Tidal Energy Systems Overview
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What is the main principle behind the operation of a two-basin tidal plant?

  • Creating energy by harnessing solar power
  • Generating electricity through wind energy
  • Storing potential energy by filling an upper basin with water (correct)
  • Using geothermal heat to produce electricity

    • During which phase does the potential energy stored in a tidal plant get released?

  • As the sluice gates are closed
  • When the water levels are equal in both basins
  • During the high tide cycle
  • When water flows from the upper to lower basin (correct)

    • Which factor greatly influences the amount of potential energy available for generation in a tidal range power plant?

  • The tidal range between high tide and low tide (correct)
  • The temperature of the water in the basins
  • The type of turbines used
  • The geographical location of the plant

    • What is the role of sluice gates in a tidal barrage?

    <p>To control the release of water from the upper to the lower basin</p> Signup and view all the answers

    What distinguishes Closed-Cycle OTEC from Open-Cycle OTEC?

    <p>The working fluid being vaporized and condensed in a closed loop</p> Signup and view all the answers

    Which of the following is NOT an advantage of OTEC?

    <p>Requires significant land use for setup</p> Signup and view all the answers

    What element in the operation of a tidal power plant converts mechanical energy into electrical energy?

    <p>Turbines</p> Signup and view all the answers

    Which of the following factors does NOT impact the power developed by a tidal range power plant?

    <p>The design of the turbines</p> Signup and view all the answers

    How does the turbined water flow contribute to electricity generation in a tidal barrage?

    <p>It drives generators to produce electricity</p> Signup and view all the answers

    What primary feature of ocean thermal energy conversion systems allows them to produce power continuously?

    <p>The constant temperature gradient in the ocean</p> Signup and view all the answers

    What principle do tidal stream generators operate on?

    <p>They capture kinetic energy from moving water currents.</p> Signup and view all the answers

    Which type of tidal plant is characterized by exploiting differences in water levels between high and low tides?

    <p>Tidal Range Power Plant</p> Signup and view all the answers

    What is one advantage of tidal stream generators?

    <p>They have less environmental impact.</p> Signup and view all the answers

    How do tidal kite systems generate electricity?

    <p>Using their movement in a figure-eight pattern.</p> Signup and view all the answers

    What is a defining feature of two basin tidal power plants?

    <p>They create a tidal barrage or dam.</p> Signup and view all the answers

    What operation occurs during high tide in a tidal range power plant?

    <p>Water enters the basin creating a tidal range.</p> Signup and view all the answers

    Which of the following types of tidal power plants has a higher potential for energy generation due to a large tidal range?

    <p>Two Basin Tidal Plants</p> Signup and view all the answers

    What type of tidal plant uses tethered underwater kites?

    <p>Tidal Kite System</p> Signup and view all the answers

    Which of the following is NOT an advantage of tidal energy?

    <p>Ability to produce energy at night</p> Signup and view all the answers

    Which type of tidal plant has to consider the movement of water and currents to effectively generate energy?

    <p>Single Basin Tidal Plants</p> Signup and view all the answers

    What is one of the main challenges faced by OTEC systems?

    <p>High initial cost</p> Signup and view all the answers

    In which regions is OTEC most effective?

    <p>Tropical and subtropical regions</p> Signup and view all the answers

    What fluid is commonly used in OTEC systems for vaporization?

    <p>Ammonia</p> Signup and view all the answers

    What occurs in the Evaporator of an Open Cycle OTEC system?

    <p>Warm seawater vaporizes the working fluid</p> Signup and view all the answers

    What is a key difference between Open Cycle and Closed Cycle OTEC systems?

    <p>Open Cycle does not recycle its working fluid</p> Signup and view all the answers

    What happens to the vaporized fluid in the OTEC system after it passes through the turbine?

    <p>It condenses back into a liquid</p> Signup and view all the answers

    What is one of the engineering challenges associated with OTEC systems?

    <p>Material corrosion</p> Signup and view all the answers

    What is the purpose of the Condenser in an OTEC system?

    <p>To condense vaporized fluid back into liquid</p> Signup and view all the answers

    What factor contributes to the limited power density of OTEC systems?

    <p>Temperature differences</p> Signup and view all the answers

    What is a common disadvantage of both Open and Closed Cycle OTEC systems?

