Question

When is it difficult to maintain the pressure inside the boiler?

(a) When steam demand is fluctuating

(b) When steam demand is high

(c) When steam demand is low

(d) When steam demand is constant

The question was posed to me in final exam.

This interesting question is from Boiler Mounting Accessories topic in portion Steam Generators & Accessories of Energy Engineering

Answer 1

Right answer is (a) When steam demand is fluctuating

To explain I would say: Whenever the steam demand is fluctuating, it becomes very difficult to maintain uniform pressure. In such of these cases pressure reducing valve is made utilized by connecting to steam supply line. Function of the pressure reducing valve is to maintain constant pressure on the delivery side of the valve with the fluctuating boiler pressure.