Flashcards in Low Pressure Steam Systems Deck (10)
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0
What is the definition of a counterflow main LP steam system?
Condensate returns to the boiler against the steam flow in the horizontal main
1
What would best describe the system in fig 27?
One pipe Gravity system
2
How is a two pipe Gravity return system balanced so the steam will fill each radiator at approx same time
By proper sizing of the orifice in the air vent
3
What is the name of the system in which a self-induced vacuum can occur?
Vapour
4
What will occur if the automatic water feeder cannot keep up with the rate of steam evaporation from the boiler
The low water cut-off will shut off the fuel source
5
What could result of a high water level reduces the available steam space at the top of the boiler
Priming and carryover with possible water hammer
6
Why are residential one-pipe Gravity return system designs for a maximum of a 1/2" pressure drop a cross the system
To maintain low steam velocities in the system
7
If the volume of steam flow per hr is known, what else do you need to know to calculate the probable velocity in a pipe?
Cross sectional area of the pipe
8
How should eccentric reducers be installed in lines used for condensable vapours
Flat on the bottom
9
