管道保温层厚度的计算方法(史上最全计算).xls

管道保温层厚度的计算方法(史上最全计算).xls

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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保保温温层层经经济济厚厚度度计计算算管道外径（裸管外径）mDo0.108假设保温层厚度m0.127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/mk0.05498保温层单位造价元/mP1400保护层单位造价元/P215保温结构单位造价元/mPT581.9400235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/s0保温层外表面向大气的表面传热系数W/k11.63保温层厚度m0.127D1/Doln（D1/Do）=4.071931838D1/DO3.36附表校核保温层外径mD1j0.36288保温层厚度m0.12744保保温温层层厚厚度度计计算算（控控制制散散热热损损失失）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/mk0.05498查表管道外的風速m/s0保温层外表面向大气的表面传热系数W/k11.63D1/Doln（D1/Do）=1.56D1/DO2.1查表保温层外径mD10.2268保保温温层层厚厚度度mm0.0594保保温温层层厚厚度度m（m（快快速速计计算算）0.102保保温温层层厚厚度度计计算算（控控制制外外表表面面温温度度）管道外径（裸管外径）mDo0.108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/mk0.0539查表管道外的風速m/s0保温层外表面向大气的表面传热系数W/k11.63对于防烫伤，则取8.141D1/Doln（D1/Do）=0.51D1/DO1.43查表保温层外径mD10.15444保温层厚度m0.02322保保温温层层表表面面散散热热损损失失计计算算和和外外表表面面温温度度计计算算管道外径（裸管外径）mDo0.108假设保温层厚度m0.127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/mk10.05498保温层单位造价元/mP1400保护层单位造价元/P215保温结构单位造价元/mPT581.94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/s0保温层外表面向大气的表面传热系数W/k11.63保温层厚度m0.127D1/Doln（D1/Do）=4.07D1/DO3.36附表校核保温层外径mD1j0.363保温层厚度m0.127（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与假设保温层厚度接近，则正确标准：

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对于防烫伤，则取8.141架架空空蒸蒸汽汽管管道道保保温温计计算算一、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mm93.3101.9103.5111.3111.7112.8设计保温层厚度mm111122124133134135地地沟沟敷敷设设蒸蒸汽汽管管道道保保温温计计算算一、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mm9310210411311411445050060070047852963072088890.860.931.021.13320.06346.109379.603420.54080.06560.06560.06560.06563003003003000.0170.0170.0130.011-20-20-20-20716.59768.835886.825980.6310631119.3119.9128.4130.314314315415645050060070047852963072088890.860.931.071.13架架空空蒸蒸汽汽管管道道保保温温计计算算导热系数=0.047+0.00012*（300+10）/2=0.0656W/m.K地地沟沟敷敷设设蒸蒸汽汽管管道道保保温温计计算算导热系数=0.047+0.00012*（300+10）/2=0.0656W/m.K320.06346.109398.211420.54080.06560.06560.06560.06563003003003000.0430.0430.0320.02910101010682.1733.961839.289945.1961175102.0102.5104.6112.6122122125135架架空空热热油油管管道道保保温温计计算算一、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地地沟沟敷敷设设热热水水管管道道保保温温计计算算一、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mm393951515151806550408976574543.53.531861861861860.05970.05970.05970.05973003003003000.0170.0170.0130.01110101010158.67135.4911358101.7780.40634.829.722.417.741352621806550405050505045050060070047852963072088891.661.832.152.44架架空空热热油油管管道道保保温温计计算算地地沟沟敷敷设设热热水水管管道道保保温温计计算算231.67255.3948300.05340.530.05540.05540.05540.05541301301301300.0390.0340.0340.03110101010564.68615.6198384715.54805.1843.343.342.842.652515151xx與與xlnxxlnx函函數數表表（當當x=1x=155時時的的xlnx）xlnx）值值xxxlnxxlnxxxxlnxxlnxxxxlnxxlnxxxxlnxxlnxxx10.0001.420.4992.141.632.863.0023.581.0050.0051.430.5122.151.6482.873.0213.591.010.010051.440.5262.161.6652.883.0453.61.0150.015151.450.5392.171.6812.893.0653.611.020.02021.460.5522.181.6992.93.0853.621.0250.2531.470.5652.191.722.913.1043.631.030.03041.480.582.21.7352.923.133.641.0350.03561.490.5942.211.7562.933.153.651.040.04071.50.6072.221.7712.943.173.661.0450.0461.510.6222.231.7912.953.193.671.050.05121.520.6372.241.8052.963.213.681.0550.05651.530.652.251.8252.973.243.691.060.06171.540.6652.261.8412.983.253.71.0650.0671.550.6792.271.8612.993.273.711.070.07241.560.6952.281.8833.293.721.0750.07771.570.7082.291.8993.013.313.731.080.08311.580.7222.31.923.023.343.741.0850.08851.590.7372.311.9353.033.363.751.090.09461.60.7512.321.9553.043.383.761.0950.09941.610.7652.331.973.053.43.771.10.10481.620.7822.341.993.063.423.781.1050.111.630.7992.352.0073.073.443.791.110.11621.640.8152.362.0273.083.463.81.1150.121.1.650.8272.372.0423.093.483.811.120.127.1.660.8422.382.0623.13.53.821.1250.13271.670.8562.392.083.113.533.831.130.1381.680.8722.42.13.123.553.841.1350.1431.690.8892.412.123.133.573.851.140.14921.70.9022.422.143.143.593.861.1450.15451.710.9162.432.163.153.613.871.150.16071.720.9322.442.183.163.643.881.1550.16651.730.9492.452.1953.173.663.891.160.17211.740.9652.462.2173.183.683.91.1650.17721.750.982.472.2333.193.73.911.170.18461.760.9942.482.2553.23.723.921.1750.1891.771.0112.492.273.213.743.931.180.1951.781.0292.52.293.223.763.941.1850.2011.791.042.512.313.233.783.951.190.2071.81.0592.522.3283.243.813.961.1950.2131.811.0812.532.3443.253.833.971.20.2181.821.0892.542.373.263.853.981.2050.251.831.1082.552.3853.273.883.991.210.231.841.1212.562.4053.283.941.2150.2361.851.1382.572.4253.293.924.011.220.2421.861.1522.582.4443.33.944.021.2250.2451.871.1692.592.4623.313.964.031.230.25451.881.1852.62.483.323.984.041.2350.2611.891.2052.612.5033.3344.051.240.2661.91.222.622.5213.344.034.061.2450.2721.911.2342.632.543.354.054.071.250.2791.921.2512.642.563.364.074.081.2550.2851.931.272.652.583.374.094.091.260.2911.941.2882.662.63.384.124.11.2650.2981.951.3022.672.623.394.144.111.270.341.961.3182.682.643.44.164.121.2750.3091.971.3352.692.663.414.184.131.280.3161.981.3512.72.683.424.24.141.2850.3221.991.3692.712.73.434.234.151.290.32821.3862.722.723.444.254.161.2950.3342.011.4012.732.743.454.274.171.30.342.021.4192.742.763.464.34.181.310.3542.031.4392.752.783.474.324.191.320.3672.041.4552.762.83.484.344.21.330.382.051.4712.772.823.494.364.211.340.3892.061.4882.782.843.54.384.221.350.4052.071.5072.792.863.514.44.231.360.4172.081.522.82.883.524.424.241.370.4322.091.5422.812.9013.534.454.251.380.4452.11.5592.822.9213.544.474.261.390.4572.111.5792.832.943.554.54.271.40.472.121.5922.842.9613.564.524.281.410.4852.131.612.852.983.574.554.29xlnxxlnxxxxlnxxlnx4.574.36.274.594.316.294.624.326.324.644.336.354.664.346.384.684.356.44.714.366.424.734.376.444.754.386.464.774.396.484.84.46.524.824.416.544.844.426.574.864.436.64.884.446.624.914.456.644.934.466.674.964.476.74.984.486.7254.496.745.034.56.775.054.516.795.074.526.815.094.536.835.124.546.865.154.556.95.174.566.925.194.576.945.214.586.975.244.596.995.264.67.025.284.617.055.314.627.075.334.637.15.354.647.1253.74.657.145.44.667.165.434.677.195.454.687.215.474.697.245.54.77.265.534.717.285.554.727.325.574.737.355.64.747.385.624.757.45.644.767.425.664.777.455.684.787.475.714.797.55.744.87.525.764.817.555.784.827.585.814.837.65.834.847.635.854.857.655.884.867.685.914.877.75.934.887.735.954.897.765.984.97.786.014.917.86.034.927.836.054.937.856.074.947.866.14.957.96.134.967.926.154.977.956.174.9886.194.998.026.2258.056.25附附表表2:

