نمونه ای از رایتینگ آکادمیک بخش اول نمره 9

استاد حامد رفیعی دکتری ادبیات انگلیسی و نویسنده کتاب رایتینگ آیلتس

اشاره

در این نمونه رایتینگ سعی شده است که بخش مهمی از رایتینگ آکادمیک به همراه حل آن به شما ارائه شود.

You should spend about 20 minutes on this task.

The diagram below shows the production of steam using a gas cooled nuclear reactor.

Summarise the information by selecting and reporting the main features, and make

comparisons where relevant.

 

Write at least 150 words.

model answer:

A gas-cooled nuclear reactor consists of the reactor itself and a heat exchanger. The reactor contains

uranium fuel elements which are surrounded by graphite moderators and topped by charge tubes for

loading fuel elements, and boron control rods. The whole reactor is contained in a pressure vessel

surrounded by a concrete shield.

From the reactor the hot gas flows through a duct into the heat exchanger which is outside the

concrete radiation shielding. In the heat exchanger, steam is generated in a secondary loop. There a

pipe brings in water which is heated to steam, and this then flows out to the turbo-alternator.

Meanwhile the hot gas sinks to the bottom of the heat exchanger and passes through a gas blower

which pushes it into a cool gas duct and back to the reactor.

As can be seen, this is a continuous cycle that keeps the reactor from overheating, while carrying away

the heat and steam, which will power the turbines.

(161 words)

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