Production of electricity using Ocean Thermal Energy Conversion

IELTS Academic Writing Task 1 with answer.

You should spend about 20 minutes on this task.

The diagram below shows the production of electricity using a system called Ocean Thermal Energy Conversion (OTEC).

Write a report for a university lecturer describing the information below.

You should write at least 150 words.
production of electricity

Sample Answer:
The given illustration depicts the process of  electricity production by Ocean Thermal Energy Conversion, OTEC in short. As is observed from the given graph, the OTEC system of electricity production usages the Sunlight and sea water to finally produce the electricity.

According to the diagram, sunlight heats up the sea water and the warm water then turns in to vapour at around 29 degree Celsius. The evacuated evaporation chamber is places near the sea water so that the water that turns into vapour from solar energy can pass through a turbine. Sea water which is evaporated is saltless and passes through the turbine and that creates the electricity. During evaporation, the salty water is stored in a lower portion of the ‘evaporated evaporation chamber’ and from there it is passed through a rectangular condensing chamber that filters the pure drinking water from waster salt water. The whole OTE structure is placed inside the sea water of 100 meter and the water evaporation occurs in 29 degree Celsius temperature while the water purification is done using deeper and cooler sea water which is usually 5 degree Celsius.

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