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Thermal properties model for the new refrigerant HFO-1234yf.

[In Chinese. / En chinois.]

Author(s) : JIANG K., LIU Y., JIANG S.

Type of article: Article

Summary

Based on Peng-Robinson general state equation, combined with group contribution principle and a polynomial method, the thermal state model of the new LGWP refrigerant HFO-1234yf was established and validated with required accuracy. By using computer programming, the state models were solved by mathematic software and complete thermal properties of refrigerant were obtained. The thermal properties of HFO-1234yf were compared with R417A and R134a, and the results showed that the saturated vapor pressure and the specific heat capacity under constant pressure of HFO-1234yf has a similar performance as R134a. Both the saturated vapor pressure of both HFO-1234yf and R134a are lower than R417A, and the saturated state enthalpy of HFO-1234yf is lower than R417A, which is why the HFO-1234yf system can not have a higher performance coefficient. The models could act as a theoretical basis for the application of HFO-1234yf in automotive air conditioning and fixed refrigeration equipment.

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Pages: 37-42

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