Non conventional energy sources
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Ocean thermal energy conversion (OTECH) harnesses the temperature difference between warm surface waters and cold deep waters to run a heat engine and generate electricity. It works by using the warm upper ocean layer as a heat source to vaporize a working fluid like ammonia or propane, which then drives a turbine connected to a generator. The low pressure exhaust is then condensed back into a liquid using the cold water from the deep ocean and pumped back to repeat the process. While a promising renewable source of base load power, OTECH plants face challenges in efficiency due to pumping losses and high costs compared to other energy sources.
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Non – conventional energy sources
The document discusses tidal energy and tidal power plants. Tidal power uses dams and turbines to harness the kinetic energy of tidal flows. There are different methods, including single basin arrangements that generate power on either the ebb or flood cycle, and double basin arrangements that provide continuous power with an upper and lower reservoir. While tidal power is renewable and pollution-free, development is limited by the need for suitable coastal locations, and construction and operation in the sea is challenging.
Tidal energy
This document discusses tidal energy and its components and operation methods. It provides a brief history of tidal energy, noting that the first tidal power plant was built in 1966 in France and generates 240MW. The key components of a tidal power plant are the power house, a dam or barrage, and sluice-ways. There are different methods for operating tidal systems, including single and double basin arrangements. The document also covers storage options, advantages like predictability and no emissions, limitations such as high construction costs, and prospects for tidal energy development in India.
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tidal power plant.
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Tidal power harnesses the natural energy of tides to generate electricity using turbines. It consists of a turbine, generator, duct and removable cover anchored to the seafloor. Tidal power plants can be constructed by building dams or installing towers, with the largest dam-based plant in France. The best locations have strong, predictable tides and are in deep water away from coasts to avoid fishing and wildlife impacts. Tidal power has advantages of being clean, predictable energy without weather impacts, but disadvantages include limited resources, noise pollution effects on animals, and sediment damage risks to turbines.
Ocean thermal energy conversion
This document summarizes different types of non-conventional energy resources, including ocean thermal energy conversion (OTEC), ocean wave energy, and tidal power. It describes the open and closed cycles used in OTEC that utilize temperature differences between warm surface water and cold deep water. For wave energy, it discusses how waves form and the oscillating water column technology that uses wave motion to drive turbines. It also notes the challenges in developing these technologies, including high costs. The document provides examples of OTEC and wave energy projects around the world.
Tidal power generation
This document discusses tidal power generation. It describes the different types of tides and methods for generating tidal energy, including tidal stream generators, tidal barrages, dynamic tidal power, and tidal lagoons. It also discusses tidal turbines, present tidal power plants worldwide, environmental concerns, and advantages of tidal power. The key methods discussed are tidal barrages, which use dams to capture potential energy of tides, and tidal turbines, which resemble wind turbines and can be placed in tidal currents. Environmental concerns include impacts on estuary ecosystems and risks to fish.
Ocean thermal energy conversion
OTEC utilizes the temperature difference between warm surface waters and cold deep ocean waters to generate electricity. Using the Rankine cycle, warm water is used to evaporate a working fluid like ammonia in a heat exchanger, the vapor then drives a turbine which powers a generator before being condensed back into a liquid using cold deep water. While OTEC provides clean energy and fresh water, the large infrastructure needs and costs have limited its commercial development to date.
Tidal energy
Tidal energy can be harnessed by constructing dams or barrages between tidal basins and the sea. During high tide, seawater fills the basin through sluice gates and turbines. During low tide, the water flows back to the sea through the turbines, turning them to generate electricity. There are different types of tidal power plants based on the number of basins and generation cycles. Single basin one-way plants generate power during ebb tides only, while double basin plants alternate generation between two basins to provide continuous power. Tidal energy is a renewable source but has high capital costs and generation varies with tidal patterns.
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Non – conventional energy sources
The document discusses tidal energy and tidal power plants. Tidal power uses dams and turbines to harness the kinetic energy of tidal flows. There are different methods, including single basin arrangements that generate power on either the ebb or flood cycle, and double basin arrangements that provide continuous power with an upper and lower reservoir. While tidal power is renewable and pollution-free, development is limited by the need for suitable coastal locations, and construction and operation in the sea is challenging.
Tidal energy
This document discusses tidal energy and its components and operation methods. It provides a brief history of tidal energy, noting that the first tidal power plant was built in 1966 in France and generates 240MW. The key components of a tidal power plant are the power house, a dam or barrage, and sluice-ways. There are different methods for operating tidal systems, including single and double basin arrangements. The document also covers storage options, advantages like predictability and no emissions, limitations such as high construction costs, and prospects for tidal energy development in India.
Tidal energy
Types of tidal plants such as
single and two basin plants, power developed and operation of
tidal power plant.
