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What should be the temperature difference between the upper layers and deeper layers of the ocean for setting up the OTEC power plant?

What should be the temperature difference between the upper layers and deeper layers of the ocean for setting up the OTEC power plant? Correct Answer <span style="">20°C</span>

The correct answer is 20°C.

Key Points

  • The temperature difference between upper layers and deeper layers of the ocean for setting up an OTEC power plant should be 20°C. 
    • Since ocean thermal energy is generated due to a difference in temperatures, for an OTEC plant to be installed, a temperature difference of 20oC is required.

Additional Information

  • 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.

Related Questions

Which of these statements are correct?
1. Ocean currents are the slow-surface movement of water in the ocean
2. Ocean currents assist in maintaining the Earth's heat balance
3. Ocean currents are set in motion primarily by prevailing winds
4. Ocean current are affected by the configuration of the ocean
Which of these statements are correct?
1. Ocean currents are the slow- surface movement of water in the ocean.
2. Ocean currents assist in maintaining the Earth's heat balance.
3. Ocean currents are set in motion primarily by prevailing winds.
4. Ocean currents are affected by the configuration of the ocean.
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Over millions of years, the Colorado River wore away rocks as it passed through the area. P. Each layer of rock has a different depth and color. Q. The canyon is made of layers of rock. R. Slowly, the river made the path deeper and deeper.  S. Now, the canyon is surrounded by steep walls on either sides. 6. Geologists have identified almost 40 different layers of rock exposed by the river’s erosion.
Consider the following statements regarding 'setting of cement': 1. Low-heat cement sets faster than OPC. 2. Final setting time decides the strength of cement. 3. Initial setting time of Portland PozzoIlona is 30 minutes. 4. Air-induced setting is observed when stored under damp conditions. 5. Addition of gypsum retards the setting time. Which of the above statements are correct?
Which of the following pair of 'ocean currents-ocean' is correct? I. Gulf Stream - Atlantic Ocean II. Labrador Current - Pacific Ocean III. Peru Current - Indian Ocean
Which of the following pairs of ‘Ocean currents - Ocean’ is correct? I. Gulf stream - Atlantic Ocean II. Labrador current - Pacific Ocean III. Peru current - Indian Ocean
With reference to Ocean currents consider the following statements:
1. West Australian current is a warm current.
2. North East Monsoon Drift flows in the Indian Ocean during winter season.
3. Equatorial counter current does not flow in the Indian Ocean during winter season.
4. Kuroshic current in the Pacific Ocean is like Gulf Stream in the Atlantic Ocean.
La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 1. La Nina is characterized by unusually cold ocean temperature in the equatorial Indian Ocean whereas El Nino is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean. 2. El Nino has an adverse effect on the south-west monsoon of India, but La Nina has no effect on the monsoon climate. Which of the statements given above is/are correct? 
La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino ?
1. La Nina is characterised by un-usually cold ocean temperature in equatorial Indian Ocean whereas El Nino IS characterised by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.
Which of the statements given above is/are correct?
By how much the temperature (in degree celcius) of ocean surface should be greater than that of water below 1 km of the surface for producing OTEC (Ocean Thermal Energy Conversion) Energy?