Exergy and Exergoeconomic Analysis of a Combined Cooling, Heating, and Power System Based on Solar Thermal Biomass Gasification

Jin Wu, Jiangjiang Wang, Jing Wu and Chaofan Ma
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Jin Wu: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Jiangjiang Wang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Jing Wu: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Chaofan Ma: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China

Energies, 2019, vol. 12, issue 12, 1-19

Abstract: The purpose of this paper is to improve the utilization of renewable energy by exergy and exergoeconomic analysis of the novel combined cooling, heating, and power (CCHP) system, which is based on solar thermal biomass gasification. The source of heat to assist biomass and steam gasification is the solar heat collected by a dish collector, and the product gas being fuel that drives the internal combustion engine to generate electricity and then to produce chilled/hot water by a waste heat unitization system. The analysis and calculation of the exergy loss and exergy efficiency of each component reveal the irreversibility in the heating and cooling conditions. Then, the exergoeconomic costs of multi-products such as electricity, chilled water, heating water, and domestic hot water are calculated by using the cost allocation method based on energy level. The influencing factors of the unit exergy cost of products are evaluated by sensitivity analysis, such as initial investment cost, biomass cost, service life, interest rate, and operating time coefficient. The results reveal that the internal combustion engine takes up 49.2% of the total exergy loss, and the most effective method of products cost allocation is the exergoeconomic method based on energy level and conforms to the principle of high energy level with high cost.

Keywords: combined cooling; heating and power (CCHP) system; solar thermal biomass gasification; exergy analysis; cost allocation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (20)

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