Energy and Exergy Analysis of Low-Cooling in Building by using Light-Vent Pipe

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Published: Feb 8, 2019
Keywords:
Light-vent pipe Energy and exergy Ceiling heat gain Daylight

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Dittha Nonthiworawong
Rattanakosin College for Sustainable Energy and Environment, Rajamangala University of Technology Rattanakosin, Nakhon Pathom, 73170, Thailand.
Phadungsak Rattanadecho
Center of Excellence in Electromagnetic Energy Utilization in Engineering, Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathum Thani 12120, Thailand.
Ratthasak Prommas
Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Rattanakosin, Nakhon Pathom, 73170, Thailand.

Abstract

This study conducts the energy and exergy analysis of a light-vent pipe which is integrated into attic space. The roof is a shed roof with 30 degrees of inclination angle. The LVP is manufactured from an aluminum sheet with a translucent flat cover and is 0.15 m in diameter. The results show that the test house integrated with the LVP could well transfer heat accumulated in attic space by natural ventilation through the LVP. The natural daylight has an influent to the air mass flow rate corresponding to energy and exergy efficiency. The total energy and exergy efficiencies were 37-67% and 12.3-33%, respectively. In addition, the ceiling heat gain and exergy heat gain performed that, the requirement of space cooling of the house with LVP lower than that the reference house.

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How to Cite
Nonthiworawong, D., Rattanadecho, P., & Prommas, R. (2019). Energy and Exergy Analysis of Low-Cooling in Building by using Light-Vent Pipe. Science & Technology Asia, 24(1), 41–53. Retrieved from https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/171210
Issue
Vol.24 No.1 (January - March 2019)
Section
Engineering