An evaluation of multi-effect desalination with a thermal vapour compression system in terms of thermo-economics

Tontu M., Şahin B., Bilgili M.

INTERNATIONAL JOURNAL OF EXERGY, cilt.30, ss.126-138, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1504/ijex.2019.102173
  • Dergi Adı: INTERNATIONAL JOURNAL OF EXERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.126-138
  • Anahtar Kelimeler: brine temperature, desalination, energy, exergy destruction, exergy efficiency, gain output ratio, multi-effect, sea water temperature, thermo economic analysis, thermal power plant, thermal vapour compression, THERMOECONOMIC ANALYSIS, THERMODYNAMIC ANALYSIS, EXERGY ANALYSIS, MED-TVC, PERFORMANCE, ENERGY, OPTIMIZATION
  • Çukurova Üniversitesi Adresli: Evet

Özet

In this study, a multi-effect distillation system (MED-TVC) that is presently in use in a thermal power plant was analysed. The operating data of an existing MED-TVC (2,000 m(3)/day) desalination process were used for thepresent analysis. The analysis of the considered system was performed based on the energy, exergy and thermoeconomic approach. Also, the effect of operating plant load, seawater temperatures and upper brine temperatures on the performance of the desalination plant was investigated. The gain output ratio and exergy efficiency increased with increasing production load and seawater temperature. When the production load and seawater temperatures were 100% and 33 degrees C, respectively, the gain output ratio and exergy efficiency obtained was 7.73 and 2% respectively. The results showed that the steam ejector was responsible for about 45% of the total exergy destruction. The unit product cost of the distilled water at the full load was calculated by 1.7 $/m(3).