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三、保温层厚度的计算1.经济厚度.采用厚度大的保温材料,保温效果好,单位时间的热损失小,热量损失费用减少;但同时保温材料消耗量增加,投资费用增加.二者相加所得总费用最小时的厚度,称为经济厚度.①保温层费用c_1(元).c_1=cδF,式中:保温结构单位造价c(元/米~3);保温层厚度δ)米);保温层总面积F(米~2),如为圆管时,F为保温层内外面积的平均值.
Third, the insulation layer thickness calculation 1. Economic thickness. The use of thick insulation materials, insulation effect is good, a small amount of heat loss per unit of time, heat loss costs are reduced; but at the same time increase the consumption of insulation materials, investment costs increase. The thickness at which the total cost obtained is the minimum, referred to as the economic thickness. 1 The cost of insulation layer c_1(yuan).c_1=cδF, where: thermal insulation structure unit cost c (yuan/m~3); insulation thickness δ) m) The total area of insulation layer F (m~2), if it is a round pipe, F is the average value of the inside and outside area of the insulation layer.