Question

What is inside a boiler?

Answer 1

Answer:

The boiler is the most important part of a central heating system. ... A valve opens, gas enters a sealed combustion chamber in the boiler through lots of small jets, and an electric ignition system sets them alight. The gas jets play onto a heat exchanger connected to a pipe carrying cold water.

Answer 2

Answer:

• The fuel is one of the most important aspects of a boiler and is what burns inside the boiler to generate the heat. There are many different sources that can be used. Coal is a standard fuel source. ... Electric can be used as a heat source, either by resistance heating coils or electrode units.