Studying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations

Handle URI:
http://hdl.handle.net/10754/622472
Title:
Studying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations
Authors:
Oh, Seung Jin; Ng, Kim Choon ( 0000-0003-3930-4127 ) ; Thu, Kyaw; Kum Ja, Marip; Islam, Md Raisul; Chun, Wongee; Chua, Kian Jon Ernest
Abstract:
A solid desiccant dehumidifier equipped with adsorbent coated heat exchangers has been developed and investigated experimentally. The main component of the solid desiccant dehumidifier included two heat exchangers that were coated with silica gel regular density (RD) type powder in order to increase water adsorption uptake by improving its heat transfer. A series of experiment were conducted to evaluate two key performance indices, namely, moisture removal capacity and thermal performance, under various operating conditions. Results revealed that the reduction of dehumidification process time by 50% can lead to significant improvement of the mean humidity ratio at outlet up to 9.3 g/kg. The maximum moisture removal was found to decrease from 14.8 to 13.2 g/kg with higher airflow rates arising from the reduced residence time of the process air. It was further observed that the water moisture removal was highly affected by inlet humidity ratio. In addition, marked improvement in thermal performance can be achieved by a lowered hot water regeneration temperature. Copyright © 2016 ASHRAE
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Oh SJ, Choon Ng K, Thu K, Kum Ja M, Islam MR, et al. (2016) Studying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations. Science and Technology for the Built Environment: 1–9. Available: http://dx.doi.org/10.1080/23744731.2016.1218234.
Publisher:
Informa UK Limited
Journal:
Science and Technology for the Built Environment
Issue Date:
26-Sep-2016
DOI:
10.1080/23744731.2016.1218234
Type:
Article
ISSN:
2374-4731; 2374-474X
Sponsors:
The authors gratefully acknowledge the generous funding from the National Research Foundation (NRF) Singapore under the Energy Innovation Research Programme (EIRP) Funding Scheme (R-265-00-543-279) managed on behalf by Building and Construction Authority (BCA).
Additional Links:
http://www.tandfonline.com/doi/full/10.1080/23744731.2016.1218234
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorOh, Seung Jinen
dc.contributor.authorNg, Kim Choonen
dc.contributor.authorThu, Kyawen
dc.contributor.authorKum Ja, Maripen
dc.contributor.authorIslam, Md Raisulen
dc.contributor.authorChun, Wongeeen
dc.contributor.authorChua, Kian Jon Ernesten
dc.date.accessioned2017-01-02T09:28:33Z-
dc.date.available2017-01-02T09:28:33Z-
dc.date.issued2016-09-26en
dc.identifier.citationOh SJ, Choon Ng K, Thu K, Kum Ja M, Islam MR, et al. (2016) Studying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations. Science and Technology for the Built Environment: 1–9. Available: http://dx.doi.org/10.1080/23744731.2016.1218234.en
dc.identifier.issn2374-4731en
dc.identifier.issn2374-474Xen
dc.identifier.doi10.1080/23744731.2016.1218234en
dc.identifier.urihttp://hdl.handle.net/10754/622472-
dc.description.abstractA solid desiccant dehumidifier equipped with adsorbent coated heat exchangers has been developed and investigated experimentally. The main component of the solid desiccant dehumidifier included two heat exchangers that were coated with silica gel regular density (RD) type powder in order to increase water adsorption uptake by improving its heat transfer. A series of experiment were conducted to evaluate two key performance indices, namely, moisture removal capacity and thermal performance, under various operating conditions. Results revealed that the reduction of dehumidification process time by 50% can lead to significant improvement of the mean humidity ratio at outlet up to 9.3 g/kg. The maximum moisture removal was found to decrease from 14.8 to 13.2 g/kg with higher airflow rates arising from the reduced residence time of the process air. It was further observed that the water moisture removal was highly affected by inlet humidity ratio. In addition, marked improvement in thermal performance can be achieved by a lowered hot water regeneration temperature. Copyright © 2016 ASHRAEen
dc.description.sponsorshipThe authors gratefully acknowledge the generous funding from the National Research Foundation (NRF) Singapore under the Energy Innovation Research Programme (EIRP) Funding Scheme (R-265-00-543-279) managed on behalf by Building and Construction Authority (BCA).en
dc.publisherInforma UK Limiteden
dc.relation.urlhttp://www.tandfonline.com/doi/full/10.1080/23744731.2016.1218234en
dc.titleStudying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operationsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalScience and Technology for the Built Environmenten
dc.contributor.institutionDepartment of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singaporeen
dc.contributor.institutionEngineering Science Programme, National University of Singapore, Singaporeen
dc.contributor.institutionDepartment of Nuclear and Energy Engineering, Jeju National University, Jeju, Koreaen
kaust.authorNg, Kim Choonen
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