Tidal power 7
Tidal power harnesses the natural energy of tides to generate electricity using turbines. It consists of a turbine, generator, duct and removable cover anchored to the seafloor. Tidal power plants can be constructed by building dams or installing towers, with the largest dam-based plant in France. The best locations have strong, predictable tides and are in deep water away from coasts to avoid fishing and wildlife impacts. Tidal power has advantages of being clean, predictable energy without weather impacts, but disadvantages include limited resources, noise pollution effects on animals, and sediment damage risks to turbines.
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This document summarizes different types of non-conventional energy resources, including ocean thermal energy conversion (OTEC), ocean wave energy, and tidal power. It describes the open and closed cycles used in OTEC that utilize temperature differences between warm surface water and cold deep water. For wave energy, it discusses how waves form and the oscillating water column technology that uses wave motion to drive turbines. It also notes the challenges in developing these technologies, including high costs. The document provides examples of OTEC and wave energy projects around the world.
Tidal power generation
This document discusses tidal power generation. It describes the different types of tides and methods for generating tidal energy, including tidal stream generators, tidal barrages, dynamic tidal power, and tidal lagoons. It also discusses tidal turbines, present tidal power plants worldwide, environmental concerns, and advantages of tidal power. The key methods discussed are tidal barrages, which use dams to capture potential energy of tides, and tidal turbines, which resemble wind turbines and can be placed in tidal currents. Environmental concerns include impacts on estuary ecosystems and risks to fish.
Ocean thermal energy conversion
OTEC utilizes the temperature difference between warm surface waters and cold deep ocean waters to generate electricity. Using the Rankine cycle, warm water is used to evaporate a working fluid like ammonia in a heat exchanger, the vapor then drives a turbine which powers a generator before being condensed back into a liquid using cold deep water. While OTEC provides clean energy and fresh water, the large infrastructure needs and costs have limited its commercial development to date.
Tidal energy
Tidal energy can be harnessed by constructing dams or barrages between tidal basins and the sea. During high tide, seawater fills the basin through sluice gates and turbines. During low tide, the water flows back to the sea through the turbines, turning them to generate electricity. There are different types of tidal power plants based on the number of basins and generation cycles. Single basin one-way plants generate power during ebb tides only, while double basin plants alternate generation between two basins to provide continuous power. Tidal energy is a renewable source but has high capital costs and generation varies with tidal patterns.
Tidal energy
Tidal energy harnesses the kinetic energy of tides to generate electricity. Tides are caused by the gravitational forces of the moon and sun. There are two main methods to capture tidal energy - tidal barrages use dams and turbines to capture potential energy differences between high and low tides, while tidal stream generators use underwater turbines similar to wind turbines to capture the kinetic energy of moving water currents. India has an estimated potential of 8000 MW of power from tidal sources concentrated in the Gulf of Cambay and Gulf of Kutch. While tidal energy has advantages of being predictable, renewable and improving technologies are lowering costs, challenges include high initial costs and potential environmental impacts which require further study.
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The document discusses various forms of ocean energy including tidal power, wave power, ocean thermal energy, and ocean current power. It notes that the ocean has tremendous potential as an energy source, with the ability to generate between 20,000-80,000 terawatt-hours annually from ocean movements, temperatures differences, and salinity gradients. Specific technologies are described for harvesting energy from tidal movements, waves, and thermal differences between warm surface and cold deep waters. Both advantages and disadvantages of ocean energy technologies are provided.
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Tidal power utilizes the kinetic and potential energy of tides to generate electricity through tidal barrages and tidal lagoons. Tidal barrages are dams built across estuaries to capture the energy of tides, while tidal lagoons enclose an area of sea with an embankment to harness tidal flows. The Severn Estuary in the UK has potential for a large tidal barrage with an estimated capacity of 8,640 MW. Tidal lagoons have lower environmental impacts than barrages and the proposed Swansea Bay tidal lagoon in Wales was found to be economically viable at a cost of 3.4p per kWh of electricity generated. However, tidal power projects face political barriers
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0cean and thermal energy for electrical power generation.ppt
Ocean thermal energy conversion (OTEC) utilizes the temperature difference between warm surface ocean waters and cooler deep ocean waters to operate a heat engine and generate electricity. The warm surface water is used to evaporate a working fluid like ammonia in a vaporizer, which then drives a turbine that powers a generator before being condensed back into a liquid using cold water from the depths. While OTEC provides renewable energy without pollution, the technology is not yet cost-effective compared to other sources due to large plant sizes and costs, as well as technical challenges associated with the corrosive, saline ocean environment.
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Tidal energy harnesses the kinetic energy of tides to generate electricity. Tides are caused by the gravitational forces of the moon and sun. There are two main methods to capture tidal energy - tidal barrages use dams and turbines to capture potential energy differences between high and low tides, while tidal stream generators use underwater turbines similar to wind turbines to capture the kinetic energy of moving water currents. India has an estimated potential of 8000 MW of power from tidal sources concentrated in the Gulf of Cambay and Gulf of Kutch. While tidal energy has advantages of being predictable, renewable and improving technologies are lowering costs, challenges include high initial costs and potential environmental impacts which require further study.
