Experimental Investigation on the Performance of the Scroll Expander under Various Driving Cycles

Hailong Yang, Yonghong Xu (), Xiaohui Zhong (), Jiajun Zeng and Fubin Yang
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Hailong Yang: Beijing University of Technology, Beijing 100124, China
Yonghong Xu: Mechanical Electrical Engineering School, Beijing Information Science and Technology University, Beijing 100192, China
Xiaohui Zhong: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Jiajun Zeng: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Fubin Yang: Beijing University of Technology, Beijing 100124, China

Energies, 2024, vol. 17, issue 2, 1-24

Abstract: Energy storage is considered a crucial unit in utilizing renewable energy sources, and compressed air energy storage (CAES) provides a cost-effective solution. It offers the benefits of zero pollution, a long lifespan, low maintenance costs, and minimal environmental impact. In order to increase the possibilities of compressed air energy storage for vehicle power, the performance of the expander needs to be studied. First, a CAES unit test bench is established. Then, the volumetric flow rate, rotational speed, torque, and output power are examined. Additionally, the isentropic exhaust temperature, pressure, and gas consumption rate of the scroll expander are analyzed. Finally, analyzing the economic feasibility of the CAES unit entails running the unit under varied driving conditions. Results reveal that the pressure of the input expander is high, which will lead to greater torque, greater peak power, and a greater temperature drop, but the gas in the air tank will also run out quickly. The peak power of the scroll expander does not occur at the maximum volume flow rate, rotation speed, and torque. The basic investment of the CAES unit mainly depends on the peak output power.

Keywords: compressed air energy storage; scroll expander; experimental investigation; different driving cycles; economic model (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: 2024
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