Correlations for the Viscosity and Thermal Conductivity of Ethyl Fluoride (R161)

Area of Science:

• Thermodynamics
• Fluid Properties
• Chemical Engineering

Background:

• Accurate thermophysical property data are crucial for chemical process design and optimization.
• Ethyl fluoride (R161) is an important industrial chemical, necessitating reliable property correlations.
• Existing data for R161's viscosity and thermal conductivity may lack sufficient accuracy or range.

Purpose of the Study:

• To develop and present new, wide-ranging correlations for the viscosity and thermal conductivity of ethyl fluoride (R161).
• To ensure these correlations are consistent with a recently published equation of state for R161.
• To provide accurate property predictions for R161 across a broad range of temperatures and pressures.

Main Methods:

• Critically evaluating and compiling experimental data for ethyl fluoride viscosity and thermal conductivity.
• Developing mathematical correlations based on the evaluated experimental data.
• Validating the correlations against independent data and ensuring consistency with the equation of state.

Main Results:

• New correlations for viscosity and thermal conductivity of ethyl fluoride (R161) were established.
• Correlations are valid for temperatures from 130 K to 450 K and pressures up to 100 MPa.
• Estimated uncertainties are within 2-3% for viscosity and thermal conductivity in specified ranges.

Conclusions:

• The developed correlations provide accurate and reliable values for ethyl fluoride's viscosity and thermal conductivity.
• These correlations enhance the predictive capabilities for R161 properties, especially when used with the associated equation of state.
• The correlations are suitable for engineering applications within the defined operational ranges, with awareness of increased uncertainty near the critical region.