2:

保保溫溫層層平平均均溫溫度度tptp周遭空氣溫度（）介質溫度10015020025030035040025709512515017520523015659012014517020022506080110135160190215-155575105130155185210附附表表3-1:

3-1:

季季節節運運行行工工況況允允許許最最大大散散熱熱損損失失設備、管道及附件外表面溫度50100150200250300允許最大散熱損失116163203244279308附附表表3-2:

3-2:

常常年年運運行行工工況況允允許許最最大大散散熱熱損損失失設備、管道及附件外表面溫度323（50）373（100）423（150）473（200）523（250）573（250）允許最大散熱損失5893116140163186附附表表4:

4:

保保溫溫層層表表面面熱熱阻阻公稱直徑（mm）室內室外介質溫度t（）介質溫度t（）100200300400500100200300圓筒面放熱阻力R2（m2K/w）250.3010.2580.2150.1980.1890.1030.0950.086320.2750.2320.1980.1630.1380.0950.0860.077400.2580.2150.1810.1550.1290.0860.0770.069500.1980.1630.1380.120.1030.0690.060.0521000.1550.1290.1120.0950.0770.0520.0430.0431250.1290.1120.0950.0770.0690.0430.0340.0341500.1030.0860.0770.0690.060.0340.0260.0262000.0860.0770.0690.060.0520.0340.0260.0262500.0770.0690.060.0520.0430.0260.0170.0173000.0690.060.0520.0430.0430.0260.0170.0173500.060.0520.0430.0430.0430.0170.0170.0174000.0520.0430.0430.0340.0340.0170.0170.0175000.0430.0340.0340.0340.0340.0170.0170.0176000.0360.0340.0320.030.0280.0140.0130.0137000.0330.0310.0290.0280.0260.0130.0120.0118000.0290.0280.0250.0250.0230.0110.010.019000.0260.0250.0250.0220.0220.010.0950.09510000.0230.0220.0220.0210.0210.0090.0860.08620000.0140.0130.0120.0110.010.0050.0040.004623（350）2094005000.0770.0770.0690.060.060.0520.0430.0430.0340.0340.0260.0260.0260.0260.0170.0170.0170.0170.0170.0170.0170.0170.0170.0170.0170.0170.0120.0110.010.010.0950.0950.0860.0860.0080.008介質溫度t（）0.0040.004保保温温材材料料参参考考标标准准说明：

1、导热系数越小越好。

2、氧指数：

一般认为氧指数22属于易燃材料，氧指数在22-27之间属可燃材料，氧指数27属难燃材料。

3、无机墙体保温砂浆：

新型保温材料，耐火等级