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contributor authorAgrawala, Prabhav
contributor authorLilhare, Yatharth
contributor authorArora, Amit
date accessioned2025-08-20T09:30:34Z
date available2025-08-20T09:30:34Z
date copyright2/18/2025 12:00:00 AM
date issued2025
identifier issn1948-5085
identifier othertsea-23-1607.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4308393
description abstractDownsizing double-pipe heat exchangers is possible by deploying ribs on the two sides of the heat exchangers. The shape of these ribs, along with two key geometric variables—pitch and height, are crucial in the selection of energy-efficient rib configurations. This is because the enhancement in heat transfer performance comes at the cost of increased pressure drop. Thus, the goal of this numerical investigation is to identify favorable rib shapes and explore the effect of truncation on triangular ribs, which was found to be absent in existing literature. Truncation can address challenges with existing triangular ribs and is expected to greatly affect the performance of conventional triangular ribs. To explore this conclusively, an unbiased and exhaustive analysis is carried out by comparing the performance of confinements with modified and regular triangular ribs, keeping plain confinements as the baseline. Furthermore, the effects of two principal design variables—rib height and rib pitch—are explored for each shape, over a wide range considering essentially all possible combinations. Separate results are presented for the inner and outer confinements of the double-pipe heat exchangers (pipes and annuli) to allow for the extrapolation of results for a wide range of applications employing internal flows in pipes and annuli. A phenomenological model is developed to classify the thermal and hydraulic performance of each confinement and identify optimal geometrical configuration and identify best-performing design(s). Once optimal rib pitch-–height combinations are identified, performance at this optimal combination is evaluated at different Reynolds numbers, spanning from 10,000 to 30,000.
publisherThe American Society of Mechanical Engineers (ASME)
titleEnergy-Efficient Downsizing of Ribbed Confinements for Heat Exchange Applications
typeJournal Paper
journal volume17
journal issue5
journal titleJournal of Thermal Science and Engineering Applications
identifier doi10.1115/1.4065896
journal fristpage51002-1
journal lastpage51002-18
page18
treeJournal of Thermal Science and Engineering Applications:;2025:;volume( 017 ):;issue: 005
contenttypeFulltext


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