**5. Conclusions**

In this research, conventional and advanced exergy analysis are performed for three different models of organic Rankine cycles (BORC, SRORC and DRORC) at specified operating conditions by the use of a low-temperature heat source. The main results obtained from the present study are listed as below:

• According to the conventional exergy analysis, the highest exergy destruction was obtained in the evaporator for BORC, and for SRORC and DRORC, the maximum exergy destruction belongs to the turbine. Additionally, results of the conventional exergy analysis show that the condenser in three cycles is the third important component that should be noticed in designing. The exergy destruction rate for pumps may be neglected.


**Author Contributions:** S.Y.D.; conceptualization; methodology; software; validation; formal analysis; writing—original draft preparation. G.S.; writing—original draft preparation; writing—review and editing; visualization; supervision. A.D.; writing—review and editing; supervision. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The authors declare no conflicts of interest.
