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Thermo-economic optimization of an ORC driven heat pump based on small scale turbomachinery and comparison with absorption heat pumps.

Author(s) : MOUNIER V., MENDOZA L. C., SCHIFFMANN J.

Type of article: Article, IJR article

Summary

The current paper presents the thermo-economic optimization and comparison, through a multi-objective algorithm, between HP-ORC and the competing single effect absorption heat pump (SEAHP), with the aim to find the best trade-off between investment cost and exergetic efficiency. Heat exchanger (HX) cost, which is the dominant cost driver, is predicted on catalogue-based correlations as a function of heat exchanger areas. The dominating HP-ORC working fluid is R-245fa for all operating conditions, except for hot source temperatures of 180?°C, where R-600a is a better candidate. The resulting Pareto frontiers suggest that, for hot source temperatures up to 120?°C the SEAHP and HP-ORC are highly competitive by yielding similar thermo-economic tradeoffs. For higher hot source temperatures, however, the HP-ORC outperforms the SEAHP both in terms of performance and cost while providing a significantly wider performance range (0.3??exe?0.55) with respect to the SEAHP (0.4??exe?0.49).

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Pages: 96-110

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Details

  • Original title: Thermo-economic optimization of an ORC driven heat pump based on small scale turbomachinery and comparison with absorption heat pumps.
  • Record ID : 30022177
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 81
  • Publication date: 2017/09
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2017.05.021

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