Thermodynamic investigation of Organic Rankine Cycle (ORC) energy recovery system and recent studies


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Boydak Ö., EKMEKÇİ İ., YILMAZ M., Köten H.

Thermal Science, cilt.2018, ss.2679-2690, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2018
  • Basım Tarihi: 2018
  • Doi Numarası: 10.2298/tsci170720103b
  • Dergi Adı: Thermal Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2679-2690
  • Anahtar Kelimeler: organic Rankine cycle, energy recovery, energy efficiency, energy recovery system
  • İstanbul Ticaret Üniversitesi Adresli: Evet

Özet

Recently, new environment-friendly energy conversion technologies are required for using energy resources valid to power generation. Accordingly, low-grade heat sources as solar heat, geothermal energy, and waste heat, which have available temperatures ranging between 60 and 200°C, are supposed as applicants for recent new generation energy resources. As an alternative energy source, such low-grade heat sources usage generating electricity with the help of power turbine cycles was examined through this study. Such systems have existing technologies applicable at low temperatures and a compact structure at low cost, however, these systems have a low thermal efficiency of the Rankine cycles operated at low temperatures. An Organic Rankine Cycle (ORC) is alike to a conventional steam power plant, except the working fluid, which is an organic, high molecular mass fluid with a liquid-vapor phase change, or boiling point, at a lower temperature than the water-steam phase change. The efficiency of an ORC is about between 10% and 20%, depending on temperature levels and availability of a valid fluid.