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一、建筑物的各项费用和经济热阻建筑物的费用可分为建造费用和使用费用。这两大费用中,作为一次投资,建造费用的绝对值看上去很大,但使用费用,其中特别是供暖费用实际上是一个更大的数值。尽管每一年它的数值不很大,但在建筑物的折旧年限内,它是一个比建造费用大得多的数值。例如哈尔滨地区一平方米490毫米的红砖外墙的建造费用仅是使用费用的十六分之一。在北方地区改善建筑物的保温,加大外围护结构的热阻,可以使供暖费用下降,也可使建造费用中供暖系统的建造费用下降,但是改善保温,加大热阻并不是无限度的,因为它将会增大建造费用中外围护结构的建造费用。因此肯定存在着一个使建
First, the various costs of buildings and economic thermal resistance The cost of buildings can be divided into construction costs and usage costs. Of these two major expenses, the absolute value of the construction cost may appear to be large as an investment, but the use cost, in particular, the heating cost is actually a larger value. Although its value is not very large every year, it is a much larger value than the construction cost during the depreciation period of the building. For example, the construction cost of a 490 mm-square red brick external wall in Harbin is only one-sixteenth of the operating cost. To improve the insulation of buildings in the northern region and increase the thermal resistance of the external protection structure can reduce the heating costs and reduce the construction cost of the heating system. However, improving insulation and increasing thermal resistance are not unlimited. Because it will increase the construction cost of the external protective structure. So there must be a construction