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WOM: Whole ORC Model.

Number: pap. 2529

Author(s) : RANDI S., CASARI N., PINELLI M., et al.

Summary

Over the last decade, environmental and economic concerns have pushed the researchers to find new solutions in the track of a more responsible use of energy. Particularly, small scale organic Rankine cycles (ORCs) have been regarded as candidates for a better employment of waste energy. In order to increase the performance of these cycles and to extend their operating range, attention has been drawn on the behavior of the different components both experimentally as well as numerically. The numerical approach has been increasingly used in the study of the machines that compose the cycle, to overcome some limitations experimental analyses have (e.g. compatibility of refrigerant with sealing systems) and allowing for the preliminary test of new machines to be added to the cycle. In this work, a virtual test bench called Whole ORC Model (WOM) is developed demonstrating the possibility to use the numerical analysis, not only for the study/optimization of a single, stand-alone component, but also for improving the comprehension on their reciprocal interaction, and thus, the performance of the single part and on the entire system. Such a virtual model can be of paramount importance in predicting the behavior of the cycle in offdesign conditions or in gathering information about fluid stagnation locations. A preliminary assessment of an actual ORC system is reported with the goal of demonstrating the possible analyses and results. In the future, WOM can be extended in order to couple the ORC system with the external world. Specifically, the grid demand and the heat flux at the evaporator can vary: such changes can be translated in a variation in the boundary conditions. The response of the cycle to the external variation can be therefore monitored and studied.

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Pages: 10

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Details

  • Original title: WOM: Whole ORC Model.
  • Record ID : 30024597
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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