Development of a high capacity variable conductance heat pipe.The high-capacity, pressure-primed, tunnel-artery wick concept was used in a gas-controlled variable conductance heat pipe. A variety of techniques were employed to control the size of gas/vapor bubbles trapped within the artery. Successful operation was attained with a nominal 6-foot long, 1-inch diameter cold reservoir VCHP using ammonia working fluid and nitrogen control gas. The pipe contained a heat exchanger to subcool the liquid in the artery. Maximum transport capacity with a 46-inch effective length was 1200 watts level (more than 50,000 watt-inches) and 800 watts at 0.5-inch adverse tilt.
Document ID
19730051543
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kosson, R.
Hembach, R.
Edelstein, F. (Grumman Aerospace Corp. Bethpage, N.Y., United States)
Loose, J. (NASA Marshall Space Flight Center Huntsville, Ala., United States)
Date Acquired
August 7, 2013
Publication Date
July 1, 1973
Subject Category
Thermodynamics And Combustion
Report/Patent Number
AIAA PAPER 73-728
Meeting Information
Meeting: Thermophysics Conference
Location: Palm Springs, CA
Start Date: July 16, 1973
End Date: July 18, 1973
Sponsors: American Institute of Aeronautics and Astronautics