What are the advantages and disadvantages of ocean energy?

Answer 1

 hi this is hard

Answer 2

 ocenan energy is the energy beneat us and the evidence

 

 

this is difnetion form dickonary

Answer 3

these are the advantages of ocean energy:
1.They are inexhaustible fuel source
2. They are minimal environmental impact

these are the disadvantages of ocean energy
1. They nothing in us.
2. They are very diffuse source means low energy production.


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Answer 4

The advantages for using tidal and wave energy over different fossil fuels are plentiful, below there are several impressive benefits of using tidal and wave energy, including the factor of replacing a percentage of fossil fuel use.

    * It reduces the dependence upon fossil fuels
    * Tidal and wave energy is free, renewable, and clean source of energy
    * It produces clean electricity, with no production of greenhouse gas or pollution.
    * Tidal and wave energy generation and consumption creates no liquid or solid pollution
    * Highly efficient resource (compared with coal and oil at 30%, tidal power efficiency is about 80%)
    * Energy capturing and conversion mechanism may help protect the shoreline
    * Energy capturing and conversion mechanism has little visual impact
    * About 60 billion watts of energy from tides can be used for electricity generation
    * Tides are active 24 hours a day, 365 days a year
    * Tidal power is a renewable source of energy.
    * It produces energy for free, once the initial costs are recovered.
Disadvantages

    * It is not cost effective because fossil-fuel power stations do not pay for the cost of their carbon emissions to the planet. This will change as fossil fuel is valued at its real price.
    * It leads to the displacement of wild life habitats.
    * It can only be used where there is suitable tidal flow or wave motion. So it can not be used inland.
    * It only produces electricity during tidal surges.
    * Barrage systems require salt resistant parts and lots of maintenance.
    * The frames of the turbines can disrupt the movement of large marine animals and ships through the channels on which the barrage is built.
    * today, power produced from tidal fences is still a bit expensive than that using conventional plants using coal and natural gas (but it can be cheaper if improved technologies and large-scale generation is applied).
    * the barrage systems have the disadvantages of disrupting fish migration and killing fish passing through the turbines, therefore, there is also the risk of destruction of ecosystem that rely on the coming and going of tides.
    * the ecosystem is disrupted during the construction of building the tidal fence. this affects the fishes and also the fishermen who depends their life on it.
    * Fossil fuels can be moved to just about anyplace to create energy on the spot. This is what allows a car to work while moving.
    * Tidal energy can only be created on a coast with a good tidal differential. Worthless for a landlocked country, has to be converted to something else to be transported
    * It is limited because the tide never speeds up or slows down, and occurs on 6 hour cycles. and also, it is dependent on the fetch distance. the fetch is the distance the tide rises and falls, so some beaches have a very small fetch, and others have a big fetch but hardly any have a large enough fetch to support tidal energy
    * The main detriment is the cost of those plants, for constructing and running this facility with an annual output of 3423 GWh, is a cost about 1.2 billions, but this doesn't include operational and maintenance cost (coal and oil are cheaper).
    * Construction of strong, cheap and efficient conversion devices may be problematic
    * Technology isn't fully developed
    * Problems exist with the transportation of hydroelectricity
    * Ecological impacts relating to the alteration of tides and waves is not fully understood
    * Appropriate waves and tides are highly location dependent
    * Waves are a diffuse energy source, irregular in direction, durability and size
    * Extreme weather can produce waves of great intensity