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https://www.slideshare.net/SandipKumarSahoo/thesis-on-hydro-power-plant
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Tidal Energy (Power) is that one transported by the tides currents in the ocean in form of mechanical energy.
The objective of this presentation is to show the basic concepts and the different ways it can be converted from sea energy to electric energy.
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Similar to Non conventional energy sources
OCEAN THERMAL ENERGY CONVERSION
OTEC, or Ocean Thermal Energy Conversion, is a technology that generates electricity by exploiting the temperature differences between warm surface waters and colder deep waters in tropical oceans. There are three main types of OTEC systems - floating, land-based, and self-mounted. OTEC plants use the ocean's thermal gradient to evaporate a working fluid like ammonia in a heat exchanger, which then drives a turbine that generates electricity. While OTEC is not yet economically viable at scale, it has advantages of being renewable, low maintenance, and producing fresh water and minerals as byproducts while emitting very little carbon. Further development is needed to minimize environmental impacts and reduce costs to compete with other power sources.
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OCEAN THERMAL ENERGY CONVERSION
Ocean Thermal Energy Conversion (OTEC) is a marine renewable energy technology that converts solar radiation to electrical power by the temperature difference between the deep cold ocean water and warm tropical surface water.
Ocean Thermal Energy Conversion
Ocean Thermal Energy Conversion (OTEC) utilizes the temperature difference between warm surface seawater and cold deep seawater to produce electricity via a Rankine cycle. It can also desalinate water and support mariculture. OTEC uses the sun's heating of the ocean's top layers and input of cold water from polar regions to create a heat source and sink. While offering clean energy, OTEC is limited to tropical ocean sites and has high capital costs, with no systems yet demonstrated at full scale long-term.
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Ocean thermal energy conversion (OTEC) uses the temperature difference between warm surface waters and cold deep ocean waters to drive a power-producing cycle. In OTEC, warm surface water vaporizes a working fluid like ammonia that spins a turbine to generate electricity. The vapor is then cooled and condensed back into a liquid using cold deep seawater, allowing the fluid to be reused continuously. OTEC systems can also produce fresh water and support aquaculture. While experimental OTEC plants achieved limited success in the past, scientists are developing improved designs for closed-cycle and hybrid systems that could enable commercial OTEC plants producing 100 MW of electricity in the future.
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Thermal and tidal energy are renewable energy sources. Thermal energy comes from heat generated by particle motion, and is transferred through conduction, convection and radiation. Thermal power plants convert heat from fuels like coal into electricity. Tidal energy uses turbines or barrages to capture kinetic energy from tidal currents and potential energy from tidal height differences to generate electricity. Tidal energy has high efficiency but construction costs, while thermal plants are cheaper to build but produce pollution. Both sources have localized generation and environmental impacts to consider.
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Non conventional energy sources
- 1. Non-Conventional Energy Sources Ocean Thermal Energy Conversion (OTECH)
- 2. CONTENTS • Introduction . • Working principle. • Method of generation. • Power station in world. • Problems of OTECH.
- 3. Introduction • OTECH – concept – French Physicist Jacques d’Arsonaval. • Indirect form of solar energy at sea • Surface of water – collector – solar - upper layer – sea - infinite heat storage. • Upper layer - heat, Deeper – cold. • Warm surface water – use to heat – low boiling organic fluids – then vapours use run heat engine.
- 4. Working principle • 2nd Law of Thermodynamic pre includes the complete conversion of thermal energy into electricity. • OTECH uses – temp diff between – cooler deep &warmer shallow – to run heat engine – produce usefull work. • OTECH – base load - Electricity Generation.
- 5. Contt… Fig; 1 OTECH Process
- 6. Method of generation • Method of harnessing – open cycle, closed cycle • Open cycle or Claude cycle • Closed cycle or Rankine cycle. Fig;1 OTECH Process
- 7. Rankine OTECH cycle Fig; 2 Closed cycle or Rankine cycle
- 8. Rankine OTECH cycle • Working fluid – Ammonia or Propane • Working fluid – vaporous in evaporator by absorbing heat – warm ocean surface. • High pressure vapour – exit at the evaporator – enters – Turbine – connected to Genarator. • Expansion of vapour – in turbine generators – Electric power.
- 9. Contt… • At Turbine outlet – low pressure exhaust is condensed to liquid by passing - condenser • Cold and deep ocean water – use in condenser to cool the working fluid. • Then working fluid in liquid form is pumped back into the evaporator.
- 10. OTECH Power Station in world • IN 1930 – Georges Claude constructed plant at Mantanzas Bay, Cuba. It is desined for 40 KW but it produced 20 KW. • In India 1MW OTECH plant established on eastren side of Lakshadeep Island. • Largest OTECH plant IN JAPAN – 16MW.
- 11. Problem associated with OTECH • Losses are more, as OTECH requires power for pumping up cold water. • Extraction of energy is difficult and less efficient. • Costlier electric power than any other resources