Experimental investigation of heat transfer characteristics of inclined aluminium two phase closed thermosyphon

Sachin V. Mutalikdesai; Ajit M. Kate; Tarang R. Shinde; Naveen Kumar Gupta; Hitesh Panchal; L. Natrayan; Radhey Shyam Meena; Md Irfanul Haque Siddiqui; Anand Patel; Abhinav Kumar

doi:10.1515/kern-2023-0045

Article

Experimental investigation of heat transfer characteristics of inclined aluminium two phase closed thermosyphon

Sachin V. Mutalikdesai , Ajit M. Kate , Tarang R. Shinde , Naveen Kumar Gupta , Hitesh Panchal , L. Natrayan , Radhey Shyam Meena , Md Irfanul Haque Siddiqui , Anand Patel and Abhinav Kumar

Published/Copyright: November 8, 2023

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From the journal Kerntechnik Volume 88 Issue 6

Abstract

A reduction in the size of electronic equipment increases the heat generation rate. Failure of electronic equipment occurs if the heat is not dissipated properly. This paper examines the performance of aluminium two-phase closed thermosyphon for cooling electronic equipment. Acetone charged aluminium two-phase closed thermosyphon was fabricated with an inside diameter of 17.05 mm and 1 mm thickness. A series of experimentations were performed for inclination angles of 10°–90° at selected filling ratios of 30, 60 and 100 %, along with heat inputs of 100, 200 and 300 W. The condenser section flow rate of water was maintained constant. Minimum thermal resistance was obtained at a 30° inclination angle for all filling ratios and heat inputs. The evaporator and condenser sections have a maximum heat transfer coefficient at a 30° inclination angle. Thermosyphon, with a 30 % or 60 % filling ratio, performed better than a 100 % filling ratio for all inclination angles and heat inputs. As the heat input was increased, the heat transfer coefficients of the evaporator and condenser section were increased, whereas total thermal resistance decreased. For 300 W heat input and 30 % filling ratio, the minimum thermal resistance at a 30° inclination angle was 0.158 °C/W. It is found that, the same heat input and filling ratio, the maximum heat transfer coefficient value for the evaporator and condenser section at a 30° inclination angle was 1602 W/m² °C and 5652 W/m² °C, respectively.

Keywords: inclination angle; filling ratio; heat input; total thermal resistance; evaporator heat transfer coefficient; condenser heat transfer coefficient

Corresponding authors: Hitesh Panchal, Department of Mechanical Engineering, Government Engineering College Patan, Patan, Gujarat, India, E-mail: Engineerhitesh2000@gmail.com; and Sachin V. Mutalikdesai, Department of Mechanical Engineering, Marathwada Mitra Mandal’s Institute of Technology, (Affiliated to Savitribai Phule Pune University, Pune), Pune, Maharashtra, India, E-mail: sachin.3182@gmail.com

Funding source: King Saud University

Award Identifier / Grant number: Unassigned

Acknowledgment

The authors extend their appreciation to the Researchers Supporting Project number (RSPD2023R999), King Saud University, Riyadh, Saudi Arabia.

Research ethics: Not applicable.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: The authors state no conflict of interest.
Research funding: None declared.
Data availability: Not applicable.

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Received: 2023-06-17

Published Online: 2023-11-08

Published in Print: 2023-12-15

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Articles in the same Issue

https://doi.org/10.1515/kern-2023-0045

Keywords for this article

inclination angle; filling ratio; heat input; total thermal resistance; evaporator heat transfer coefficient; condenser heat transfer coefficient