Force and energy analysis of single-piston free-piston expander—linear generator

Wu, Zhong; Zhang, Honggang; Liu, Zhongliang; Tian, Guohong; Hou, Xiaochen; Yang, Fubin

doi:10.1016/j.energy.2022.123926

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…Wu et al proposed a single piston free-piston expander using compressed air as the working fluid for a linear generator testing system for power conversion. The effects of intake time and intake pressure on the performance of the testing system were studied, and the nominal power electricity conversion loss coefficient was proposed for the first time to represent the energy loss [12,13]. Xu et al [14] developed an FPE-LG experimental bench and established a simulation model using Matlab/Simulink.…”

Section: Research Status Of Free-piston Expander Linear Generatormentioning

confidence: 99%

Research on Gas Recycling of Free-Piston Expander–Linear Generator for Organic Rankine Cycle of Vehicle

Peng,

Zhang,

Tong

et al. 2023

Sustainability

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A (FPE-LG) is a new type of vehicle waste heat recovery device based on an organic Rankine cycle. It is expected to achieve the reuse of vehicle internal combustion engine waste heat and improve the comprehensive utilization rate of energy. To enable the FPE-LG to recover exhaust gas to a greater extent in practical applications, based on the FPE-LG coupling gas storage tank test platform, the gas is discharged from the expander cylinder. This paper analyzes the influence of differences to the tank volume, intake pressure, intake duration time, expansion duration time and exhaust duration time on piston motion characteristics and gas storage and release time during the cycle, and verifies the feasibility of gas working as a recycling medium. The results showed that the energy storage of lithium batteries increases with the increase of intake pressure, and the energy stored in lithium batteries during gas release is higher than that during gas storage; the intake duration time, expansion duration time and exhaust duration time have little effect on the storage of lithium battery energy during the cycle. When the intake pressure is 0.5 MPa, the volume of the gas tank is 30 L, and the intake duration time, expansion duration time and exhaust duration time are 50 ms, 80 ms and 30 ms, respectively, the maximum actual stroke of the piston can reach 89.592 mm.

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Section: Research Status Of Free-piston Expander Linear Generatormentioning

confidence: 99%