Parametric study of a free-piston Stirling cryocooler capable of providing 350 W cooling power at 80 K

Zhu, Shunmin; Gao, Yu; Li, Xiaowei; Dai, Wei; Luo, Ercang

doi:10.1016/j.applthermaleng.2020.115101

Cited by 17 publications

(2 citation statements)

References 32 publications

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“…The numerical investigations are performed using SAGE software [25], which supports the simulation and optimization of the underlying engineering models. SAGE has been widely used in the numerical simulations of thermoacoustic engines [26,27], pulse tube cryocoolers [28,29], and free-piston Stirling cryocoolers [30,31]. In SAGE, the user can define the corresponding component models according to the actual system and set the boundary conditions for the required solutions, so that SAGE can perform 1D steady-state calculations based on the frequency domain thermoacoustic equations.…”

Section: Model Descriptionmentioning

confidence: 99%

Numerical Investigation on Regenerative Heat-Driven Cryocoolers for Zero Boil-Off Storage of Liquid Hydrogen

Luo

Chen

Zhang

et al. 2022

Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage

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Aiming at the zero boil-off demand of liquid hydrogen storage tank, this paper uses SAGE software to design and simulate 300 W @ 20 K regenerative heat-driven cryocoolers, verifying the principle feasibility of duplex free-piston Stirling cryocooler and thermoacoustic heat-driven pulse tube cryocooler for the zero boil-off storage of liquid hydrogen. The results show that under the design conditions of mean pressure of 5 MPa, the operating frequency of 50 Hz, the heating temperature of 500°C, and ambient temperature of 30°C, the exergy efficiency of the duplex free-piston Stirling cryocooler can reach 19.4%, while the exergy efficiency of the thermoacoustic heat-driven pulse tube cryocooler is 14.3%. However, because a fixed-parameter harmonic oscillator is used to couple the engine and the cryocooler in the duplex free-piston Stirling cryocooler, it is difficult to achieve multi-condition matching, which makes it very sensitive to changes in operating parameters such as mean pressure and heating temperature. In contrast, the thermoacoustic heat-driven pulse tube cryocooler is completely free of moving parts and has excellent adaptability to the operating conditions. Therefore, the thermoacoustic heat-driven pulse tube cryocooler may be a promising solution in the application field of zero boil-off storage of liquid hydrogen.

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Section: Model Descriptionmentioning

confidence: 99%

Numerical Investigation on Regenerative Heat-Driven Cryocoolers for Zero Boil-Off Storage of Liquid Hydrogen

Luo

Chen

Zhang

et al. 2022

Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage

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“…FPSE cryocoolers are used for high temperature superconducting and gas liquefaction applications because they are able to provide large cooling power reliably and economically [38]. These are of particular interest in the duplex Stirling engine, i.e., one SE receiving heat at high temperature produces the power necessary to drive another SE acting as a refrigerator or heat pump.…”

Section: Cryocoolersmentioning

confidence: 99%

Free-Piston Stirling Engine Technologies and Models: A Review

Perozziello

Grosu

Vaglieco³

2021

Energies

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The Stirling engine is an alternative solution to produce cleaner energy in order to achieve the reduction of the fossil fuel consumption and the CO2 emissions. It comprises an external combustion engine that can convert any external heat source into mechanical power, through cyclic expansion and compression of a working gas in a closed-regenerative cycle, with or without driving mechanisms. The free-piston Stirling Engine is significantly preferred because of the absence of any mechanical linkage resulting in longer operating life, lower noise pollution, maintenance and vibration free, self-starting and high thermal efficiency. The aim of this paper is to summarize the research works on the free-piston Stirling engine technologies and models. First, the working principles of the free-piston Stirling engine are described, identifying different configurations. Then, several applications are presented. Finally, a detailed review of the models available in literature is given, pointing out the main assumptions and equations.

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Theoretical exploration of a free-piston Stirling generator with a gas-compressing self-circulating heat exchanger

Luo,

Sun,

Zhang

et al. 2024

Applied Energy

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Parametric study of a free-piston Stirling cryocooler capable of providing 350 W cooling power at 80 K

Cited by 17 publications

References 32 publications

Numerical Investigation on Regenerative Heat-Driven Cryocoolers for Zero Boil-Off Storage of Liquid Hydrogen

Numerical Investigation on Regenerative Heat-Driven Cryocoolers for Zero Boil-Off Storage of Liquid Hydrogen

Free-Piston Stirling Engine Technologies and Models: A Review

Theoretical exploration of a free-piston Stirling generator with a gas-compressing self-circulating heat exchanger

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