术通则、设备及管道绝热设计导则、动力管道设计手册、工业锅炉经济运行、锅炉节能技术监督管理规程管道外径(裸管外径)mDo0.108假设保温层厚度mδ0.127设备或管道外表面温度℃T250环境温度℃Ta12年运行时间ht8000单位换热系数A10.0018975保温层外径（两层时为内层保温层外径）mD10.362热价元/GJPE16保温材料制品热导率W/mkλ0.05498保温层单位造价元/m³P1400保护层单位造价元/㎡P215保温结构单位造价元/m³PT581.9400235年利率%（复利率）i10%计息年数年n7保温工程投资贷款年分摊率%（复利计算）S0.2054055管道外的風速m/sω0保温层外表面向大气的表面传热系数W/㎡kɑ11.63保温层厚度mδ0.127D1/Do×ln(D1/Do)=4.071931838D1/DO3.36附表校核保温层外径mD1j0.36288保温层厚度mδ0.12744管道外径(裸管外径)mDo0.108设备或管道外表面温度℃T250环境温度℃Ta12保温层内外表面平均温度℃Tm131富裕系数K0.9允许散热损失w/㎡Q163保温材料制品热导率W/mkλ0.05498查表管道外的風速m/sω0保温层外表面向大气的表面传热系数W/㎡kɑ11.63D1/Do×ln(D1/Do)=1.56D1/DO2.1查表保温层外径mD10.2268保温层厚度mδ0.0594保温层厚度m(快速计算)δ0.102管道外径(裸管外径)mDo0.108保温层经济厚度计算保温层厚度计算（控制散热损失）保温层厚度计算（控制外表面温度）设备或管道外表面温度℃T200环境温度℃Ta25假设保温层外表面温度℃Ts50保温层内外表面平均温度℃Tm125保温材料制品热导率W/mkλ0.0539查表管道外的風速m/sω0保温层外表面向大气的表面传热系数W/㎡kɑ11.63对于防烫伤，则取8.141D1/Do×ln(D1/Do)=0.51D1/DO1.43查表保温层外径mD10.15444保温层厚度mδ0.02322管道外径(裸管外径)mDo0.108假设保温层厚度mδ0.127设备或管道外表面温度℃（介质温度）T250环境温度℃Ta12年运行时间ht8000单位换热系数A10.0018975保温层外径（两层时为内层保温层外径）mD10.362热价元/GJPE16内层保温材料制品热导率W/mkλ10.05498保温层单位造价元/m³P1400保护层单位造价元/㎡P215保温结构单位造价元/m³PT581.94年利率%（复利率）i10%计息年数年n7保温工程投资贷款年分摊率%（复利计算）S0.21管道外的風速m/sω0保温层外表面向大气的表面传热系数W/㎡kɑ11.63保温层厚度mδ0.127D1/Do×ln(D1/Do)=4.07D1/DO3.36附表校核保温层外径mD1j0.363保温层厚度mδ0.127(T-Ta)/Do2203.70单层散热损失w/㎡Q58.26单位管道长度散热损失w/mq66.22保温层外表面温度℃Ts17.01保温层表面散热损失计算和外表面温度计算标准：锅炉房设计规范、设备及管道绝热技术通则、设备及管道绝热设计导则、动力管道设计手册、工业锅炉经济运行、锅炉节能技术监督管理规程与假设保温层厚度接近，则正确对于防烫伤，则取8.141一、保温计算：硅酸铝容重：380kg/m3蒸汽介质温度：按3000C导热系数=0.047+0.00012tpjtpj：管道内热介质和周围空气温度的平均值，周围空气温度取大值，10对蒸汽：导热系数=0.047+0.00012*(300+10)/2=0.0656W/m.K对蒸汽管道(架空）150200250300350400外径mm159219273325377426壁厚mm4.566888允许每米热损失qkcal/m.h.K0.450.530.620.670.750.82允许每米热损失qW/m167.47197.24230.7249.35279.12305.17导热系数W/m.K0.06560.06560.0660.06560.06560.0656蒸汽介质温度oC300300300300300300管道外表面热阻m.K/W0.0260.0260.0170.0170.0170.017周围空气温度oC-20-20-20-20-20-20保温壳外径计算Dwmm345.63422.72480547.59600.37651.59保温壳厚度mm93.3101.9#####111.3111.7112.8设计保温层厚度mm111122124133134135一、保温计算：硅酸铝容重：380kg/m3蒸汽介质温度：按3000C导热系数=0.047+0.00012tpjtpj：管道内热介质和周围空气温度的平均值，周围空气温度取大值，10对蒸汽：导热系数=0.047+0.00012*(300+10)/2=0.0656W/m.K对蒸汽管道(地沟,周围空气温度10度）150200250300350400外径mm159219273325377426壁厚mm4.566888架空蒸汽管道保温计算地沟敷设蒸汽管道保温计算允许每米热损失qkcal/m.h.K0.450.530.620.670.750.83允许每米热损失qW/m167.47197.24230.7249.35279.12308.89导热系数W/m.K0.06560.06560.0660.06560.06560.0656蒸汽介质温度oC300300300300300300管道外表面热阻m.K/W0.0770.0690.060.0520.0430.043周围空气温度oC101010101010保温壳外径计算Dwmm314.37390.08447513.65568.25616.15保温壳厚度mm77.785.587.094.395.695.1设计保温层厚度mm93102104113114114导热系数=0.047+0.00