An experimental study on planar vacuum membrane dehumidifier equipped with serpentine flow channel plate

Chun-Han Li; Zih-Jyun Lin; Chih-Chang Chang; Saman Rashidi; Wei-Mon Yan

Alexandria Engineering Journal (Feb 2023)

An experimental study on planar vacuum membrane dehumidifier equipped with serpentine flow channel plate

Chun-Han Li,
Zih-Jyun Lin,
Chih-Chang Chang,
Saman Rashidi,
Wei-Mon Yan

Affiliations

Chun-Han Li: Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors, National Taipei University of Technology, Taipei 10608, Taiwan
Zih-Jyun Lin: Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors, National Taipei University of Technology, Taipei 10608, Taiwan
Chih-Chang Chang: Division of Energy, Refrigeration & Air-Conditioning Engineering, Department of Industrial Technology Education, National Kaohsiung Normal University, Kaohsiung 82444, Taiwan
Saman Rashidi: Department of Energy, Faculty of New Science and Technologies, Semnan University, Semnan, Iran; Corresponding authors at: Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan (Wei-Mon Yan).
Wei-Mon Yan: Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors, National Taipei University of Technology, Taipei 10608, Taiwan; Corresponding authors at: Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan (Wei-Mon Yan).

Journal volume & issue: Vol. 64
pp. 13 – 23

Abstract

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The membrane dehumidifiers can be used in air conditioning systems. In this study, an experimental investigation is conducted on the planar vacuum membrane dehumidifier equipped with the four-serpentine flow channel plate. A vacuum membrane dehumidification technique is used to measure the dehumidification performance. The effects of different parameters, such as the temperature and humidity of air, the vacuum pressure, and the air flow rate, on different dehumidification performance indexes are investigated. Four dehumidification performance indexes, including the water collection of the cold trap, the water flux, the pressure drop, and the total pumping power, are investigated. The results show that the water collection capacity and water flux are increased as the inlet air temperature increases. For the air flow rate of 65 l.min−1, the water collection capacity at the inlet air humidity of 90 % is up to 2.51 times of that at the inlet air humidity of 60 %. As compared with the temperature effect, the humidity has less effect on the pressure drop. The decrease in the pressure drop and total pumping power can be observed with increasing the vacuum pressure. For example, at the air flow rate of 65 l.min−1, the pressure drop reduces about 11 % by increasing the vacuum pressure in the range of 0.66 kPa to 2.66 kPa.

Published in Alexandria Engineering Journal

ISSN: 1110-0168 (Print); 2090-2670 (Online)
Publisher: Elsevier
Country of publisher: Egypt
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/alexandria-engineering-journal/

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