Performance comparison of combined cooling heating and power system in different operation modes

Jiang-Jiang Wang, You-Yin Jing, Chun-Fa Zhang and Zhai, Zhiqiang (John)

Applied Energy, 2011, vol. 88, issue 12, 4631 pages

Abstract: Operation mode of combined cooling heating and power (CCHP) system determines its energetic and environmental performances. This paper analyzes the energy flows of CCHP system and separated production (SP) system. The fuel energy consumptions of CCHP system following electrical demand management (EDM) and thermal demand management (TDM) are deduced respectively. Three indicators: primary energy saving, exergy efficiency and CO2 emission reduction, are employed to evaluate the performances of CCHP system for a commercial building in Beijing, China. The feasibility analysis shows that the performance of CCHP system is strictly dependent upon building energy demands. The selection of CCHP operation modes is systemically based on building loads, CCHP system and local SP system. The calculation results conclude that CCHP system in winter under EDM achieves more benefits than in summer. The sensitivity discussion indicates that the coefficient of performance for cooling and the efficiency of electricity generation are the most sensitive variables to the energetic and environmental performances of CCHP system.

Keywords: Combined cooling heating and power (CCHP); Electrical demand management (EDM); Thermal demand management (TDM); Primary energy saving; Exergy efficiency; CO2 emission reduction (search for similar items in EconPapers)
Date: 2011
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (80)

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DOI: 10.1016/j.apenergy.2011.06.007

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