The limited supply of fossil hydrocarbon resources and the negative impact of CO
ID: 297964 • Letter: T
Question
The limited supply of fossil hydrocarbon resources and the negative impact of CO_2 emissions on the global environment dictate the increasing usage of renewable energy sources. Renewable energy conversion technologies are used to convert this source of energy into a more useful form. Evaluating the technical and economic bases for choosing one renewable technology over another can be a complex process, especially for individuals unacquainted with these technologies. Prepare a paper for submission to the Journal of 'Renewable and Sustainable Energy Reviews' entitled "Hydro-energy: a review of the technology for power generation". Use schematic diagrams generously and compare the salient features of each conversion technology in tabular format for ease of reading. [Max. 1 answer book]Explanation / Answer
hydro energy a review of the technology for power generation
Hydro power is the extraction of energy from falling water from a higher altitude to lower altitude when it passes through an energy conversion device like water turbine .
Water turbine converts the water energy into mechanical energy.This mechanical energy is converted into electrical energy with the help of generator.Turbines usually move to generate mechanical power. This mechanical energy is converted then into electrical power through generators. This electricity is used in many ways and is supplied to the houses and industries.While a certain suited device is inserted into the river, then hydropower can be extracted from river currents.
Droughts and floods changes in local water can affect power output.
Applications : 1)Residential and Industrial electricity can be used by the hydro power
2)Lighting
3)It is used for the low - medium voltage electric needs
4)Supplementing mains supply.
Renewable Energy Technologies
1) Wind energy renewable technology
2)Solar Energy renewable technology
3)Bio energy renewable technology
4)Hydro Energy renewable technology
5)Geo thermal Energy renewable technology
Cost of each renewable technologies :
Cost of renewable energy technology is important as many factors affect cost and different sources of information use different criteria for estimating cost
Average energy generation costs in KWh
1)Wind Energy renewable technology :
Applications : used as Electrical for 1) Water pumping
2)Irrigation pumping
Used as mechanical for 1) Milling grain
2)Remote settlements
3)Supplementing mains supply
2)Solar Energy renewable technology :
performance depends on sun's heat levels
Applications :
1)Navigation aids
2)Commercial system
3)Water heating
4)Cooking
5)Distillation
3) Bio energy renewable technology :
Applications : 1)For cooking purposes
2)Lighting
3)Motive power for small industries
4)Some rural cooking fuel liquid biofuel
4)Geothermal : Applications : Grid electricity
2) Large scale heating.
Geothermal energy is a energy from the earth in the form of heat.Geothermal technologies are geothermal heat pumps , geothermal Electricity production, and geothermal energy can be used directly with small arrangements.
No. strengths weaknesses 1) Technology is simple for production Very site specific technology. Should be close to the rivers or water for generation 2 Life time is about 30 years without major damageDroughts and floods changes in local water can affect power output.
3 Automatic generation with low maintenance High capital investments cost for the equipment 4 No fuel required for the generation of power During dry season the power output decreases or even becomes zero 5 low Environmental impact Can produce water pollution through releasing waste water into the riversRelated Questions
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