Channeled coolant plate: a new method to enhance freshwater production from an air gap membrane distillation (AGMD) desalination unit

Bahar, Rubina and Hawlader, Mohammad Nurul Alam and Mohamed Ariff, Tasnim Firdaus (2015) Channeled coolant plate: a new method to enhance freshwater production from an air gap membrane distillation (AGMD) desalination unit. Desalination, 359. pp. 71-81. ISSN 0011-9164

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Abstract

Air gap membrane distillation (AGMD) desalination process incorporates phase change and transport of vapor from saline water through a hydrophobic membrane and an air gap due to difference in vapor pressure across the membrane and a coolant plate. In this study, an attempt was made to observe the effect of a channeled coolant plate instead of a flat plate for distillation of saline water. Since the AGMD process has limited distillate production due to the resistance offered by the air gap, a specially designed coolant plate was used to manipulate the mass transfer by enhancing the heat transfer during condensation. For the same equivalent air gap, the freshwater production enhanced maximum up to 50% compared to a flat coolant plate for a coolant temperature of 25 °C. A one dimensional heat transfer model is developed and validated using the experimental data. The results obtained from the model matched well with experiments and it was used to predict freshwater production from various designs of finned coolant plates.

Item Type:	Article (Journal)
Additional Information:	7007/40446
Uncontrolled Keywords:	Air gap membrane distillation (AGMD) Condensation Channeled coolant plate Desalination
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD201 Water supply for domestic and industrial purposes T Technology > TJ Mechanical engineering and machinery > TJ163.26 Energy conservation
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Rubina Bahar
Date Deposited:	06 Jan 2015 09:51
Last Modified:	08 Nov 2016 09:36
URI:	http://irep.iium.edu.my/id/eprint/40446

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