Experimental investigation of modern ORC working fluids R1224yd(Z) and R1233zd(E) as replacements for R245fa

Sebastian Eyerer, Fabian Dawo, Johannes Kaindl, Christoph Wieland and Hartmut Spliethoff

Applied Energy, 2019, vol. 240, issue C, 946-963

Abstract: The Organic Rankine Cycle (ORC) is a promising technology to convert low temperature heat to electrical power. It utilizes organic substances, which are often refrigerants, as working fluids. With the groups of hydrofluoroolefines (HFO) and hydrochlorofluoroolefines (HCFO), a new generation of refrigerants has been introduced within the last years. These refrigerants have a significantly smaller Global Warming Potential (GWP) compared to the currently dominating fluids, which are within the group of hydrofluorocarbons (HFC). A typical representative of HFC fluids for ORC applications is R245fa, with an GWP value of 1030. According to the thermophysical properties, promising low-GWP alternatives for this fluid are R1233zd(E) and R1224yd(Z) with a three orders of magnitude lower GWP value.

Keywords: Organic Rankine cycle; Low GWP working fluid; Low temperature heat utilization; Fourth generation refrigerants; Experimental investigation; Material compatibility (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (45)

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DOI: 10.1016/j.apenergy.2019.02.086

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