Refrigeration cycle analysis on natural refrigerants - substitutes for R12, R13 and R22

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Abstract

Thermophysical and ecological characteristics of natural refrigerants — substitutes for CFC and HCFC — are considered. Main characteristics of the refrigerating cycle during operation on the substitutes of R12, R13 and R22 are presented. Vivid comparison of substituting refrigerants by their volumetric refrigerating effect and the temperature in the compressor outlet is given. In conclusion, recommendations on the use of particular alternative refrigerants are presented, and in is shown that it is impractical for the countries of CIS to take out of use HCFC refrigerants before the appointed time (prior to 2030).

About the authors

O. V. Belyaeva

Institute of Energy Problems of the Institute of Nuclear Power Engineering of the National Academy of Sciences of Belarus

Author for correspondence.
Email: info@eco-vector.com

PhD in Engineering

Belarus, Minsk

A. Zh. Grebenkov

Institute of Energy Problems of the Institute of Nuclear Power Engineering of the National Academy of Sciences of Belarus

Email: info@eco-vector.com

PhD in Engineering

Belarus, Minsk

B. D. Timofeev

Institute of Energy Problems of the Institute of Nuclear Power Engineering of the National Academy of Sciences of Belarus

Email: info@eco-vector.com

D. in Technical Sciences, Professor

Belarus, Minsk

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2. Fig. 1. Relative specific volumetric refrigerating capacity of ozone-safe refrigerants at different boiling points (compared to R12)

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3. Fig. 2. Relative temperature of ozone-safe refrigerants at the compressor outlet at different boiling points (compared to R12)

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4. Fig. 3. Relative specific volumetric refrigerant capacity at different evaporator temperatures (compared to R22)

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5. Fig. 4. Relative temperature of refrigerants at the compressor outlet at different temperatures in the evaporator (compared to R22)

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6. Fig. 5. Relative specific volumetric refrigerating capacity at t0 = -90◦C u tk= 30°C (compared to R13)

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7. Fig. 6. Relative temperature of refrigerants at the compressor outlet at t0 = -90°C u tk=-30◦C (compared to R13)

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Copyright (c) 2003 Belyaeva O.V., Grebenkov A.Z., Timofeev B.D.

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