罐体及管道热损耗、保温、加热电伴热计算教程(共7页)

1、精选优质文档-倾情为你奉上罐体及管道热损失及保温、加热计算篇（电伴热计算公式及参数表查询）电伴热计算公式及参数表查询管线散热量计算 1、查表计算法 (1) 求单位长度管道标准散热量QbT=Tj-T0  Tj (介质工艺温度)T0（环境最低温度）根据DN、T、三个参数查“表3-1”，可得室外单位长度金属管道的标准热散失量Qb。表3-1：管道散热量（Qb）条件：碳钢管道、玻璃纤维保温、室外、风速9m/s。单位：w/m保温厚度温差T管道内径(mm/英寸)Pipeline internal diameter   DN1525405080100

2、1502002503003504004505006001/2"1"1.5"2"3"4"6"8"10"12"14"16"18"20"24"10207.210.113.616.423.028.841.152.664.776.183.394.6105.9117.2139.73011.015.420.724.935.043.862.580.098.5115.8126.7143.9161.1178.3212.64014.920.827.933.747.35

3、9.284.5108.2133.2156.6171.3194.6217.9241.1287.420204.66.28.09.513.016.022.528.534.940.944.750.756.762.674.6307.09.412.214.519.824.434.343.452.262.368.077.186.295.3113.4409.512.716.519.626.733.046.358.771.984.292.0104.3116.6128.9153.46014.719.625.530.241.250.971.490.5110.8129.9141.8160.8179.7198.7236

4、.525204.15.36.98.110.913.418.623.528.733.536.541.446.251.160.7306.28.110.412.316.620.328.335.743.651.055.663.070.377.792.4408.411.014.116.622.427.538.248.359.069.075.285.295.1105.1124.96012.917.021.825.634.542.459.074.590.9106.3115.9131.3146.7162.0192.68017.723.329.935.147.458.281.0102.3124.8146.015

5、9.2180.3201.4222.4264.510022.830.138.645.461.275.2104.5132.0161.1188.5205.5232.8260.0287.2341.5 30203.74.86.17.19.511.615.920.024.428.531.031.539.243.251.3305.67.39.210.814.417.624.330.537.143.347.253.459.665.878.1407.69.812.514.619.523.832.841.350.258.663.872.280.688.9105.66011.715.119.222.530

6、.036.650.663.677.490.498.4111.4124.3137.1162.98016.020.826.430.941.250.369.487.3106.3124.0135.1152.9170.6188.3223.610020.726.834.139.853.265.089.7112.8137.2160.2174.5197.4220.3243.1288.712025.633.242.249.365.980.4111.0139.6169.9198.3216.1244.4272.8301.0357.514030.840.250.859.479.396.8133.5168.0204.4

7、239.6259.9294.0328.1362.1430.116036.247.159.869.993.3113.9157.2197.7240.6280.8306.0346.1386.2426.3506.218042.054.569.280.9108.1131.9182.0228.9278.6325.3354.2400.7447.1493.5586.240203.24.05.05.87.69.212.615.719.022.124.027.430.233.039.4304.86.17.78.911.614.119.123.928.933.636.641.345.950.660.0406.58.

8、310.412.015.719.025.932.339.145.549.455.862.168.581.16010.112.816.018.524.329.339.949.860.370.176.286.095.8105.6125.18013.817.621.925.433.340.254.868.482.796.2104.6118.1131.5144.9171.710017.822.728.332.843.052.070.888.3106.8124.2135.1152.4169.8187.1221.712021.128.135.140.653.364.487.6109.3132.3153.9

9、167.3188.8210.3231.7274.514026.533.842.248.864.177.4105.4131.5159.1185.1201.2227.1252.9278.7330.216031.239.849.757.475.491.1124.1154.8187.3217.9236.9267.3297.7328.1388.718036.246.057.566.587.3105.5143.7179.3216.9252.2274.3309.5344.7379.9450.1 50202.83.64.45.06.57.810.513.115.718.219.822.324.727

10、.232.2304.35.46.77.79.911.916.019.923.927.730.133.937.641.448.5405.97.39.110.413.416.121.726.932.337.540.745.850.956.066.2609.011.314.016.020.724.833.441.449.957.862.770.678.586.3102.18012.415.519.122.028.534.145.956.868.479.386.196.9107.7118.5140.110016.020.124.728.436.744.059.273.488.3102.4111.112

11、5.1139.1153.0180.912019.824.830.635.145.554.473.390.9109.4126.8137.6154.9172.2189.5224.014023.829.936.842.354.765.688.2109.3131.6152.5165.5186.4207.2227.9269.416028.235.243.449.864.477.2103.9128.7154.9179.5194.9219.4243.9268.3317.218032.540.750.257.674.689.4102.3149.0179.4207.9225.6254.0282.4310.736

12、7.280202.32.83.43.84.85.77.49.010.712.313.314.916.418.021.1303.54.35.25.87.38.611.313.716.318.720.222.625.027.432.1404.85.87.07.99.911.615.218.522.025.327.330.633.837.043.5607.49.010.812.115.317.923.528.634.039.042.147.152.157.167.08010.112.314.816.620.924.632.239.246.653.554.864.771.578.392.010013.

