Development of High Capacity Split Stirling Cryocooler for HTS

Yumoto, Kenta; Nakano, Katsutoshi; Hiratsuka, Yoshikatsu

doi:10.1016/j.phpro.2015.06.059

Cited by 11 publications

(3 citation statements)

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“…The Stirling machines have been proven effective in power generation systems, [5][6][7][8] duplex Stirling systems, [15][16][17] CHP systems, [20][21][22] and refrigeration systems. [25][26][27] These existing reports revealed that the Stirling machines feature high efficiency and simple mechanical mechanisms. Unfortunately, so far there is no tri-generation system developed except for the cooling and power cogeneration system presented in Reference 17.…”

Section: Introductionmentioning

confidence: 98%

“…The coefficient of performance (COP) of this cooler was within 0.22 to 0.27 at 3 bar filling pressure of helium and 290 to 320 rpm rotation speed. Yumoto, Nakano and Hiratsuka 26 developed a split‐type Stirling cryocooler with a free‐piston‐type expander. The cryocooler achieved 120 W cooling capacity at 70 K, and its COP was 0.056 on a 2.15‐kW power consumption.…”

Section: Introductionmentioning

confidence: 99%

“…However, to the best of the authors' knowledge, these systems are typically complicated and have a large overall volume. The Stirling machines have been proven effective in power generation systems, 5‐8 duplex Stirling systems, 15‐17 CHP systems, 20‐22 and refrigeration systems 25‐27 . These existing reports revealed that the Stirling machines feature high efficiency and simple mechanical mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Development of tri‐generation system combining Stirling cooler and Stirling engine

Cheng

Huang

2021

Intl J of Energy Research

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Summary This study is aimed at developing a tri‐generation system that converts a thermal energy source to mechanical power, cooling. and heating simultaneously for the residential houses or factory buildings. The approach is implemented by combining a Stirling cooler and a Stirling engine. The input thermal energy is converted into mechanical power by the Stirling engine. A part of the mechanical power is utilized by an external load, and the remaining part of the mechanical power is used to drive the Stirling cooler to provide a cooling effect. In addition, the heats rejected by both the devices are used for water heating. In this study, a theoretical model including thermodynamic and dynamic analyses is developed to predict the performance of the combined system. For validation, a Stirling cooler and a Stirling engine are built and connected, and experiments are conducted to partially demonstrate the feasibility of the present approach. The results show that the experiments closely agree with the numerical predictions for the variations in the cold head temperature of the cooler and the stable rotation speed of the combined system. According to the energy flow analysis, the overall efficiency of the tri‐generation system can reach approximately 91%.

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