Assessing the performance of solar thermal driven membrane distillation for seawater desalination by computer simulation

Hung C. Duong, Lei Xia, Zhenjun Ma, Paul Cooper, Wendell Ela, Long D. Nghiem

Research output: Research - peer-reviewArticle

Abstract

A computer model was developed to simulate the performance of an integrated solar thermal driven direct contact membrane distillation (DCMD) system for seawater desalination using recorded weather data. The results highlight the importance of simulating the DCMD process together with the energy source. Indeed, when considered in isolation from the thermal energy source, increasing water cross flow velocities in the feed and distillate channels results in an increase in water flux and thermal efficiency of the DCMD module. By contrast, when coupling the DCMD module with the solar thermal collector, increasing water cross flow velocities reduces both the process water flux and thermal efficiency. This is because of the limited supply of solar thermal at any given time, and hence the feed temperature decreases when cross flow velocities increase. Thus, any benefits in the reduction of temperature polarisation due to increasing cross flow velocities are overwhelmed by the effects of feed temperature decrease on water flux and thermal efficiency. Results from our simulation also demonstrate the viability of the solar thermal driven DCMD process for small-scale seawater desalination applications. Distillate production is dependent on the availability of solar radiation during the day; nevertheless, a small system with a 7.2 m2 spiral-wound DCMD module and a 22.6 m2 flat plate solar thermal collector can produce over 140 kg of distillate each day under real weather conditions. This is equivalent to a daily distillate production rate of 19.7 kg per m2 of membrane or 6.3 kg per m2 of solar thermal collector.

LanguageEnglish (US)
Pages133-142
Number of pages10
JournalJournal of Membrane Science
Volume542
DOIs
StatePublished - Nov 15 2017
Externally publishedYes

Fingerprint

distillation
computerized simulation
membranes
Desalination
Seawater
Distillation
Membranes
Computer simulation
Hot Temperature
Computer Simulation
water
cross flow
flow velocity
Water
Flow velocity
thermodynamic efficiency
accumulators
modules
temperature
Fluxes

Keywords

  • Membrane distillation (MD)
  • Process optimisation
  • Seawater desalination
  • Simulation
  • Solar thermal energy

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Assessing the performance of solar thermal driven membrane distillation for seawater desalination by computer simulation. / Duong, Hung C.; Xia, Lei; Ma, Zhenjun; Cooper, Paul; Ela, Wendell; Nghiem, Long D.

In: Journal of Membrane Science, Vol. 542, 15.11.2017, p. 133-142.

Research output: Research - peer-reviewArticle

Duong, Hung C. ; Xia, Lei ; Ma, Zhenjun ; Cooper, Paul ; Ela, Wendell ; Nghiem, Long D./ Assessing the performance of solar thermal driven membrane distillation for seawater desalination by computer simulation. In: Journal of Membrane Science. 2017 ; Vol. 542. pp. 133-142
@article{f34d8c0e237e49619f0e145a4b5056c0,
title = "Assessing the performance of solar thermal driven membrane distillation for seawater desalination by computer simulation",
abstract = "A computer model was developed to simulate the performance of an integrated solar thermal driven direct contact membrane distillation (DCMD) system for seawater desalination using recorded weather data. The results highlight the importance of simulating the DCMD process together with the energy source. Indeed, when considered in isolation from the thermal energy source, increasing water cross flow velocities in the feed and distillate channels results in an increase in water flux and thermal efficiency of the DCMD module. By contrast, when coupling the DCMD module with the solar thermal collector, increasing water cross flow velocities reduces both the process water flux and thermal efficiency. This is because of the limited supply of solar thermal at any given time, and hence the feed temperature decreases when cross flow velocities increase. Thus, any benefits in the reduction of temperature polarisation due to increasing cross flow velocities are overwhelmed by the effects of feed temperature decrease on water flux and thermal efficiency. Results from our simulation also demonstrate the viability of the solar thermal driven DCMD process for small-scale seawater desalination applications. Distillate production is dependent on the availability of solar radiation during the day; nevertheless, a small system with a 7.2 m2 spiral-wound DCMD module and a 22.6 m2 flat plate solar thermal collector can produce over 140 kg of distillate each day under real weather conditions. This is equivalent to a daily distillate production rate of 19.7 kg per m2 of membrane or 6.3 kg per m2 of solar thermal collector.",
keywords = "Membrane distillation (MD), Process optimisation, Seawater desalination, Simulation, Solar thermal energy",
author = "Duong, {Hung C.} and Lei Xia and Zhenjun Ma and Paul Cooper and Wendell Ela and Nghiem, {Long D.}",
year = "2017",
month = "11",
doi = "10.1016/j.memsci.2017.08.007",
volume = "542",
pages = "133--142",
journal = "Jornal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",

