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Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures.


pdf icon Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures. (1266 K)
Yang, J. C.; Vazquez, I.; Boyer, C. I.; Huber, M. L.; Weber, L.

International Journal of Refrigeration, Vol. 20, No. 2, 96-105, 1997.

Keywords:

halon alternatives; nitrogen; thermodynamic properties; equations; experimental design; thermophysical properties

Abstract:

Experimental measurements of selected thermodynamic properties of alternative agent/nitrogen mixtures were performed. The selected alternatives were HFC-227 ea (C3HF7), CF3I, FC-218 (C3F8), and HFC-125 (C2HF5); CF3Br was also included as a reference. A thermodynamic model based on an extended corresponding states principle was used. The model predictions were generally found to be within 10% or less of the experimental measurements. The model can be used as a computational tool for designers of fire extinguishers to obtain pressure-temperature relationships for selected halon alternative/nitrogen mixtures.