Thermodynamic analysis of power production based on nitrogen liquefaction cold energy using the cryogenic method


Utlu Z., Karabuga A., YAKUT M. Z.

34th International Conference on Efficency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2021, Taormina, Sicily, Italy, 28 June - 02 July 2021, pp.1364-1371, (Full Text) identifier

  • Publication Type: Conference Paper / Full Text
  • City: Taormina, Sicily
  • Country: Italy
  • Page Numbers: pp.1364-1371
  • Keywords: Cold energy, Exergy, Exergy analysis, Liquefaction
  • Isparta University of Applied Sciences Affiliated: Yes

Abstract

When liquefaction systems are evaluated in terms of high purity, cryogenic liquefaction systems come to the fore. However, the high electricity consumption of cryogenic liquefaction systems is one of the most important disadvantages for these plants. Due to the large difference between the temperature of the cryogenic fluid used in liquefaction systems and the ambient temperature, a significant amount of cold energy can be recovered during use. In this study, thermodynamic analysis of organic Rankine cycle (ORC) cycle integrated into nitrogen liquefaction plant using cryogenic method with a novel design has been performed. It was used as cold energy in the ORC cycle by using 10% of the mass of liquid nitrogen obtained from the liquefaction system. The result of the study, the exergy efficiencies of cryogenic liquefaction plant and ORC systems are calculated as %38.25 and %4,17, respectively. losses is examined and necessary improvements are being made for the sustainability of the system.