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hi all i have a problem

Question asked by Thaafer Hamzah on Dec 15, 2014
Latest reply on Dec 16, 2014 by Glenn Schroeder

hi all i work in concentric pipe(steel pipe with glass envelop) subjected to solar energy change with time, this pipe is closed from two ends, so during the solution the temperature increases  but the static pressure stay the same(101324 pa),the question is , why  the pressure do not increases too..thanks