Enhancing Split-Type Air Conditioning System Efficiency through CLOHP Integration

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Published: Jan 29, 2026
Keywords:
Looped oscillating thermosyphon heat pipe (CLOHP) split-type air conditioning energy efficiency coefficient of performance (COP) energy efficiency ratio (EER)

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W. Ritthong
Department of Energy Engineering, Faculty of Engineering and Technology, Shinawatra University, Pathum Thani 12160, Thailand
P. Jaroonsiriphan
Department of Energy Engineering, Faculty of Engineering and Technology, Shinawatra University, Pathum Thani 12160, Thailand
S. Srou
Department of Energy Engineering, Faculty of Engineering and Technology, Shinawatra University, Pathum Thani 12160, Thailand
N. Albut
Department of Mechanical Engineering, Faculty of Engineering and Technology, Bangkokthonburi University, Bangkok 10170, Thailand
P. Poungthong
Department of Industrial Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand

Abstract

This study investigates the impact of integrating looped oscillating thermosyphon heat pipes (CLOHPs) in a 3.52 kW (12,000 BTU/hr) split-type air conditioning system. The CLOHP uses water as the working fluid and R-134a for sensible heat exchange, with the goal of reducing refrigerant temperature before reaching the capillary tube, improving system efficiency. Performance tests were conducted at ambient temperatures of 294.2K, 296.2K, 298.2K and 300.2K. Results showed up to a 15.84% improvement in evaporation rate (Qevap), 16.37% in coefficient of performance (COP), and 16.13% in energy recovery rate (ERR), with higher effectiveness at higher temperatures. These findings demonstrate the potential of CLOHPs in enhancing energy efficiency and thermal performance in air conditioning systems, offering a promising solution for energy savings in residential and commercial applications.

Article Details

How to Cite
Ritthong, W., Jaroonsiriphan, P., Srou, S., Albutt, N., & Poungthong, P. (2026). Enhancing Split-Type Air Conditioning System Efficiency through CLOHP Integration. Journal of Research and Applications in Mechanical Engineering, 14(1), JRAME–26. retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/259688
Issue
Vol. 14 No. 1 (2026)
Section
RESEARCH ARTICLES
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