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Experimental investigation of contact resistance across pressed lead and aluminum

By A.C. Smith

Abstract

In the proposed production of Accelerator Production of Tritium (APT) blanket module, lead will be encased in aluminum cladding. Energy transfer rate from the lead to the cooling water will be a function of the contact resistance between lead and aluminum. No data for contact resistance for this application exists in the literature. An experimental investigation has been conducted to determine thermal contact resistance between lead and aluminum in vacuum environment and also investigate the effect of pressure, surface roughness, and interface temperature on the contact resistance. The contact resistance decreases with the increase in contact pressure. Interface temperature and surface roughness do not affect the contact resistance significantly. There is slight increase in contact conductance with increasing temperature. The experimental results are generally well within acceptable accuracy and the data should be a good reference for the APT model

Topics: Pressure Dependence, Aluminium, Thermal Conductivity, Heat Transfer, Tritium, 43 Particle Accelerators, Lead, Roughness, Isotope Production, Accelerator Facilities, Coatings, 45 Military Technology, Weaponry, And National Defense
Publisher: Savannah River Site (S.C.)
Year: 2000
DOI identifier: 10.2172/752684
OAI identifier:
Provided by: UNT Digital Library
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