Effect of multiple V-baffles on thermal enhancement characteristics in a channel

Name: P. Samruaisin

Organization : Mahanakorn University of Technology. School of Engineering and Industrial Technology

Name: P. Kaewkosum

Organization : King Mongkut's Institute of Technology Ladkrabang. School of Engineering

Name: A. Phila

Organization : Mahanakorn University of Technology. School of Engineering and Industrial Technology

Name: S. Eiamsa-ard

Organization : Mahanakorn University of Technology. School of Engineering and Industrial Technology

Name: S. Bhattacharyya

Organization : Birla Institute of Technology and Science Pilani. Department of Mechanical Engineering

Name: V. Chuwattanakul

Organization : Mahanakorn University of Technology. School of Engineering and Industrial Technology

Email : varesa.ch@kmitl.ac.th

Name: C. Thianpong

Organization : Mahanakorn University of Technology. School of Engineering and Industrial Technology

keyword: Channel

LCSH: Heat -- Transmission

; Thermal performance

; Multiple V-shaped baffles

Abstract: In this paper, an experimental investigation of the heat transfer and friction behavior of a channel with multiple V-shaped baffles (oriented upward and downward) is described. The baffle turbulators were mounted on the heated bottom wall of a rectangular channel with a 3.75:1 aspect ratio. In the experiments, the pitch ratio (p/H) is 1.5, baffle height ratio (e/H) is 0.3, attack angle (θ) is 45°, baffle height (e) is 12 mm, and the Reynolds numbers (Re) from 6,000 to 24,000 were tested. The present findings demonstrate that all baffles significantly increased heat transfer by 2.35 to 3.77% compared to a smooth channel. The heat transfer rates generated by the multiple V-shaped baffles with an upward orientation were 4.55 to 9.85% higher than those obtained by the multiple V-shaped baffles with downward orientation under the same conditions. The greatest thermal performance factor for the range of conditions evaluated was 1.32 when multiple V-shaped baffles were utilized, oriented upward, at a Reynolds number of 6,000

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2024

Modified: 2024-12-17

Issued: 2024-12-17

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BibliograpyCitation : In Thai Society of Mechanical Engineers (TSME) and Chiang Mai University. The 13th TSME International Conference on Mechanical Engineering (TSME-ICoME 2023) (pp.644-652). Chiang Mai : Chiang Mai University, 2023

eng

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