Experimental study on effect of tube arrangement mode on heat transfer characteristics of a new type of elastic tube bundle

Abstract

Constant heat flux heat transfer test bed is built, and experimental study on external heat transfer characteristics of a new type of elastic tube bundle is conducted, obtaining overall and local heat transfer performance of the elastic tube bundle at different Re numbers. The results show that, within the experimental parameter range, the external heat transfer coefficient of elastic tube bundles with different tube arrangement modes generally tends to reduce with fluid pulsation frequency, and increase with fluid Re number. Comparing different tube arrangement modes, it is found that overall heat transfer performance of tube bundles ranks in this order: bilateral distribution-staggered arrangement > unilateral distribution-staggered arrangement > unilateral distribution-in line arrangement.