Li, Yan; Fu, Lin; Zhang, Shigang; Zhao, Xiling - In: Energy 36 (2011) 7, pp. 4570-4576
Large district heating (DH) system accounts for 70% of urban building heating in China. In North China, this proportion is even higher (The North China is the north of the Huai River and Qinling Mountains). Many cities in North China can exploit various kinds of low-grade renewable energy. This...