INVESTIGATION OF THE EFFECTIVE THERMAL CONDUCTIVITY OF CAST LITHIUM HYDRIDE
The effective thermal conductivity of cast lithium hydride was evaluated as a function of temperature as influenced by non-homogeneous (cracked) distribution, various gases in cracks and voids, finned surfaces, and partial adnesion to the container. The over-all effective thermal conductivity of lithium hydride between the outer surface of its container and the surface of an enclosed cooling tube can be established at 6.1 and 3.0 Btu/hr-ft- deg F at 250 and 900 deg F, respectively, by using firuned surfaces on the O.D. of the tube and a helium internal atmosphere. The use of finned surfaces alone will raise the over-all effective thermal conductivity to 3.3 and 2.6 Btu/hr-ft- deg F at 250 and 900 deg F, respectively. The conductivity can be increased further by intrcducing a gas into the cracks and voids in the lithium hydride. (auth)
- Research Organization:
- General Electric Co. Flight Propulsion Lab. Dept., Cincinnati
- NSA Number:
- NSA-15-029686
- OSTI ID:
- 4842572
- Report Number(s):
- APEX-744
- Country of Publication:
- United States
- Language:
- English
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