1. It is fitting which is necessary for the operation and safety of a boiler
It is installed below the boiler’s water level, to extinguish a fire in the event of water level in the
boiler shell falling below a certain specified limit
2.
direct method:
• Does not give clues to the operator as to why the efficiency of a system is lower
• Does not calculate various losses accountable for various efficiency levels
Indirect Method:
• Drawbacks in direct method overcome by indirect method it’s also called as heat loss
method.
• Measure all the losses associated with the boilers, and subtracting from 100 give the
boiler efficiency
