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New thermodynamic mixture models for HFO-containing blends.

Number: 2114

Author(s) : BELL I. H.

Summary

With the modern use of fluorinated olefins as refrigerants, there is a pressing need for reference thermodynamic models to design components and cycles. Recent activities at NIST are summarized, including a survey of existing literature data and results from experimental measurements. Measurements of bubble point pressure, speed of sound, and density on a selection of new blends were carried out. Finally, new thermodynamic models compatible with REFPROP 10.0 were developed. Included in this set are the binaries R-1234yf/134a, R-1234yf/1234ze(E), and R-134a/1234ze(E). The extremely high accuracy of the measurements (particularly the measurements of density and speed of sound) have allowed us to identify deficiencies in the existing reference pure fluid equations of state.

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Pages: 9 p.

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Details

Original title: New thermodynamic mixture models for HFO-containing blends.
Record ID : 30030470
Languages: English
Subject: HFCs alternatives
Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
Publication date: 2022/07/10

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Indexing

Themes: HFO et HCFO;
Blends;
Thermodynamics and changes of state
Keywords: HFO; Thermodynamic property; Mixture; R1234yf; R1234ze(E); R134a; Modelling