THERMODYNAMIC EFFICIENCY OF LOW GWP AZEOTROPIC REFRIGERANT MIXTURES

Authors

  • С. В. Артёменко Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082, Ukraine
  • Ю. В. Семенюк Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082, Ukraine
  • В. П. Железный Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082, Ukraine
  • В. А. Мазур Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082, Ukraine
  • Н. Кокс «Earthcare Products Limited», 405, Mill Studio, Crane Mead, Ware, Herts, UK, SG12 9PY, United Kingdom
  • Д. Коулборн Re-phridge, PO Box 4745, Stratford-upon-Avon, Warwickshire, UK, CV37 1FE, United Kingdom

DOI:

https://doi.org/10.18198/j.ind.gases.2010.0482

Keywords:

Low GWP blends, Azeotrope, Phase equilibria, Thermodynamic efficiency, R1270/161, R170/717, R600a/161, Refrigerating machine, Heat pump

Abstract

The results of azeotropic mixtures research with a normal boiling point between —40 °C and –80 °C are stated. The aims were to design refrigerants of the fourth generation and to match the saturated pressure-temperature characteristics and refrigerating capacity of existing refrigerants within this range. There have been selected three azeotropic mixtures R1270/161 (propene/fluoroethane), R170/717 (ethane/ammonia), and R600a/161 (isobutane/fluoroethane) of a large number of potential combinations, all formed from natural refrigerants or synthetic chemicals with a global warming potential GWP<150. Each of these has distinct characteristics and is suited to certain types of applications. Experimental measurements of P-T-x-properties were made for mixtures. Based on the results of the measurements, a thermodynamic model was developed using the Peng-Robinson type equation of state to predict the phase behaviour of the full range of compositions, pressures and temperatures. These new blends offer notable advantages over existing refrigerants, in particular: zero ODP and low GWP, below 150, and mainly «naturally» occurring fluids; improved thermodynamic properties (such as critical temperature and minimal temperature glide) over similar existing refrigerants; good solubility with oils; low toxicity, and reduced flammability; known and understood chemical and material compatibility.

Author Biographies

С. В. Артёменко, Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082

S.V. Artemenko

Ю. В. Семенюк, Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082

Yu.V. Semenyuk

В. П. Железный, Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082

V.P. Zhelezny

В. А. Мазур, Одесская государственная академия холода, ул. Дворянская, 1/3, г. Одесса, Украина, 65082

V.A. Mazur

Н. Кокс, «Earthcare Products Limited», 405, Mill Studio, Crane Mead, Ware, Herts, UK, SG12 9PY

N. Cox

Д. Коулборн, Re-phridge, PO Box 4745, Stratford-upon-Avon, Warwickshire, UK, CV37 1FE

D. Colbourne

Downloads

Issue

No. 1 (2010): Технические газы

Section

THERMOPHYSICAL PROPERTIES OF GASES AND THEIR MIXTURES. THERMODYNAMIC ANALYSIS OF PROCESSES IN LOW-TEMPERATURE SYSTEMS

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