Optimization of heat transfer in a vertical cylindrical tube with vertically aligned fins
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This paper presents the optimal geometric configuration of a passive heat exchanger in a vertical cylinder. The heat ex-changer is positioned vertically at the center of the cylinder. Several parameters and flow conditions are investigated to determine the optimal geometric parameters. A finite volume numerical technique is used to obtain computational results. The results showed that the number of fins and the cylinder height imposed a more significant effect as the inlet velocity increased, whereas the fin height showed similar effects for several inlet velocities tested. The best heat flux performance was observed at a fin height of 12 mm and a fin count of 60 at a high inlet velocity. A cylinder length of 240 mm is selected considering geometry restrictions.
Abstract
This paper presents the optimal geometric configuration of a passive heat exchanger in a vertical cylinder. The heat ex-changer is positioned vertically at the center of the cylinder. Several parameters and flow conditions are investigated to determine the optimal geometric parameters. A finite volume numerical technique is used to obtain computational results. The results showed that the number of fins and the cylinder height imposed a more significant effect as the inlet velocity increased, whereas the fin height showed similar effects for several inlet velocities tested. The best heat flux performance was observed at a fin height of 12 mm and a fin count of 60 at a high inlet velocity. A cylinder length of 240 mm is selected considering geometry restrictions.