Comparison of exergoeconomic costs of cooling methods in district cooling systems

作者：Li, Ya-Jun; Liang, Wen-Hao; Hu, Ren-Tian

来源：Journal of South China University of Technology(Natural Science Edition), 2016, 44(11): 19-25.

DOI：10.3969/j.issn.1000-565X.2016.11.004

• District cooling system
• Electric compressors
• Electricity prices
• Engineering fields
• Exergoeconomic
• Exergy Analysis
• Steam absorption
• Steam transports

To choose what kind of cooling method in district cooling systems (DCS) and how to choose have become hot topics in the DCS engineering field. In this paper, two exergy analysis models of steam absorption cooling system (SACS) and electric compressor cooling system (ECCS) are constructed, and on the basis of the two models, the two cooling systems are comparatively investigated by taking the minimum unit cooling exergoeconomy cost as the objectives. The results show that, when the two cooling systems have the same exergoeconomic cost, steam transport distance decreases as the ratio of steam exergy price to electricity price increases, and that, when the ratio is above 1.13, the exergoeconomy cost of SACS is always higher than that of ECCS. Therefore, an appropriate cooling system should be chosen by taking into consideration the steam transport distance, the electricity price and the steam exergy price.

• 出版日期2016-11-1
• 单位华南理工大学