Experimental investigation of contact resistance across pressed lead and aluminum

Smith, A.C.

Savannah River Site (S.C.)

关键词: Pressure Dependence;    Aluminium;    Thermal Conductivity;    Heat Transfer;    Tritium;   

DOI  :  10.2172/752684
RP-ID  :  WSRC-TR-2000-00078
RP-ID  :  AC09-96SR18500
RP-ID  :  752684

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.