Modeling and Optimization of Natural Gas CCHP System in the Severe Cold Region

Yidan Song, Qiaoqun Sun (), Yu Zhang, Yaodong Da, Heming Dong, Hebo Zhang, Qian Du and Jianmin Gao
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Yidan Song: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Qiaoqun Sun: School of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
Yu Zhang: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yaodong Da: China Special Equipment Inspection and Research Institute, Beijing 100029, China
Heming Dong: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Hebo Zhang: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Qian Du: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Jianmin Gao: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Energies, 2023, vol. 16, issue 12, 1-18

Abstract: A natural gas combined cooling, heating, and power (CCHP) system is a typical integrated energy supply method that optimizes end−use energy. However, how to achieve economically feasible natural gas CCHP in severe cold regions with low−grade heat demand reaching 50% is still a pressing issue. This paper establishes a typical natural gas CCHP system model for severe cold regions and conducts the system. Based on the climate conditions of Harbin, the economic optimization of independent gas turbine systems, internal combustion engines, and gas turbine systems is still a pressing issue. Based on the climate conditions of Harbin, the economic optimization of independent gas turbine systems, internal combustion engine systems, and steam boiler systems under different cooling and heating load ratios was carried out. The combination of “internal combustion engine + steam boiler” has the most optimal cost of RMB 1.766 million (USD 0.255 million), saving 10.7%, 7.8%, and 18.3% compared to the three single equipment subsystems respectively. This provides good theoretical support for the construction of multi−energy heterogeneous energy systems.

Keywords: natural gas CCHP systems; severe cold regions; economics; optimization of system configuration and operation (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: 2023
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