Abstract
A gas gap heat switch has been developed for use in space borne cryogenic systems. The switch is simple, small and lightweight. Due to the absence of moving parts lifetime and reliability are expected to be very high. Four switches have been manufactured and thermal and vibration tests have been successfully carried out. The lowest resonant frequency is 380 Hz and the switches underwent a random vibration up to 11 G in all directions from 30 to 2000 Hz, and a constant acceleration test at 15 G between 15 and 100 Hz. As an example an “ON” thermal conductance at 4 K of ≈ 35 mW.K−1 was measured and the ON to OFF ratio was found to be of the order of 2700. The switching temperature is around 15 K.
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References
L. Duband, L. Hui and A. Lange “A Space-borne 3He refrigerator” Cryogenics vol 30, p 263 (1990)
C. Jewell and G. Rouillé “Development of a sub-1 K cryocooling stage” document ESA/ESTEC YCT/963.Cj/if (1992).
J. M. L. Engels, F. W. Gorter and A. R. Miedema “Magnetoresistance of gallium — A practical heat switch at liquid helium temperature” Cryogenics vol 12, p 141 (1972).
R. Radebaugh “Electrical and thermal magnetoconductivities of single-crystal beryllium at low temperatures and its use as a heat switch” J. of Low Temp. Physics vol 27, p 91 (1977)
C. V. Heer and J. G. Daunt “Heat flow in metals below 1 K and a new method for magnetic cooling” Phys. Rev. vol 76, p 854 (1949)
W. Reese and W. A. Steyert “Properties of lead thermal switches at low temperatures”, Rev. Sci. Instr. vol 33, p 43 (1962).
R. M. Mueller, C. Buchal, T. Oversluizen and F. Pobell “Superconducting aluminum heat switch and plated press-contacts for use at ultralow temperatures” Rev. Sci. Instr. vol 49, p 515 (1978).
J. H. Colwell “The performance of a mechanical heat switch at low temperatures” Rev. Sci. Instr. vol 40, p 1182 (1969).
J. D. Siegwarth “A high conductance helium temperature heat switch”, Cryogenics vol 16, p 73(1976).
S. Van Oost, G. Bakaert, R. S. Bhatti, S. Scull and C. Jewell “A heat switch for space cryocooler applications” Proceedings of the 4th European Symposium on Space Environmental and Control Systems, p 209, Florence, Italy, (1991).
P. T. Timbie, G. M. Bernstein and P. L. Richards “Development of an adiabatic demagnetization refrigerator for SIRTF” Cryogenics vol 30, p 271 (1990).
J. P. Torre and G. Chanin “Heat switch for liquid-helium temperatures” Rev. Sci. Instr. vol 55, p 213 (1984).
D. J. Frank and T. C. Nast “Getter-activated cryogenic thermal switch” Adv. Cryo. Eng. vol 31, p 933 (1986).
W. E. Gifford, N. Kadaikkal and A. Acharya “Simon helium liquefaction method using a refrigerator and thermal valve” Adv. Cryo. Eng. vol 15, p 422 (1970).
P. Roubeau, G. Der Nigohossian and O. Avenel “Adsorption de l’hélium 4 par le charbon actif” Colloque International vide et froid Grenoble, SFITV (1969).
R. R. Conte “Eléments de cryogénie” Masson & Cie (1970).
R. J. Corrucini “Calculation of gaseous heat conduction in dewars” Adv. Cryo. Eng. vol 3, p353 (1957).
R. J. Roark and W. C. Young “Formulas for stress and strain” Mc Gray-Hill international book company (1983).
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Duband, L. (1995). A Thermal Switch for Use at Liquid Helium Temperature in Space-Borne Cryogenic Systems. In: Ross, R.G. (eds) Cryocoolers 8. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9888-3_72
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DOI: https://doi.org/10.1007/978-1-4757-9888-3_72
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