Example: Safety Valve
The mass flow limitation must be considered for the design of safety valves. As an example we consider a steam boiler that produces 10t/ h of saturated vapor at p0 = 15 bar (so that T0 = 471 K). In case of emergency, all steam produced must be discharged through a safety valve. We compute the mini- mum cross section the valve can have under the assumption that the steam can be described as an ideal gas with constant specific heats and k = 1.135. Solving (14.31) for the cross section gives, with the ideal gas law p0 = ρ0RT0,
Related posts:
Heat Pumps:Reversing Valve and Solenoid
Example: Friction Loss
Heat Pumps:Heat Pump Operating Instructions
Other Automatic Controls:Fan Relays
MOTORS:THE FIELD DISCHARGE RESISTOR,CONSTANT SPEED OPERATION AND POWER FACTOR CORRECTION.
HEATING SYSTEMS:HOT-WATER HEATING
Coal Firing Methods:Transmission Overload Protection and Removal of Obstruction
Gas Engines:Compression with Intercooling
Coal Furnaces,Wood Furnaces, and Multi-Fuel Furnaces:Chimneys and Chimney Troubleshooting