ielt task 1-bieu do diagram sample 80

Question

The diagram below shows how the central heating system in the house works

The diagram illustrates an overview of domestic house heating system.

As can be seen from the chart, there are 3 main stages to ensure water to the radiators and taps through pipes ,a boiler and a tank.

The process begins with the cold water from both the outside and the water tank in the top roof  being stored by the storage tank .From there, the water  flows down to the boiler ,located on the ground floor. Besides, the boiler, which is fuelled by gas and oil,heats the water as it passes through. Through the pipes , the water is then pumped around the house and   circulated through the radiators ,which have small tubes inside them to help contribute the heat and warm up  each room .  Meanwhile, some water is directed to the taps to provide hot water for the house.

As the water has been through the pipes and radiators, it is returned to the boiler to be reheated and circulated around the house again.

Answer 1

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This diagram provides an overview of a domestic central heating system. It shows how the tank, boiler and pipes ensure a constant flow of hot waterto both the radiators and the taps.

The cold water enters the house and is stored in a water storage tank in the roof. From there ü flows down to the boiler, located on the ground floor of the house.

The boiler, which is fuelled by gas or oil, heats up the water as it passes through it. The hot water is then pumped round the house through a system of pipes and flows into the radiators, located in different rooms. The water circulates through the radiators, which have small tubes inside them to help distribute the heat, and this warms each of the rooms. Some of the water is directed to the taps to provide hot water for the house.

Once the water has been through the pipes and radiators, it is returned to the boiler to be re-heated and circulated round the house again.