STUDY AND FABRICATION OF A SOLID-REFRIGERATION SUPERINSULATION COOLING SYSTEM.
Abstract
A report is made of the prerequisite research and development required to design and fabricate a superinsulated solid-refrigerant cooling system. Two of seven superinsulation experiments were completed. Two significant performance parameters were identified. These are: Gas conduction at pressures below 2.5 x 10 to the minus 4 mm Hg and number of radiation shields per unit thickness. A graphical method is presented for determining the leakage of heat through supports, as a function of the weight of the loaded inner can. Three methods of heat transfer were selected for study. Copper was found to be the most favorable weight-optimized solid conductor below 40 K; above 40 K, aluminum must be considered. An experimental evaluation of induced-convection heat transfer has been initiated. A micro-fan has been designed to study the energy effects and efficiency of a forced-convection heat-transfer device. Helium was selected as a working fluid. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1964
- Accession Number
- AD0454029
Entities
People
- J. Harkee
Organizations
- Aerojet Rocketdyne Holdings