The diagram below shows how a central heating system in a house works. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The following diagram shows the working of a conventional heating mechanism in a house.

Overall

, it is a cyclic process where the cold

water

is heated and flown through the radiators that are installed throughout the home, and when

this

water

gets cold, it is again reheated and distributed. The first step in the process involves the storage of the

water

in large tanks, and

then

this

stored

water

is transferred to a smaller tank where it awaits to be heated. In the next step, the

water

is sent to the boiler, where it is heated until the

water

reaches the boiling state.

Additionally

, petroleum or compressed natural gas is used as a source of fuel. The third step involves the circulation of warm

water

throughout the home, and

this

is made possible through the use of a pump.

This

pump exhibits a strong force which enables the

water

to flow through the radiators.

Then

, when the radiators are filled with hot

water

, they inhale the cold air and transform it into a warm and cosy environment.

Moreover

, both tanks have external overflow pipes which

disposes

Change the verb form

dispose

show examples

of additional

water

through the taps.