Small Scale Organic Rankine Cycle (ORC): A Techno-Economic Review

Lorenzo Tocci, Tamas Pal, Ioannis Pesmazoglou and Benjamin Franchetti
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Lorenzo Tocci: Department of Mechanical and Aerospace Engineering, “La Sapienza” University of Rome, Via Eudossiana 18, 00184 Rome, Italy
Tamas Pal: Entropea Labs, 2a Greenwood Road, London E81AB, UK
Ioannis Pesmazoglou: Entropea Labs, 2a Greenwood Road, London E81AB, UK
Benjamin Franchetti: Entropea Labs, 2a Greenwood Road, London E81AB, UK

Energies, 2017, vol. 10, issue 4, 1-26

Abstract: The Organic Rankine Cycle (ORC) is widely considered as a promising technology to produce electrical power output from low-grade thermal sources. In the last decade, several power plants have been installed worldwide in the MW range. However, despite its market potential, the commercialization of ORC power plants in the kW range did not reach a high level of maturity, for several reasons. Firstly, the specific price is still too high to offer an attractive payback period, and secondly, potential costumers for small-scale ORCs are typically SMEs (Small-Medium Enterprises), generally less aware of the potential savings this technology could lead to. When it comes to small-scale plants, additional design issues arise that still limit the widespread availability of the technology. This review paper presents the state of the art of the technology, from a technical and economic perspective. Working fluid selection and expander design are illustrated in detail, as they represent the bottleneck of the ORC technology for small-scale power production. In addition, a European market analysis is presented, which constitutes a useful instrument to understand the future evolution of the technology.

Keywords: Organic Rankine Cycle (ORC) review; working fluid selection; expander selection; mini-ORC; ORC survey (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (42)

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