13、015.919.121.527.031.841.650.660.269.174.683.592.3101.2118.812016.119.723.626.633.539.351.562.774.585.592.4103.4114.3125.3147.114019.423.628.432.040.347.362.975.489.6102.9111.2124.4137.5150.7176.916022.927.833.437.747.455.772.988.8105.5121.1130.9146.4161.9177.4208.318026.532.238.743.754.964.584.4102.

14、8122.2140.3151.5169.5187.5205.4241.2(2) 求单位长度管道的实际热散失量Qs计算公式：Qs = K1 · K2 · K3 · Qb ·················· (3-1)Equation Qs = K1 · K2 · K3 · Qb ······

15、3;··········· (3-1)式中：Qs - 单位长度管道的实际热散失量W/mQb - 单位长度管道的标准热散失量W/mK1 - 保温材料导热系数修正系数值K2 - 管道材料修正系数K3 - 环境条件修正系数表3-2：保温材料导热系数及保温修正系数K1保温材料10导热系数(W/m· k)保温修正系数K1超细玻璃纤维（管壳、棉毡）0.0361.0岩棉（管壳、棉毡）0.0441.22复合硅酸盐0.0350.97聚氨酯泡沫塑料0.0240.67矿渣棉0.0381.06硅酸铝

16、0.0561.56珍珠岩管壳0.0471.31硅酸钙0.0541.50石棉松绳0.0842.33泡沫石棉0.040.0481.111.33聚乙烯泡沫塑料0.0350.97表3-3: 管道材料修正系数K2管道材料修正系数K2碳钢1.0铜0.9不锈钢1.25塑料1.5 表3-4: 环境条件修正系数K3环境条件修正系数K3室外风速1.10室外风速1.0室外风速0.95室内0.9 2、公式计算法 管道热损失计算公式      2兀(Tj To）Qs- . （3-2）    

17、  ln（d+2）÷d式中：Qs管道实际散热量，Kcal/h·m或W/mTj介质维持温度，T0冬天最低温度，在介质维持温度时保温材料的导热系数，Kcal/h·m·或W/m·d管道外径，mm保温层厚度，mm3、储罐和容器散热量计算 (1) 求容器或罐体的总表面积S、m2a.二端为平面的圆柱容器：S=D（R+H）S-总表面积m2D-容器外径mR-容器半径mH-容器高度mb. 二端为半球的圆柱容器：S=D（2R+H）H-为圆柱部分的高度c矩形容器：S=(长×宽)+(长×高)+(宽×高) &#

18、215;2; m2(2) 根据保温层材质、厚度、安装地点的最低温度和介质维持温度查“表3-5”，求出容器罐体单位面积上的热损失量Q0，Wm2。如果采用非表列的保温材料，则先按“玻璃纤维”查取Q0，再按“表3-2”修正。(3) 求总热损失量QZQZ=（1.41.6）Q0·S （3-3），W式中：Q0 单位面积上的热损失量，Wm2，由“表3-5”查取。S总散热表面积，m2。(4) 计算所需电伴热带长度LyLy = Qy / P0+Lw（3-4）式中：Qy容器总散热量，W，由公式3-4求得。P0能适用于介质最高维持温度电热带的米功率，W /m，选用时查表2-1表2-3。Lw安装用长度，视各

19、种接线盒总数定，一般每个接线盒线头留1m左右长度。表3-5：容器罐体散热量（Q0）保温层维持温度()   条件材料厚度mm Thickness5102030405060708090100120聚氨酯3822.31125.0830.7936.7743.0249.5556.3863.5270.9878.7786.91104.18温度-40风速15m/s最低环境温度5017.2519.3923.8128.4333.2738.3243.6149.1454.1960.9567.2080.637511.7113.1616.1619.3022.5826.0229.6133.37

20、37.2941.3945.6854.821008.869.9612.2314.6117.0919.6922.4125.2928.2531.3634.6041.511257.148.029.8511.7613.7715.8618.0520.3422.7325.2427.8533.431505.966.708.239.8411.5213.2715.1017.0219.0221.1123.3027.97玻璃纤维3835.9140.1548.7957.7766.8976.3986.0295.92106.08116.63127.38149.775028.0731.3938.1445.0852.2059.

