Thermal performance of TAPS heat pipes with non-condensable gas blockage
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چکیده
Over 124,300 heat pipes were installed in vertical support members on the Trans Alaska Pipeline System. Infrared surveys in the early 1980s revealed cold topping on some of these heat pipes. The cold topping was due to an accumulation of non-condensable gases, a by-product of corrosion or chemical dissociation of anhydrous ammonia. In 2000, Alyeska Pipeline Service Company undertook an experimental program to measure the heat transfer performance of cold-topped heat pipes. The test program results are presented and discussed showing the reduction in the heat pipes’ heat transfer performance as a function of hydrogen cold topping levels. Permafrost, Phillips, Springman & Arenson (eds) © 2003 Swets & Zeitlinger, Lisse, ISBN 90 5809 582 7
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