- Author
-
Yang, J. C.
|
Huber, M. L.
|
Boyer, C. I.
- Title
- Model for Calculating Alternative Agent/Nitrogen Thermodynamic Properties.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
National Institute of Standards and Technology, Boulder, CO
- Book or Conf
- Halon Options Technical Working Conference. Proceedings. HOTWC 1995. May 9-11, 1995,
Albuquerque, NM,
137-145 p.,
1995
- Keywords
-
computer models
|
pressure
|
temperature
|
thermophysical properties
|
halon alternatives
- Identifiers
- PROperties of Fire Suppression SYstems (PROFISSY)
- Abstract
- A thermodynamic model based on the extended corresponding states principle has been developed to calculate the solubilities of nitrogen in five selected agents, HFC-227ea, CF₃I, FC-218, HFC-125, and CF₃Br and the pressure-temperature relationship for agent/nitrogen mixtures. The model only requires four pieces of input information: (1) agent mass, (2) vessel volume, (3) fill temperature, and (4) either nitrogen mass needed to pressurize the vessel or the fill pressure of the vessel. Comparing to the experimental data obtained at 150 deg C and -60 deg C, the model predictions were generally found to be within 10% or less of the experimental measurements.