Kidde Fire Systems ECS User Manual

General Information
06-236115-001 1-5 October 2014
1-2.2.5 Storage
HFC-227ea is stored in steel containers at 360 PSIG at 70°F (25 bar at 21°C) as a liquid with
nitrogen added to improve the discharge characteristics. The pressure of the stored HFC-227ea
varies substantially with temperature changes, as illustrated in Figure 1-1. When discharged,
the HFC-227ea liquid vaporizes at the discharge nozzles and is uniformly distributed as it
enters the fire area.
Figure 1-1. HFC-227ea Pressure/Temperature Curve Isometric Diagram
Table 1-1. HFC-227ea Select Physical Properties, U.S. Units
Description Units Measurement
Molecular Weight N/A 170.03
Boiling Point at 1 atm °F 2.59
Heat of Vaporization at Boiling Point Btu/lb. 56.7
Vapor Pressure at 75 °F psi 65.9
Liquid Density at 77 °F
lb./ft
3
37.1
For more properties, see NFPA 2001
Table 1-2. HFC-227ea Select Physical Properties, Metric Units
Description Units Measurement
Molecular Weight N/A 170.03
Boiling Point at 1 atm °C -16.3
Heat of Vaporization at Boiling Point kJ/kg °C 132.6
Vapor Pressure at 25 °C kPa 454.7
Liquid Density at 25 °F
kg/m
3
594.2
For more properties, see NFPA 2001
Temperature (°F)
Pressure (PSIG)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
020
40 60 80 100 120 140 160 180
50 lb./cu ft.
65 lb./cu ft.
70 lb./cu ft.
72 lb./cu ft.
75 lb./cu ft.

Kidde Fire Systems ECS Specifications

General

Brand	Kidde Fire Systems
Model	ECS
Category	Fire Extinguisher
Language	English