Modelling of organic Rankine cycle system and heat exchanger components

H. C. Jung, Susan Krumdieck*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Numerical models of a standard organic Rankine cycle (ORC) system and the heat exchangers comprising the system are developed as a design tool platform for a flexible design. The objective is design of an efficient, cost-effective ORC power plant that can effectively exploit low-grade industrial waste heat or low to medium-temperature geothermal fluid. Typical heat exchanger configurations were modelled, including the circular finned-tube evaporator, air-cooled condenser, and flat-plate preheater. A published ORC configuration and process conditions from experiments are used for the thermodynamic cycle analysis in order to validate of the system model. Heat transfer correlations and friction factors are described for the modelling of the heat exchangers. The simulation results of the ORC system provide the design requirements for the heat exchangers. Geometric specifications and performance of the heat exchangers are determined by iterative simulations.

Original languageEnglish
Pages (from-to)704-721
Number of pages18
JournalInternational Journal of Sustainable Energy
Issue number3
Early online date18 Apr 2013
Publication statusPublished - 2014


  • air-cooled condenser
  • finned-tube evaporator
  • numerical modelling
  • organic Rankine cycle
  • plate type heat exchanger
  • thermal system modelling

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • General Energy
  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes


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