Yanxue Li1,*, Weijun Gao1,2, Xiaoyi Zhang2, Wenya Xu1, Yingjun Ruan3, Yinzhong Wang4
Energy Engineering, Vol.119, No.1, pp. 63-81, 2022, DOI:10.32604/EE.2022.016209
Abstract The building sector contributes a large ratio of final energy consumption, and improving building energy efficiency is expected to play a significant role in mitigating its carbon dioxide emission. Herein, we collected the on-site measurement data to investigate the techno-economic performances of different heat pump types that exist in building space heating projects in Qingdao, China. An in-depth analysis revealed the temperature variations of measured low-grade heat sources over the whole heating supply period, and urban sewage water shows high stable heat energy quality compared with seawater and geothermal heat resources. Operational behaviors including cycling inlet and outlet temperature of… More >
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