Modified Equation of State Applied to Refrigerants: Part II

Document Type : Research Paper

Author

• seyyed mostafa Hoseini

Young Researchers and Elite Club, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran

Abstract

The present work is the successful extension of an improved equation of state (EOS) to refrigerant fluids. The objective is the prediction of isothermal and saturated liquid densities of refrigerants. Two temperature-independent parameters appearing in the modified EOS are closely related to critical point properties of refrigerant fluids. Our results showed that, the proposed EOS can predict well isothermal and saturated liquid destinies of studied refrigerants over the temperature range from 100-400 K and pressures up to187 MPa, with AADs equal to 2.16% and 2.66%, respectively. The surface tensions and sound velocities of saturated refrigerants were also estimated through the simple relations with AADs equal to 4.76% and 5.66%.

Keywords

• Equation of state
• Refrigerant
• Speed of sound

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178 S. M. Hoseini/ Journal of Physical Chemistry and Electrochemistry Vol.2 No.4 (2014) 173-178