Experimental study of Organic Rankine cycle system by using R141b as working fluid

Authors

  • Aya H.A .Kareem Kareem Department of mechanical Engineering, Wasit University, Wasit, Iraq
  • Ali A. F. Al-Hamadan Ali A. F. Al-Hamadan

DOI:

https://doi.org/10.31185/ejuow.Vol8.Iss1.152

Keywords:

Organic Rankine cycle (ORC), multi-vane expander, refrigeration (R-141b), engineering equation solver (EES), heat source temperature.

Abstract

Organic Rankine cycle (ORC) is one of the renewable energy to generate power at low temperatures; however, the thermal and physical properties data of the working fluid in this system are limited. In this regards, the experimental study by using R-141b as the working fluid and hot water (i.e. 50°C and 90°C) on the ORC system was conducted in order to evaluate the ORC performance via changing temperatures. Further, the air compressor was modified to act as a multi-vane expander in the ORC system. Energy and exergy analysis of ORC system was done by using Engineering Equation Solver (EES) program.

It was found that the performance of the expander is acceptable and suitable for operating conditions. In addition, the heat source temperature has a direct effect on expander performance. The higher temperatures of the heat source led to an increase the expander inlet temperature. This system satisfied maximum thermal and exergy efficiency and they found equal to 1.8 % and 21%, respectively. Moreover, the rotation speed and power of expander are equal to 1200 RPM and 2.331 kW respectively. It was concluded that the working fluid R-141b is suitable for ORC system due to consider the working fluid that do not need high temperatures to evaporate.

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References

REFERENCE

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Published

2020-07-05

How to Cite

Kareem, A. H. .Kareem, & Al-Hamadan, A. A. F. . (2020). Experimental study of Organic Rankine cycle system by using R141b as working fluid. Wasit Journal of Engineering Sciences, 8(1), 21-30. https://doi.org/10.31185/ejuow.Vol8.Iss1.152

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Section

Mechanical Engineering