Performance of single- and double-effect operable mechanical vapor recompression desalination system adaptable to variable wind energy

Yeongmin Kim, Dong kook Kim, Yoshiharu Amano, Kim Choon Ng, Wongee Chun

Research output: Contribution to journalArticle

Abstract

This paper deals with the development and operation of a mechanical vapor recompression (MVR) desalination system with improved energy efficiency in harnessing wind energy, which is non-dispatchable. Its design, construction, and operation details are presented in this paper. Especially, the main focus of developing the system was on the operation of the system in conjunction with variable loads of new and renewable power sources, in particular, varying wind power. That is, the present work has been carried out to assess the feasibility of its operation in light of capacity modulation to match the power generated under various wind speeds. Optimal operation modes of the system were studied, in which single- and double-effect operations were analyzed for their improvement in energy efficiency. The compression ratio of the proposed MVR system was 1.55 at an inverter speed of 55 Hz, which agreed well with its design value. Operation of the main heat exchanger remained stable within the limits of its operable range, although the temperature differences in the main heat exchanger did not remain constant because of the pressure variations in the evaporator. The daily freshwater yield was between 28 and 51 tons. The power consumption per ton of freshwater produced was about 43 kW for a single effect and about 23 kW for a double effect, which is about twice as efficient.

Original languageEnglish
Pages (from-to)4606-4612
Number of pages7
JournalInternational Journal of Energy Research
Volume43
Issue number9
DOIs
Publication statusPublished - 2019 Jul

Fingerprint

Desalination
Wind power
Heat exchangers
Energy efficiency
Vapors
Evaporators
Electric power utilization
Modulation
Temperature

Keywords

  • energy efficiency
  • MVR desalination system
  • single and double effect
  • variable wind power

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Performance of single- and double-effect operable mechanical vapor recompression desalination system adaptable to variable wind energy. / Kim, Yeongmin; Kim, Dong kook; Amano, Yoshiharu; Ng, Kim Choon; Chun, Wongee.

In: International Journal of Energy Research, Vol. 43, No. 9, 07.2019, p. 4606-4612.

Research output: Contribution to journalArticle

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