The Radiation Heat Treansfer Analysis of the Cryochamber

Yong Ju Hong, Seong Je Park, Hyo Bong Kim, Deuk Yong Koh, Young Don Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The cooling load, which should be removed by the cooling system to maintain the nominal operating temperature of a cryochamber, depends on the thermal insulation efficiency of the cryochamber. Therefore, to decrease and minimize the heat loss of the cryochamber has become a big problem in the design stage, in considering the very low thermal efficiency and small cooling capacity of the cryocooler. Radiation and conduction heat transfer occur simultaneously in a cryochamber. The radiation heat transfer from the hot surface to the cold surface depends on the emissivity, temperature, area and radiation exchange factor. In the present work, the energy equation, which includes the rarefied gas conduction, radiation between the boundary surfaces and solid conduction, is solved to evaluate the steady cooling loads at the cold finger of a small cryocooler. The surface to surface radiation model is used for the calculation of the radiation exchange factor. This paper presents the effects of the emissivity of the materials and the radiation shield on the cooling load of a cryocooler.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering
Subtitle of host publicationTransactions of the Cryogenic Engineering Conference - CEC
EditorsJohn Pfotenhauer, Steven Van Sciver, Albert Zeller, Jonathan Demko, Christopher Rey, John G. Weisend II, John Barclay, Michael DiPirro, Quan-Sheng Shu, Peter Kittel, Edward Daly, John R. Hull, Jennifer Lock, Joseph Waynert, Susan Breon, James Maddocks, John Zbasnik, Patrick J. Kelley, Arkadiy Klebaner
PublisherAmerican Institute of Physics Inc.
Number of pages8
ISBN (Electronic)0735401861
Publication statusPublished - 2004 Jun 23
Event2003 Cryogenic Engineering Conference, CEC 2003 - Anchorage, United States
Duration: 2003 Sep 222003 Sep 26


Other2003 Cryogenic Engineering Conference, CEC 2003
CountryUnited States

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Hong, Y. J., Park, S. J., Kim, H. B., Koh, D. Y., & Choi, Y. D. (2004). The Radiation Heat Treansfer Analysis of the Cryochamber. In J. Pfotenhauer, S. Van Sciver, A. Zeller, J. Demko, C. Rey, J. G. Weisend II, J. Barclay, M. DiPirro, Q-S. Shu, P. Kittel, E. Daly, J. R. Hull, J. Lock, J. Waynert, S. Breon, J. Maddocks, J. Zbasnik, P. J. Kelley, & A. Klebaner (Eds.), Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (Vol. 710, pp. 587-594). American Institute of Physics Inc..