21、6267.1474.8782.8191.0699.46116.977519.2721.5426.1830.9535.9040.9346.1051.4156.8762.4968.3180.3610014.6416.4319.9723.6027.3331.1635.0939.1743.3747.6552.0561.2412511.8613.2616.1219.0522.0625.1628.3831.6635.0238.4842.0349.451509.9211.0913.5315.9918.5221.1223.7926.5329.3532.2535.2341.45矿渣棉3844.1449.3259

22、.9570.8381.8193.19104.61116.36128.34140.42152.17178.085034.6538.7247.1655.6264.2573.1982.1791.32100.74110.23120.01139.867523.9926.8132.5338.4444.4950.5956.8163.1469.5976.2382.9396.7610018.3420.4924.8629.3834.0138.6743.4348.2753.2158.2463.4173.9312514.8316.5720.1823.8027.5031.2735.1239.1143.1147.1951

23、.3459.8615012.5113.9716.9620.0023.1126.2829.5132.8136.1739.6243.1150.26硅酸钙3852.6259.0072.3885.9699.95114.59129.45114.73160.56176.68193.21227.485041.6346.6957.0767.9279.0190.95102.37114.49126.94139.70152.84180.067528.9532.4739.7747.3455.0863.0671.2879.7488.4497.38106.55125.6110022.2624.9730.5336.2842

24、.2148.3454.7461.2467.9374.8181.8796.5412518.0220.2224.7229.4334.3139.2944.4249.7055.1360.7266.4578.3815015.1617.0020.8724.8228.8633.0537.3741.8146.3951.0855.9265.96聚氨酯387.8710.6116.3022.3528.6135.1742.0449.2356.8364.7072.8690.13温度-10风速15m/s506.048.2212.6217.3022.1627.2432.5638.1344.0350.1356.4670.06

25、754.145.588.5811.8015.0618.5522.1825.9729.9434.1038.4447.711003.124.216.528.9111.4514.0716.8319.7122.7225.8729.1736.201252.513.435.277.209.2211.3413.5615.8818.3120.8523.4729.141502.132.874.416.027.719.4811.3313.2715.3017.4519.6724.40玻璃纤维3812.1316.4225.1634.0043.2552.6162.2472.2782.4792.95103.72126.3

26、1509.5312.7919.6126.6133.7241.1848.7256.4764.4572.6581.1598.85756.588.8313.5318.2923.2628.3133.4938.8343.3150.0555.8668.001005.066.7910.3213.9517.6821.6025.5629.6333.8238.1242.5651.811254.075.468.3711.3114.3417.4520.6423.9327.3230.8034.3841.891503.404.577.009.4611.9914.5617.3420.1022.9425.8628.8735.

27、15矿渣棉3815.0120.1230.5141.2752.3363.5775.0576.6398.41110.62122.84148.065011.6515.8824.0732.5741.1449.9759.0168.1277.3987.0096.63116.49758.2111.0116.6922.4928.5234.5840.8447.1553.6860.2366.9180.611006.238.3512.7717.2721.8226.4631.2436.0741.0746.0951.2061.691255.106.8410.3713.9717.6521.4825.3829.2433.2

28、237.2941.4249.961504.275.728.6811.7914.8918.0621.2924.5827.9331.3542.8242.00硅酸钙3818.1324.3937.3950.9064.8279.2193.88109.18124.71140.78157.28191.245014.3819.3529.6640.3951.3462.7574.5486.5498.87111.64124.76151.797510.0213.4920.7628.1635.9543.8652.0260.0269.1778.0587.17106.121007.7510.4315.9221.6927.5

29、833.7240.0046.5453.1960.0467.0681.661256.258.4212.9517.5822.4427.3832.4837.8043.2148.7554.4866.351505.337.1710.9414.8518.8823.0527.3931.8236.3741.0545.8655.86聚氨酯38   5.4711.6117.8722.4431.3338.5746.1554.1071.12温度+20 无风速50   4.359.0813.9719.1124.5030.2736.2242.4655.8175&

30、#160;  3.046.239.5913.2216.9420.8524.9529.2438.43100   2.294.787.3610.0612.8915.9819.0522.3229.34125   1.843.906.008.2010.5112.8415.4118.0623.73150   1.543.265.016.858.7810.8112.9315.1519.90玻璃纤维38   8.2316.7125.4534.4543.7353.3063.4173.6194.9550   6.3713.1620.0527.3234.7442.3350.1658.4575.4075   4.489.2614.1019.082