Technical comparison between TVC/MEB and MSF

M. A. Darwish, Ammar Alsairafi

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Recently, large numbers of high capacity TVC/MEB (multi-effect thermal vapor compression combined withconventinalmulti effect boiling) desalting units have been built or ordered in the UAE and elsewhere. An in-depth comparison between the predominantly used MSF and the TVC/MEB is conducted in this paper to show the reasons of this trend to used the newly used TVC/MEB units. The TVC/MEB units operate at lower top brine temperature TBT to limit the risk of scale formation and corrosion. This decreases the difference between TBT and last effect (stage) temperature Tn, and this tends toincrease the heat transfer surface area of the TVC/MEB compared to the MSF system. However, the high heat transfer rates in film boiling in TVC/MEB evaporators keep the heat transfer area the same in both systems. Moreover, the TVC/MEB system has more merits copared to the MSF such as: it has better response to the variation of steam supply, less footprint area, less pumping energy, and the ability to operate at different modes than the design.

Original languageEnglish
Pages (from-to)223-239
Number of pages17
JournalDesalination
Volume170
Issue number3
DOIs
Publication statusPublished - 5 Nov 2004
Externally publishedYes

Fingerprint

temperature effect
Thermal effects
Boiling liquids
Vapors
compression
heat transfer
Heat transfer
Salt removal
comparison
effect
Steam
Evaporators
footprint
brine
corrosion
pumping
surface area
temperature
Corrosion
Temperature

Keywords

  • Brine salinity
  • Equivalent work
  • Falling film evaporators
  • Feed salinity
  • Gain ratio
  • Multi-effect
  • Multi-stage flash desalting systems
  • Performance ratio
  • Pumping energy
  • Thermal vapor compression
  • Top brine temperature

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Technical comparison between TVC/MEB and MSF. / Darwish, M. A.; Alsairafi, Ammar.

In: Desalination, Vol. 170, No. 3, 05.11.2004, p. 223-239.

Research output: Contribution to journalArticle

Darwish, M. A. ; Alsairafi, Ammar. / Technical comparison between TVC/MEB and MSF. In: Desalination. 2004 ; Vol. 170, No. 3. pp. 223-239.
@article{27b45da427d8420693fb190384f935d5,
title = "Technical comparison between TVC/MEB and MSF",
abstract = "Recently, large numbers of high capacity TVC/MEB (multi-effect thermal vapor compression combined withconventinalmulti effect boiling) desalting units have been built or ordered in the UAE and elsewhere. An in-depth comparison between the predominantly used MSF and the TVC/MEB is conducted in this paper to show the reasons of this trend to used the newly used TVC/MEB units. The TVC/MEB units operate at lower top brine temperature TBT to limit the risk of scale formation and corrosion. This decreases the difference between TBT and last effect (stage) temperature Tn, and this tends toincrease the heat transfer surface area of the TVC/MEB compared to the MSF system. However, the high heat transfer rates in film boiling in TVC/MEB evaporators keep the heat transfer area the same in both systems. Moreover, the TVC/MEB system has more merits copared to the MSF such as: it has better response to the variation of steam supply, less footprint area, less pumping energy, and the ability to operate at different modes than the design.",
keywords = "Brine salinity, Equivalent work, Falling film evaporators, Feed salinity, Gain ratio, Multi-effect, Multi-stage flash desalting systems, Performance ratio, Pumping energy, Thermal vapor compression, Top brine temperature",
author = "Darwish, {M. A.} and Ammar Alsairafi",
year = "2004",
month = "11",
day = "5",
doi = "10.1016/j.desal.2004.01.006",
language = "English",
volume = "170",
pages = "223--239",
journal = "Desalination",
issn = "0011-9164",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Technical comparison between TVC/MEB and MSF

AU - Darwish, M. A.

AU - Alsairafi, Ammar

PY - 2004/11/5

Y1 - 2004/11/5

N2 - Recently, large numbers of high capacity TVC/MEB (multi-effect thermal vapor compression combined withconventinalmulti effect boiling) desalting units have been built or ordered in the UAE and elsewhere. An in-depth comparison between the predominantly used MSF and the TVC/MEB is conducted in this paper to show the reasons of this trend to used the newly used TVC/MEB units. The TVC/MEB units operate at lower top brine temperature TBT to limit the risk of scale formation and corrosion. This decreases the difference between TBT and last effect (stage) temperature Tn, and this tends toincrease the heat transfer surface area of the TVC/MEB compared to the MSF system. However, the high heat transfer rates in film boiling in TVC/MEB evaporators keep the heat transfer area the same in both systems. Moreover, the TVC/MEB system has more merits copared to the MSF such as: it has better response to the variation of steam supply, less footprint area, less pumping energy, and the ability to operate at different modes than the design.

AB - Recently, large numbers of high capacity TVC/MEB (multi-effect thermal vapor compression combined withconventinalmulti effect boiling) desalting units have been built or ordered in the UAE and elsewhere. An in-depth comparison between the predominantly used MSF and the TVC/MEB is conducted in this paper to show the reasons of this trend to used the newly used TVC/MEB units. The TVC/MEB units operate at lower top brine temperature TBT to limit the risk of scale formation and corrosion. This decreases the difference between TBT and last effect (stage) temperature Tn, and this tends toincrease the heat transfer surface area of the TVC/MEB compared to the MSF system. However, the high heat transfer rates in film boiling in TVC/MEB evaporators keep the heat transfer area the same in both systems. Moreover, the TVC/MEB system has more merits copared to the MSF such as: it has better response to the variation of steam supply, less footprint area, less pumping energy, and the ability to operate at different modes than the design.

KW - Brine salinity

KW - Equivalent work

KW - Falling film evaporators

KW - Feed salinity

KW - Gain ratio

KW - Multi-effect

KW - Multi-stage flash desalting systems

KW - Performance ratio

KW - Pumping energy

KW - Thermal vapor compression

KW - Top brine temperature

UR - http://www.scopus.com/inward/record.url?scp=11944274349&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11944274349&partnerID=8YFLogxK

U2 - 10.1016/j.desal.2004.01.006

DO - 10.1016/j.desal.2004.01.006

M3 - Article

VL - 170

SP - 223

EP - 239

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 3

ER -