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Electricity generation from renewable and non-renewable sources.

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Introduction

Electricity Generation

VSSB

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Renewable and Non-renewable energy sources &Fuels:

Renewable energy comes from natural sources that are constantly and sustainably replenished. The most common renewable energy sources are biomass, hydroelectric, geothermal, wind power and solar power. Sunlight is the source of most renewable energy power; the sun can be used to produce solar energy which is electricity for heating, cooling, lighting homes and transportation. Non-renewable energy is energy that comes from the ground and is not replaced in a relatively short amount of time. Fossil fuels are the main category of non-renewable energy sources. Fossil fuels include; coal, oil and natural gas. These resources come from animals and plants that have died millions of years ago and then decomposed to create a useable source of energy for humans.

Pros and Cons:

Non-renewable energy Sources and fuels:

Types

        Pros

        Cons

Oil  

Crude oil, is a fossil fuel that is refined into many different energy products (e.g., gasoline, diesel fuel,  heating oil).

Oil forms underground in rock such as shale, which is rich in organic materials.

        1. High net energy yield

2.

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Middle

        1. Large fuel supply

2. Lower Co2 emission

3. Low environmental effect while running without any accidents

Renewable energy sources and fuels:

Types

        Pros

        Cons

        Biomass

Biomass can be burned, gasified, fermented or processed to produce electricity. Biomass contains stored energy from the sun; Plants absorb the sun's energy in a process called photosynthesis. The chemical energy in plants gets passed on to animals and people that eat them.

        1. Moderate costs

2. Easy to convert to a high energy portable fuel such as alcohol or gas

3. Very low in sulphur reducing the production of acid rain

        1. Moderate to high environmental effect

2. Soil erosion, water pollution, and loss of wildlife habitat

3. More expensive than conventional fossil fuel

        Solar

Solar power is energy from the sun and converted into heat and electricity. It can provide power for cars, boats, houses and spacecraft.

        1. Reduces dependency on fossil fuel and coal

2. Renewable, endless supply that belongs to no one

3. Low environmental effect

No Co2 emission

           1. Low efficiency

   2. High costs

   3. Need access to sun most of the time

        Wind Power

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Conclusion

Diagrams

http://www.nrg-consultants.com/cogeneration/combinedheatandpower/microchp/index.html

Pros and Cons

        Pros

        Cons

        Micro-CHP

           1. When the micro CHP unit is generating heat, the unit will also generate electricity to be used in your home.

   1. Can be wall hung or floor standing

   1. It has the potential to reduce the amount of CO2 emission’s produced in your home by around 40%.

           1.  Payback time are still quite high, between 7-15 years depending on use and if the system can export electricity to the national grid.

   1.  A CHP system is still reliant on the use of natural gas. However there are boilers on the market, which utilise a renewable source such as biomass.

   1. Low efficiency

References

   1. http://www.energy-measures.com/chp/advantages_disadvantages_chp.php

   2. http://www.yougen.co.uk/renewable-energy/Combined+Heat+'26+Power/#howdoesitwork

   3. http://www.ukecoenergy.co.uk/combined.php?menu3ID=11

   4. http://www.microchap.info/introduction_to_micro_chp.htm

   5. http://www.yhmp.org/combined_heat_and_power.html

...read more.

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