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 diagram depicts the way in which a central heating system in a house works.

Overall

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, there are four stages in order to circulate the

water

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for heating purposes, commencing with storing, followed by heating, and

finally

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circulating. In the initial stage, cold

water

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flows into the house through a pipe.

Subsequently

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, it is

then

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heatedthen

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heated then

heat in a boiler (a machine that can be used to raise the

water

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temperature) before pumping into the surrounding house. There are two ways to heat the

water

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using a gas or an oil fuel. After that, hot

water

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flows into radiators that have many small tubes and circulates into all the corners of the building. In the subsequent stage, the hot

water

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that has already been used becomes cold and it is afterwards circulated to the storage

tank

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. Once the storage

tank

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is full, the

water

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passes through the

water

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tank

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by an overflow pipe to collect the overflowing liquid. In the meantime, the

water

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in the storage

tank

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is

also

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used as hot

water

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for taps.