Question

what is ocean thermal energy? give its advantages and disadvantages

Answer 1

Ocean Thermal Energy Conversion (OTEC) is a process that can produce electricity by using the temperature difference between deep cold ocean water and warm tropical surface waters. OTEC plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity.

ADVANTAGES:-Power from OTEC is continuous, renewable and pollution free.

Unlike other forms of solar energy, output of OTEC shows very little daily or seasonal variation.

Drawing of warm and cold sea water and returning of the sea water, close to the thermocline, could be accomplished with minimum environment impact.

Electric power generated by OTEC could be used to produce hydrogen.

DISADVANTAGES:-Capital investment is very high.

Due to small temperature difference in between the surface water and deep water, conversion efficiency is very low about 3-4%.

Low efficiency of these plants coupled with high capital cost and maintenance cost makes them uneconomical for small plants.

hope it helps you

Answer 2

Ocean thermal energy and its benefits

Explanation:

• Ocean thermal energy is that the energy obtained from the ocean thanks to the distinction in temperature of the water at completely different depths of the ocean/sea. giant tubes containing Associate in Nursing liquid with low boiling/evaporation purpose square measure used like ammonia.
• Once thanks to the warmth commissioned military officer the ocean the ammonia evaporates it moves alittle rotary engine to get electricity. there square measure some issues with this supply of energy because the temperature of the water should be higher than thirty degrees to form the device work and therefore the price and maintenance square measure terribly high and doesn't offer a considerable quantity to electricity.
• Advantages of ocean thermal energy:  Ocean thermal energy may be a renewable supply of energy. It are often used unendingly for twenty-four hours on a daily basis throughout the year with the insufficient current price. It generates electricity while not the emission of greenhouse gases.
• Disadvantages of ocean thermal energy:  The cost of installation of the device and maintenance of the ability plant is high. It causes disruptions within the aquatic system. A constant offer of heat and cold water is needed. So, the plant are often in-built solely appropriate for tropical locations.