关键词: 区域供能, 管网, 散热损失, 埋设深度, 土壤温度, 地表温度

Abstract: The calculation method of the heating loss of piping network, the selection of the key parameters and the data source are introduced in detail in this paper. According to the annual meteorological data and the annual load prediction,combined with the actual situation of a project in Shanghai,the design condition and the annual heating loss are calculated, the results show that:the heating loss of cooling pipe network in design condition is about 0.2% of cooling capacity;the annual cooling loss accounted for about 0.8% of the cooling capacity;and the proportion of heating loss of the cooling pipe network is small,and much smaller than the heating loss of the heating pipe network.

Key words: district energy system, piping network, heating loss, buried depth, soil temperature, land surface temperature