Title: Tubular sublimator/evaporator heat sink

Abstract: An evaporative refrigerator or cooler comprising a bundle of spaced, porous walled tubes closed at one of their ends and vented to a vacuum at the other end is disclosed. The tube bundle is surrounded by a water jacket having a hot water inlet distribution manifold and a cooled water outlet through a plenum chamber. In operation, hot water is pumped into the jacket to circulate around the tubes, and when this water meets the vacuum existing inside the tubes, it evaporates thereby cooling the water in the jacket. If cooling proceeds to the point where water penetrating or surrounding all or part of the tubes freezes, operation continues with local sublimation of the ice on the tubes while the circulating water attempts to melt the ice. Under some conditions, both sublimation and evaporation may take place simultaneously in different regions of the device.

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Inventors: Webbon, Bruce W. (San Jose, CA, US)

Application Number: 623187
Filing Date: 1975-10-16
Publication_date: 1977-02-15
Assignee: The United States of America as represented by the Administrator of the (Washington, DC)
Primary Class(es): 62/100 62/121, 62/269, 62/315, 261/104
Other Classes:
US Patent Ref:

1285415	Nov, 1918	Schou	62/269.
2182788	Dec, 1939	Cornel, Jr.	62/315.
2461636	Feb, 1949	Gaylor	62/315.
3079765	Mar, 1963	Vantine	62/259.
3170303	Feb, 1965	Rannenberg et al.	62/315.
3196634	Jul, 1965	Rich	62/315.
3197973	Aug, 1965	Rannenberg et al.	62/315.
3362186	Jan, 1968	Patterson	62/315.
3403531	Oct, 1968	Oesterheld	62/121.
3543411	Nov, 1968	Bardsley et al.	62/268.

Other Refs:
Primary Examiner: King, Lloyd L.
Assistant Examiner:
Attorney: Brekke; Darrell G., Grafel; Gary F., Manning; John R.