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Arabian Journal for Science and Engineering

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30.11.2022 | Research Article-mechanical Engineering

Experimental Assessment of Thermal Performance and Fluid Flow Characteristics of Perforated Hollow Elliptical Insert in a Tube Heat Exchanger

verfasst von: Sohan Lal Sharma, Satyendra Singh, Ajoy Debbarma, Kuber Singh Mehra

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 9/2023

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Abstract

A heat exchanger’s thermohydraulic performance is improved using a variety of passive ways with different insert geometries. At lower values of Reynolds number (Re), these procedures are typically effective; however, high Re yields ineffective outcomes. The current experimental investigation examines how a perforated solid hollow elliptical insert affects a circular tube heat exchanger’s overall performance. Different geometrical parameters, such as a fixed major axis equal to the hydraulic diameter of the tube (6.8 cm) and changing minor axes of 3, 4.5, and 5 cm, are utilized to provide the major to minor axis height ratio (HR = 0.74, 0.66 and 0.44), respectively. Elliptical inserts were inserted inside the tube in three different configurations as length and number of rings: (1) Full length (FL, N = 8), (2) Three-fourth length (3/4L, N = 6), and (3) Half-length (1/2L, N = 4) of the test section. The study’s Reynolds number ranges from 10,000 to 35,000, and it was conducted for turbulent flow. The increase in heat transfer, friction factor, and thermal performance factor from 1.64 to 2.81 times, 16 to 20 times, and 1.11 to 1.3 times, accordingly, was obtained by the experiment.

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Titel: Experimental Assessment of Thermal Performance and Fluid Flow Characteristics of Perforated Hollow Elliptical Insert in a Tube Heat Exchanger
verfasst von: Sohan Lal Sharma
Satyendra Singh
Ajoy Debbarma
Kuber Singh Mehra
Publikationsdatum: 30.11.2022
Verlag: Springer Berlin Heidelberg
Erschienen in: Arabian Journal for Science and Engineering / Ausgabe 9/2023
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI: https://doi.org/10.1007/s13369-022-07501-1

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