}

TY - JOUR

T1 - Assessing the performance of solar thermal driven membrane distillation for seawater desalination by computer simulation

AU - Duong,Hung C.

AU - Xia,Lei

AU - Ma,Zhenjun

AU - Cooper,Paul

AU - Ela,Wendell

AU - Nghiem,Long D.

PY - 2017/11/15

Y1 - 2017/11/15

N2 - A computer model was developed to simulate the performance of an integrated solar thermal driven direct contact membrane distillation (DCMD) system for seawater desalination using recorded weather data. The results highlight the importance of simulating the DCMD process together with the energy source. Indeed, when considered in isolation from the thermal energy source, increasing water cross flow velocities in the feed and distillate channels results in an increase in water flux and thermal efficiency of the DCMD module. By contrast, when coupling the DCMD module with the solar thermal collector, increasing water cross flow velocities reduces both the process water flux and thermal efficiency. This is because of the limited supply of solar thermal at any given time, and hence the feed temperature decreases when cross flow velocities increase. Thus, any benefits in the reduction of temperature polarisation due to increasing cross flow velocities are overwhelmed by the effects of feed temperature decrease on water flux and thermal efficiency. Results from our simulation also demonstrate the viability of the solar thermal driven DCMD process for small-scale seawater desalination applications. Distillate production is dependent on the availability of solar radiation during the day; nevertheless, a small system with a 7.2 m2 spiral-wound DCMD module and a 22.6 m2 flat plate solar thermal collector can produce over 140 kg of distillate each day under real weather conditions. This is equivalent to a daily distillate production rate of 19.7 kg per m2 of membrane or 6.3 kg per m2 of solar thermal collector.

AB - A computer model was developed to simulate the performance of an integrated solar thermal driven direct contact membrane distillation (DCMD) system for seawater desalination using recorded weather data. The results highlight the importance of simulating the DCMD process together with the energy source. Indeed, when considered in isolation from the thermal energy source, increasing water cross flow velocities in the feed and distillate channels results in an increase in water flux and thermal efficiency of the DCMD module. By contrast, when coupling the DCMD module with the solar thermal collector, increasing water cross flow velocities reduces both the process water flux and thermal efficiency. This is because of the limited supply of solar thermal at any given time, and hence the feed temperature decreases when cross flow velocities increase. Thus, any benefits in the reduction of temperature polarisation due to increasing cross flow velocities are overwhelmed by the effects of feed temperature decrease on water flux and thermal efficiency. Results from our simulation also demonstrate the viability of the solar thermal driven DCMD process for small-scale seawater desalination applications. Distillate production is dependent on the availability of solar radiation during the day; nevertheless, a small system with a 7.2 m2 spiral-wound DCMD module and a 22.6 m2 flat plate solar thermal collector can produce over 140 kg of distillate each day under real weather conditions. This is equivalent to a daily distillate production rate of 19.7 kg per m2 of membrane or 6.3 kg per m2 of solar thermal collector.

KW - Membrane distillation (MD)

KW - Process optimisation

KW - Seawater desalination

KW - Simulation

KW - Solar thermal energy

UR - http://www.scopus.com/inward/record.url?scp=85026922313&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85026922313&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2017.08.007

DO - 10.1016/j.memsci.2017.08.007

M3 - Article

VL - 542

SP - 133

EP - 142

JO - Jornal of Membrane Science

T2 - Jornal of Membrane Science

JF - Jornal of Membrane Science

SN - 0376-7388

ER -