论文部分内容阅读
3.常用保温材料。对于动力、采暖、供暖及一般用热的工业部门(不包括工业炉窑和锅炉的内衬等),已如前述,要求保温材料的导热系数在热表面温度等于650℃时不得大于0.139w/m·℃如果取保温材料的冷面温度为50℃,即在平均温度为(650+50)/2=350℃时,导热系数不得大于0.139w/m·℃。这样的一个要求还是比较高的,对于泡沫混凝土、草绳、石棉绳等导热系数超过规
3. Common insulation materials. For the industrial sectors of power, heating, heating and general heat (excluding the lining of industrial furnaces and boilers, etc.), as previously mentioned, the thermal conductivity of the insulating material shall not be greater than 0.139 W at the hot surface temperature equal to 650°C. m·°C If the temperature of the cold surface of the insulating material is 50°C, that is, when the average temperature is (650+50)/2=350°C, the thermal conductivity must not be greater than 0.139w/m·°C. Such a requirement is still relatively high, and the thermal conductivity of foamed concrete, straw ropes, and asbestos ropes exceeds regulations.