Second-law analysis of recirculating multi-stage flash desalting system

M. A. Darwish, N. M. Al-Najem, M. S. Al-Ahmad

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A comprehensive study is conducted to analyze a recirculating multi-stage flash desalting plant based on the second law of thermodynamics. Although the first law of thermodynamics indicates the overall performance of the desalting plants, it does not show the actual losses in each process of the plant. In this work the energy (i.e., availability) losses due to the irreversibilities in different processes in the plant are evaluated. The study shows that the major exergy losses occur, respectively, in the vapor condensation processes, the vapor flashing process, and the feed heating process in the brine heater. The other losses due to heat transfer through walls, pressure drop through demisters, and friction flow in pipes are negligible.

Original languageEnglish
Pages (from-to)289-309
Number of pages21
JournalDesalination
Volume89
Issue number3
Publication statusPublished - 1 Jan 1993
Externally publishedYes

Fingerprint

Salt removal
thermodynamics
Vapors
Thermodynamics
exergy
Industrial heating
Exergy
pressure drop
brine
Pressure drop
heat transfer
Condensation
friction
pipe
Pipe
Availability
Friction
Heat transfer
heating
loss

ASJC Scopus subject areas

  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering
  • Chemistry(all)
  • Chemical Engineering(all)
  • Filtration and Separation

Cite this

Darwish, M. A., Al-Najem, N. M., & Al-Ahmad, M. S. (1993). Second-law analysis of recirculating multi-stage flash desalting system. Desalination, 89(3), 289-309.

Second-law analysis of recirculating multi-stage flash desalting system. / Darwish, M. A.; Al-Najem, N. M.; Al-Ahmad, M. S.

In: Desalination, Vol. 89, No. 3, 01.01.1993, p. 289-309.

Research output: Contribution to journalArticle

Darwish, MA, Al-Najem, NM & Al-Ahmad, MS 1993, 'Second-law analysis of recirculating multi-stage flash desalting system', Desalination, vol. 89, no. 3, pp. 289-309.
Darwish, M. A. ; Al-Najem, N. M. ; Al-Ahmad, M. S. / Second-law analysis of recirculating multi-stage flash desalting system. In: Desalination. 1993 ; Vol. 89, No. 3. pp. 289-309.
@article{4b716e19ba4b48f682ee205aa3b96bfa,
title = "Second-law analysis of recirculating multi-stage flash desalting system",
abstract = "A comprehensive study is conducted to analyze a recirculating multi-stage flash desalting plant based on the second law of thermodynamics. Although the first law of thermodynamics indicates the overall performance of the desalting plants, it does not show the actual losses in each process of the plant. In this work the energy (i.e., availability) losses due to the irreversibilities in different processes in the plant are evaluated. The study shows that the major exergy losses occur, respectively, in the vapor condensation processes, the vapor flashing process, and the feed heating process in the brine heater. The other losses due to heat transfer through walls, pressure drop through demisters, and friction flow in pipes are negligible.",
author = "Darwish, {M. A.} and Al-Najem, {N. M.} and Al-Ahmad, {M. S.}",
year = "1993",
month = "1",
day = "1",
language = "English",
volume = "89",
pages = "289--309",
journal = "Desalination",
issn = "0011-9164",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Second-law analysis of recirculating multi-stage flash desalting system

AU - Darwish, M. A.

AU - Al-Najem, N. M.

AU - Al-Ahmad, M. S.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - A comprehensive study is conducted to analyze a recirculating multi-stage flash desalting plant based on the second law of thermodynamics. Although the first law of thermodynamics indicates the overall performance of the desalting plants, it does not show the actual losses in each process of the plant. In this work the energy (i.e., availability) losses due to the irreversibilities in different processes in the plant are evaluated. The study shows that the major exergy losses occur, respectively, in the vapor condensation processes, the vapor flashing process, and the feed heating process in the brine heater. The other losses due to heat transfer through walls, pressure drop through demisters, and friction flow in pipes are negligible.

AB - A comprehensive study is conducted to analyze a recirculating multi-stage flash desalting plant based on the second law of thermodynamics. Although the first law of thermodynamics indicates the overall performance of the desalting plants, it does not show the actual losses in each process of the plant. In this work the energy (i.e., availability) losses due to the irreversibilities in different processes in the plant are evaluated. The study shows that the major exergy losses occur, respectively, in the vapor condensation processes, the vapor flashing process, and the feed heating process in the brine heater. The other losses due to heat transfer through walls, pressure drop through demisters, and friction flow in pipes are negligible.

UR - http://www.scopus.com/inward/record.url?scp=0027386744&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027386744&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0027386744

VL - 89

SP - 289

EP - 309

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 3

ER -