Question

Why starting valve is closed and valve 2 is opened while taking boiler on range in Benson boiler?

(a) Avoid excessive heating of tube

(b) To maintain the constant flow of water

(c) To avoid pressure built up in tubes

(d) To avoid pipe leakages at joints

This question was posed to me in semester exam.

My doubt is from Types of High Pressure Boilers in portion Steam Generators & Accessories of Energy Engineering

Answer 1

The correct option is (a) Avoid excessive heating of tube

The best I can explain: The boiler is started from cold by circulating the feed water from the hot well by operating the starting valve. While taking the boiler on range, starting valve is closed and valve 2 is opened. This method avoids excessive heating of tubes.