012*(300+10)/2=0.0656W/m.K45050060070047852963072088890.860.931.021.13320.06346.109379.603420.54080.06560.06560.06560.06563003003003000.0170.0170.0130.011-20-20-20-20716.59768.835886.825980.6310631119.3119.9128.4130.3143143154156导热系数=0.047+0.00012*(300+10)/2=0.0656W/m.K4505006007004785296307208889架空蒸汽管道保温计算地沟敷设蒸汽管道保温计算0.860.931.071.13320.06346.109398.211420.54080.06560.06560.06560.06563003003003000.0430.0430.0320.02910101010682.1733.961839.289945.1961175102.0102.5104.6112.6122122125135一、保温计算：硅酸铝容重：75kg/m3热油介质温度：按3000C保温外表面40导热系数=0.038+0.00014tpjtpj：管道内热介质和周围空气温度的平均值，周围空气温度取大值，10对蒸汽：导热系数0.0597W/m.K对热油管道(架空）150200250300125100外径mm159219273325133108壁厚mm4.567844允许每米热损失qW/m186186186186186186导热系数W/m.K0.05970.05970.05970.05970.05970.0597热油介质温度oC300300300300300300管道外表面热阻m.K/W0.0260.0260.0170.0170.0170.017周围空气温度oC101010101010保温壳外径计算Dwmm282.51389.11486.7579.4237.109192.54保温壳厚度mm61.885.1106.8127.252.142.3设计保温层厚度mm741021281526250导热油管径DN300250200150125100设计保温层厚度mm15015015010010050一、保温计算：硅酸铝容重：380kg/m3热水介质温度：按1300C导热系数=0.047+0.00012tpjtpj：管道内热介质和周围空气温度的平均值，周围空气温度取大值，10对热水：导热系数=0.047+0.00012*(130+10)/2=0.0554W/m.K对热水管道(地沟,周围空气温度10度）150200250300350400外径mm159219273325377426壁厚mm4.566888架空热油管道保温计算地沟敷设热水管道保温计算允许每米热损失qkcal/m.h.K0.791.041.011.171.341.5允许每米热损失qW/m110.25145.14140.96163.29187.01209.34导热系数W/m.K0.05540.05540.05540.05540.05540.0554蒸汽介质温度oC130130130130130130管道外表面热阻m.K/W0.0860.0770.0690.060.0520.043周围空气温度oC101010101010保温壳外径计算Dwmm225.35284.27358.4411.02462.849512.3保温壳厚度mm33.232.642.743.042.943.2设计保温层厚度mm393951515151806550408976574543.53.531861861861860.05970.05970.05970.05973003003003000.0170.0170.0130.01110101010158.67135.4911358101.7780.40634.829.722.417.74135262180655040505050504505006007004785296307208889架空热油管道保温计算地沟敷设热水管道保温计算1.661.832.152.44231.67255.3948300.05340.530.05540.05540.05540.05541301301301300.0390.0340.0340.03110101010564.68615.6198384715.54805.1843.343.342.842.652515151xx‧lnxxx‧lnxxx‧lnxxx‧lnxx10.0001.420.4992.141.632.863.0023.581.0050.0051.430.5122.151.6482.873.0213.591.010.010051.440.5262.161.6652.883.0453.61.0150.015151.450.5392.171.6812.893.0653.611.020.02021.460.5522.181.6992.93.0853.621.0250.2531.470.5652.191.722.913.1043.631.030.03041.480.582.21.7352.923.133.641.0350.03561.490.5942.211.7562.933.153.651.040.04071.50.6072.221.7712.943.173.661.0450.0461.510.6222.231.7912.953.193.671.050.05121.520.6372.241.8052.963.213.681.0550.05651.530.652.251.8252.973.243.691.060.06171.540.6652.261.8412.983.253.71.0650.0671.550.6792.271.8612.993.273.711.07