电伴热-设计与安装

电伴热电伴热-设计与安装设计与安装E=1.2（一般取值为1.2）Q=qtKCE=15.26600.04411.2=48.36W/m即，每米管道热损失为48.36W。保温材料的保温系数、导热系数（10时）表一保温材料保温系数（w/m）导热系数（w/m）玻璃纤维0.036岩棉0.044矿渣棉0.038发泡塑料0.042珍珠岩0.047聚氨脂泡沫塑料0.024聚苯乙烯泡沫塑料0.031硅酸钙0.054复合硅酸盐毡FHP-VB0.0234每米管道每米管道1温差时的热损温差时的热损失失Q表二管径保温层厚度（mm/in）101/2153/4251351-1/2502602-1/275310041/2158.866.735.744.593.943.613.282.953/42010.347.876.565.094.433.943.613.2812512.319.027.555.914.924.434.103.611-1/43214.7710.838.706.735.584.924.593.941-1/24017.0612.3010.017.556.235.584.924.2725019.6914.1111.328.537.056.075.424.762-1/26523.1316.5713.139.687.886.896.075.2538027.5619.3615.2611.169.037.886.895.743-1/29531.0121.8217.0612.3110.018.537.556.23410034.4524.1218.8713.6210.839.198.216.734-1/211537.9026.4120.5114.7711.8110.018.867.22513041.8329.0422.4816.0812.8010.839.527.71615049.2233.9626.2518.5414.6012.3010.668.70820063.1643.1533.1423.1318.2115.0913.1310.661025077.7652.9940.5228.0521.8218.0515.5912.471230091.7062.1847.5832.8125.4321.0017.8814.2714350100.4068.0851.8435.6027.5623.4619.3615.2616400114.277.2758.7340.3631.0125.4321.8217.0618450128.186.4665.7944.9534.4528.2224.1218.8720500141.995.8172.6849.5537.9031.0126.4120.5124600169.6114.286.4658.7344.9537.0831.0124.12管道材料修正系数表三管道材料修正系数碳钢1铜1.05不锈钢0.9塑料0.65阀门及管道附件散热系数（以每米管道散热量为基数）表四名称散热系数法兰0.5蝶阀0.7节流阀0.7球阀0.8球心阀1.2闸阀1.33、确定电伴热带型号、长度、确定电伴热带型号、长度（1）、确定型号规格型号最高伴热温度最高耐温最大使用长度mDBR系列自调温电伴热带7510530DBR系列自调温电伴热带751051000ZBR系列自调温电伴热带1051351000Q总总=QLQ-每米管道的散热量(W/m)L-管道长度4、电伴热带预留长度、电伴热带预留长度法兰：管径的5倍弯头：管径的1.5倍阀门：管径的5倍管架：管径的35倍电源接线盒：预留1米中间接线盒：预留米0.5米4、电伴热带总长、电伴热带总长=电伴热带安全系数注：安全系数（一般取值1.2）6、电伴热带敷设方法、电伴热带敷设方法管道单位长度的散热量（热损失）大于电伴热带额定功率时，即比值1时，按下述方法敷设：a.当比值大于1.5时，采用平行敷设方式，电伴热带长度为管道长度电伴热带根数；b.当比值1.11.5之间时，可采用缠绕敷设方式，缠绕节距见表三，电伴热带长度为管道长度比值。电伴热带缠绕节距电伴热带缠绕节距表三管径每米管道散热量（热损失）与电伴热带额定功率比值1.11.21.31.41.5125017014011010011/431021017014013011/2350240190160140243030024020018021/2520360290240210363043035029026031/2720490390330290480056044037033041/2890610480400350599068055046040061180810650550480815201050840710620二、二、罐体伴热罐体伴热1、散热量计算、散热量计算Q总总=qtKSD（W）Q总总-罐体总散热量(W)q-散热量(W/m2时)TW-维持温度（）TH-环境最低温度（）t-温差TWTHS-罐体的表面积（m2）D-安全系数2、热损失表热损失表每平方米罐体1温差时的热损失Q表四保温层厚度mm10152535506075100热损失q74.849.737.725.118.614.912.69.3注：导热系数为0.25以上热损失基于10%的设计余量，导热系数为0.253.1 电伴伴热带安装位置安装位置3.2 缠绕安装安装3.3 管道支架管道支架3.4 管道三通管道三通3.5 管道弯管道弯头3.6 孔板孔板3.7 管道吊架管道吊架3.8 管道管道焊接支架接支架3.9 地面以下管道地面以下管道3.10 闸阀3.11 球球阀3.12 止回止回阀3.13 外壳外壳泵3.15 过滤器器3.16 水位开关水位开关仪3.17 压力表力表3.18 管道托架管道托架3.19 双向双向电源接源接线盒盒参考价格参考价格