Theoretical selection criteria of organic Rankine cycle form for different heat sources

Zhai Hui-Xing, Dong Wei, Shi Lin, An Qing-Song, Wang Sui-Lin and An Bao-Lin

Energy, 2022, vol. 238, issue PC

Abstract: Organic Rankine cycle (ORC) is an effective way for low to medium grade heat to power conversion. A suitable cycle form (subcritical or trans-critical, whether to use a regenerator) is the guarantee of good cycle performance. The selection of cycle forms strongly depends on the heat source conditions. In this work, the heat source types and ORC forms are introduced firstly. Then the cycle form selection criteria are obtained through theoretical derivation, directly from the heat source parameters and getting rid of the working fluid properties, thus, having more universal applicability. The main criteria include: when Ths,out>Ths,in+ΔTp+Tcd2 (Ths,out is the outlet temperature of the heat source, Ths,in is the inlet temperature of the heat source, ΔTp is the pinch temperature difference between the heat source and the working fluid, Tcd is the working fluid condensation temperature), subcritical ORC has better thermodynamic performance than trans-critical cycle; when Ths,out>2Ths,in+ΔTp+Tcd3, a regenerator is needed to improve the cycle performance. At last, simulation results of 35 working fluids for four typical heat sources are used to verify the theoretical criteria.

Keywords: Heat source type; Regeneration; Subcritical; Theoretical derivation; Trans-critical (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221022878
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:238:y:2022:i:pc:s0360544221022878

DOI: 10.1016/j.energy.2021.122039

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().