    <p>Limited commercial deployment</p> Signup and view all the answers

    What happens to the stored potential energy in the upper basin during low tide in a two-basin tidal plant?

    <p>It is released as water flows to the lower basin.</p> Signup and view all the answers

    Which of the following factors does NOT influence the power output of a tidal range power plant?

    <p>Basin location</p> Signup and view all the answers

    What role does the warm surface water play in the Ocean Thermal Energy Conversion (OTEC) process?

    <p>It vaporizes a low-boiling-point fluid in the heat exchanger.</p> Signup and view all the answers

    Which of the following is a characteristic of tidal barrage power plants?

    <p>They create a barrier between the sea and an estuary.</p> Signup and view all the answers

    Which statement accurately describes the ecological considerations of tidal power plants?

    <p>They can affect local wildlife and their habitats.</p> Signup and view all the answers

    What is a key advantage of using Ocean Thermal Energy Conversion (OTEC)?

    <p>It provides a sustainable and renewable energy source.</p> Signup and view all the answers

    What happens to the vaporized fluid in a closed-cycle OTEC system after it drives the turbine?

    <p>It is condensed back into a liquid.</p> Signup and view all the answers

    During what condition is the upper basin filled in a two-basin tidal plant?

    <p>During high tide.</p> Signup and view all the answers

    Which type of OTEC system utilizes seawater directly for power generation?

    <p>Open-Cycle OTEC</p> Signup and view all the answers

    What is a key factor in determining the potential energy available for electricity generation in tidal power plants?

    <p>The height difference between high tide and low tide</p> Signup and view all the answers

    What is the primary feature of single basin tidal plants?

    <p>Exploiting the kinetic energy of moving water currents</p> Signup and view all the answers

    How do tidal stream generators convert tidal energy into electricity?

    <p>By rotating underwater turbines with tidal currents</p> Signup and view all the answers

    What is an advantage of tidal kite systems compared to traditional tidal plants?

    <p>Greater flexibility in adapting to tidal changes</p> Signup and view all the answers

    What distinguishes a tidal range power plant from other tidal plants?

    <p>It exploits the potential energy from water height differences</p> Signup and view all the answers

    During which condition does a tidal range power plant generate electricity?

    <p>While the tide is receding</p> Signup and view all the answers

    What mechanism is typically used to control water flow in a tidal range power plant?

    <p>Sluice gates within a tidal barrage</p> Signup and view all the answers

    What process is utilized in tidal kite systems to generate electricity?

    <p>Kites move in a figure-eight pattern with the current</p> Signup and view all the answers

    What is a common environmental benefit of tidal energy compared to fossil fuels?

    <p>Lower carbon emissions</p> Signup and view all the answers

    Which factor relates to the energy generation capacity of a tidal range power plant?

    <p>Difference in water levels between tides</p> Signup and view all the answers

    What is a significant operational aspect of tidal stream generators?

    <p>They are dependent on the horizontal movement of water</p> Signup and view all the answers

    What is a primary challenge in the construction of OTEC plants?

    <p>High initial cost</p> Signup and view all the answers

    In which regions is Ocean Thermal Energy Conversion (OTEC) most effective?

    <p>Tropical and subtropical regions</p> Signup and view all the answers

    Which statement is true about Open Cycle OTEC systems?

    <p>They utilize seawater directly as the working fluid.</p> Signup and view all the answers

    What causes the vaporized fluid in an Open Cycle OTEC system to drive a turbine?

    <p>Heating from warm surface seawater</p> Signup and view all the answers

    What significant engineering obstacle is associated with OTEC systems?

    <p>Managing biofouling and corrosion</p> Signup and view all the answers

    What is the function of the Condenser in an OTEC system?

    <p>To absorb heat from cold seawater</p> Signup and view all the answers

    Which of the following best describes the key difference between Open Cycle and Closed Cycle OTEC systems?

    <p>Closed Cycle has a continuous recycling of working fluid.</p> Signup and view all the answers

    What is the impact of limited power density in OTEC systems?

    <p>It restricts the amount of electricity they can generate.</p> Signup and view all the answers

    Which low-boiling-point fluid is commonly used in OTEC systems for vaporization?

    <p>Ammonia</p> Signup and view all the answers

    What advantage does Closed Cycle OTEC have over Open Cycle OTEC?

    <p>Ability to operate in a wider range of temperatures</p> Signup and view all the answers

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