Ocean Thermal Energy Concepts

The video tutorial explains ocean thermal energy, a form of ocean energy that utilizes the temperature difference between warm surface water and cold deep water to generate electricity. The process involves using a volatile liquid like ammonia, which vaporizes and drives a turbine to produce electricity. The cycle is completed by condensing the vapor back into liquid. Ocean thermal energy is renewable and abundant but requires significant capital investment and has low efficiency. The first ocean thermal energy conversion plant was established in Japan in 2013 for research purposes.

What causes the temperature difference in ocean thermal energy?

• The rotation of the Earth

• The sun's heat on the ocean surface

• The ocean currents

• The gravitational pull of the moon

What is the role of ammonia in ocean thermal energy conversion?

• It acts as a coolant

• It is used to store electricity

• It boils and turns into vapor to drive turbines

• It absorbs sunlight

How is the vapor converted back to liquid in the ocean thermal energy cycle?

• By using deep cold water

• By exposing it to sunlight

• By cooling it with surface water

• By compressing it

What is a major advantage of ocean thermal energy?

• It is highly efficient

• It is renewable and continuous

• It is limited in supply

• It is non-renewable

What is a significant drawback of ocean thermal energy?

• High operational costs

• High capital investment

• Limited availability of resources

• High environmental impact

What is the efficiency range of ocean thermal energy conversion?

• 5-6%

• 3-4%

• 20-25%

• 10-15%

Where was the first ocean thermal energy conversion plant built?

• Japan

• India

• Australia

• United States

What year was the first ocean thermal energy conversion plant established?

• 2010

• 2013

• 2015

• 2018

What was the primary purpose of the first ocean thermal energy conversion plant?

• To generate commercial electricity

• To conduct research

• To desalinate water

• To power marine vehicles