Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures.
Measured and Predicted Thermodynamic Properties of
Selected Halon Alternative/Nitrogen Mixtures.
Yang, J. C.; Vazquez, I.; Boyer, C. I.; Huber, M. L.;
International Journal of Refrigeration, Vol. 20, No. 2,
halon alternatives; nitrogen; thermodynamic properties;
equations; experimental design; thermophysical
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