Characterization of a thermoelectric/Joule–Thomson hybrid microcooler

Cao, Haishan; Vanapalli, Srinivas; Holland, H.J.; Vermeer, C.H.; Brake, H.J.M. ter

doi:10.1016/j.cryogenics.2016.04.012

Cited by 9 publications

(8 citation statements)

References 16 publications

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“…During a typical J-T cryocooling process, a significant portion of the energy contained in the high-pressure gas is converted into kinetic energy, which cannot be used for work or expelled, and is instead dissipated as heat. As a result, a substantial part of the cooling potential associated with gas expansion is lost [107]. To illustrate the role of an ejector in a refrigeration cycle, a basic schematic of a Linde refrigeration cycle with an ejector and two heat exchangers is shown in Figure 7a, while the corresponding temperature versus entropy diagram of the refrigeration cycle with the ejector is presented in Figure 7b.…”

Section: Hydrogen Reliquefactionmentioning

confidence: 99%

Strategies to recover and minimize boil-off losses during liquid hydrogen storage

Morales-Ospino

Celzard

Fierro

2023

Renewable and Sustainable Energy Reviews

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Section: Hydrogen Reliquefactionmentioning

confidence: 99%

Strategies to recover and minimize boil-off losses during liquid hydrogen storage

Morales-Ospino

Celzard

Fierro

2023

Renewable and Sustainable Energy Reviews

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“…At fixed size the mass-flow rate can only be increased by increasing the pressure difference produced by the compressors, resulting in a higher pressure drop along the cryocooler. At fixed size and fixed pressure drop, the only thing we can do is to increase the specific enthalpy difference-for instance, increasing the charge pressure, replacing the pure gas by a mixture [32], or by using precooling [33].…”

Section: Measures To Increase the Net Cooling Powermentioning

confidence: 99%

“…Such high pressures severely add complexity to the development of compressors. To overcome this disadvantage, a TE-JT hybrid microcooler was developed [33] [see Fig. 17(a)].…”

Section: University Of Twentementioning

confidence: 99%

Progress in and Outlook for Cryogenic Microcooling

Cao

Brake

2020

Phys. Rev. Applied

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“…With the development of integrated electronic devices, the demands for compactness and cooling capacity of the cooler have been consistently increased. 9 Therefore, a more efficient and compact heat exchanger is required in the J-T cooler. Over the past decade, the microchannel has been developed rapidly due to the advancement of micro-etching and other processing technologies.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a distributed Joule‐Thomson effect cooler with pillars

et al. 2021

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The application of general Joule-Thomson (J-T) coolers in the integrated electronic equipment is limited by its compactness in the heat exchanger and cooling power (a few milliwatts to hundreds of milliwatts). However, the microchannel with pillars has many advantages, such as compact structure, tiny axial thermal conductivity, and large heat transfer area. Besides, when the pressure variation of the fluid is large in the microchannel, the distributed Joule-Thomson effect is generated significantly. Therefore, this study proposed a throttling and heat exchange structure, where heat transfer and throttling coexisted, and fabricated a laminated microchannel distributed J-T cooler with pillars utilizing the processing technology of printed circuit heat exchanger.The refrigeration performance concerning the cold-end temperature, cooling power, and temperature distribution was then investigated through experiments with two refrigerants (argon and nitrogen). The study implies that the temperature difference and cooling power of the cooler both increase with the rise of the inlet pressure with argon, the no-load cold-end temperature is 166.1 K, and the gross cooling power is 3.83 W at 5.20 MPa. The temperature of the cooler increases with the rise of heat load, while the parasitic heat load decreases. The cold-end temperature is 186.0 K, then the parasitic heat load and the gross cooling power are respectively 3.17 W and 7.17 W at 5.20 MPa under the heat load's condition of 4 W. Comparing the refrigeration performance of nitrogen and argon, the cold-end temperature of nitrogen at 5.20 MPa is 235.7 K, which is close to that of argon at 2.98 MPa. Whereas the cooling time of nitrogen is slightly shorter than that of argon, and the cooling power is 3.10 W, higher than that of argon. In addition, this study provides new insight into increasing the cooling power and reducing the application cost of miniature coolers.

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Characterization of a thermoelectric/Joule–Thomson hybrid microcooler

Cited by 9 publications

References 16 publications

Strategies to recover and minimize boil-off losses during liquid hydrogen storage

Strategies to recover and minimize boil-off losses during liquid hydrogen storage

Progress in and Outlook for Cryogenic Microcooling

Characterization of a distributed Joule‐Thomson effect cooler with pillars

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