Study on Effects of Inlet Resistance on the Efficiency of Scroll Expander in Micro-Compressed Air Energy Storage System

Aiqin Sun, Jidai Wang, Guangqing Chen, Jihong Wang, Shihong Miao, Dan Wang, Zhiwei Wang and Lan Ma
Additional contact information
Aiqin Sun: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Jidai Wang: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Guangqing Chen: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Jihong Wang: School of Engineering, University of Warwick, West Midlands, Coventry CV47AL, UK
Shihong Miao: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Dan Wang: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Zhiwei Wang: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Lan Ma: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Energies, 2020, vol. 13, issue 18, 1-12

Abstract: As an important part of a micro-compressed air energy storage system, the scroll expander directly affects the efficiency of the whole energy storage system. The effects of resistance on the efficiency of scroll expander caused by inlet structure and size are discussed with theory analysis and experimental methods in this paper. Micro-compressed air energy storage system has aroused widespread attention because of its pollution-free, high flexibility, in the community, remote areas power supply. Comprehensive experimental work with the selections of different size and structure of the air inlet of the scroll expander was performed with the cutting angle of air inlet chamber of the scroll expander. The results of the experiments are discussed on how exergy efficiency and inlet flow of the scroll expander were affected resulting from the cutting angles dissected. The results show that a maximum value exists for exergy efficiency of the scroll expander. Therefore, the exergy efficiency of the scroll expander can be effectively improved by enlarging the air inlet port dimension and modifying the size of air chamber.

Keywords: scroll expander; exergy efficiency; inlet resistance; experiment (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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