An experimental investigation on MEDAD hybrid desalination cycle

Handle URI:
http://hdl.handle.net/10754/621793
Title:
An experimental investigation on MEDAD hybrid desalination cycle
Authors:
Shahzad, Muhammad Wakil; Thu, Kyaw; Kim, Yong-deuk; Ng, Kim Choon
Abstract:
This paper presents an advanced desalination cycle called "MEDAD" desalination which is a hybrid of the conventional multi-effect distillation (MED) and an adsorption cycle (AD). The combined cycles allow some of MED stages to operate below ambient temperature, as low as 5. °C in contrast to the conventional MED. The MEDAD cycle results in a quantum increase of distillate production at the same top-brine condition. Being lower than the ambient temperature for the bottom stages of hybrid cycle, ambient energy can now be scavenged by the MED processes whilst the AD cycle is powered by low temperature waste heat from exhaust or renewable sources. In this paper, we present the experiments of a 3-stage MED and MEDAD plants. These plants have been tested at assorted heat source temperatures from 15. °C to 70. °C and with portable water as a feed. All system states are monitored including the distillate production and power consumption and the measured results are expressed in terms of performance ratio (PR). It is observed that the synergetic matching of MEDAD cycle led to a quantum increase in distillate production, up to 2.5 to 3 folds vis-a-vis to a conventional MED of the same rating. © 2015 Elsevier Ltd.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Shahzad MW, Thu K, Kim Y, Ng KC (2015) An experimental investigation on MEDAD hybrid desalination cycle. Applied Energy 148: 273–281. Available: http://dx.doi.org/10.1016/j.apenergy.2015.03.062.
Publisher:
Elsevier BV
Journal:
Applied Energy
Issue Date:
2-Apr-2015
DOI:
10.1016/j.apenergy.2015.03.062
Type:
Article
ISSN:
0306-2619
Sponsors:
The authors wish to thank National Research Foundation (NRF) Singapore (grant WBS nos. R-265-000-399-281 and R-265-000-466-281) and King Abdullah University of Science & Technology (KAUST) (Project no. 7000000411) for financial support for MED plant.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorShahzad, Muhammad Wakilen
dc.contributor.authorThu, Kyawen
dc.contributor.authorKim, Yong-deuken
dc.contributor.authorNg, Kim Choonen
dc.date.accessioned2016-11-03T13:25:06Z-
dc.date.available2016-11-03T13:25:06Z-
dc.date.issued2015-04-02en
dc.identifier.citationShahzad MW, Thu K, Kim Y, Ng KC (2015) An experimental investigation on MEDAD hybrid desalination cycle. Applied Energy 148: 273–281. Available: http://dx.doi.org/10.1016/j.apenergy.2015.03.062.en
dc.identifier.issn0306-2619en
dc.identifier.doi10.1016/j.apenergy.2015.03.062en
dc.identifier.urihttp://hdl.handle.net/10754/621793-
dc.description.abstractThis paper presents an advanced desalination cycle called "MEDAD" desalination which is a hybrid of the conventional multi-effect distillation (MED) and an adsorption cycle (AD). The combined cycles allow some of MED stages to operate below ambient temperature, as low as 5. °C in contrast to the conventional MED. The MEDAD cycle results in a quantum increase of distillate production at the same top-brine condition. Being lower than the ambient temperature for the bottom stages of hybrid cycle, ambient energy can now be scavenged by the MED processes whilst the AD cycle is powered by low temperature waste heat from exhaust or renewable sources. In this paper, we present the experiments of a 3-stage MED and MEDAD plants. These plants have been tested at assorted heat source temperatures from 15. °C to 70. °C and with portable water as a feed. All system states are monitored including the distillate production and power consumption and the measured results are expressed in terms of performance ratio (PR). It is observed that the synergetic matching of MEDAD cycle led to a quantum increase in distillate production, up to 2.5 to 3 folds vis-a-vis to a conventional MED of the same rating. © 2015 Elsevier Ltd.en
dc.description.sponsorshipThe authors wish to thank National Research Foundation (NRF) Singapore (grant WBS nos. R-265-000-399-281 and R-265-000-466-281) and King Abdullah University of Science & Technology (KAUST) (Project no. 7000000411) for financial support for MED plant.en
dc.publisherElsevier BVen
dc.subjectAdsorption desalinationen
dc.subjectHybrid desalinationen
dc.subjectLow grade waste heaten
dc.subjectMulti-effect desalinationen
dc.titleAn experimental investigation on MEDAD hybrid desalination cycleen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalApplied Energyen
dc.contributor.institutionDepartment of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, Singaporeen
dc.contributor.institutionDepartment of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do, South Koreaen
kaust.authorShahzad, Muhammad Wakilen
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