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Which is the working fluid in open cycle?

(a) Propane

(b) Water

(c) Engine oil

(d) ISO-butane

The question was asked at a job interview.

The origin of the question is Ocean Thermal Energy Conversion topic in portion Ocean Energy & Geothermal Energy of Energy Engineering

1 Answer

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Best answer
Right option is (b) Water

For explanation: In the open/Claude cycle, water is the working fluid. The warm water surface water is caused to boil by lowering the pressure, without supplying any additional heat. The low pressure steam produced then, drive’s the turbine and the exhaust steam is condensed by the deep colder water is discarded.

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