Hi! This is my IELTS task 1 essay. Pls! check this for me! thanks in advance.

The figure illustrates the operation of a central heating system in domestic. It shows how the cold water become hot water and warm up the house by using tubes, radiators, pump and boiler.
Firstly, the cold water gets into the house. It flows through the pipeline to enter the storage tank which is hung on the roof of the house. From there, it streams down to the boiler which is use gas or oil to heat up the water. After move through the boiler, cold water turns into hot water which is pumped to radiators. The radiators with many small tubes place in many rooms to distribute the heat to all corners of the house. When the hot water runs around the house, its heat is released and it becomes colder .The colder water flow back to the boiler to be heated up again. A part of hot water moves through the pipeline to the taps for other daily activities.
((160 words))