Alternative sources of energy



Why is there a need for alternative sources of energy?


The graph that you completed last time shows just how much we rely on fossil fuels

90 per cent of the worlds energy supply’s come from fossil fuels

Fossil fuels are convenient and relatively cheap – a litre of petrol in 1998 would have been 20p if there was no tax added!

How much longer can we depend on fossil fuels?

Because they are fossil fuels ....etc

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ABSTRACT:
Depleting fossil fuel reserves and increasing vehicular emission have forced the attention of various petroleum industries to find and alternate fuel that will power the vehicle in future based on the present day internal design as the deposits of crude oil is expected to last for another 50 years at the minimum utilization level .the proposed fuel should suitably replace the existing fuel and at the same time it should be renewable Hydrogen is one such fuel that has been proposed for the purpose ....etc

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In the history of internal combustion engine development, hydrogen has been considered at several phases as a substitute to hydrocarbon-based fuels. Starting from
the 70’s, there have been several attempts to convert engines for hydrogen operation.
Together with the development in gas injector technology, it has become possible to
control precisely the injection of hydrogen for safe operation. Since the fuel cell needs
certain improvements before it is widely used in vehicles, the conventional internal combustion engine is to play an i ....etc

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SYNOPSIS
Using an experimental system that mimics stone fragmentation in the renal pelvis, the role of stress waves and cavitation in stone comminution in shock-wave lithotripsy (SWL) is noted. Spherical plaster-of-Paris stone phantoms (10mm Dia) were exposed to 25, 50, 100, 300 and 500 shocks at the beam focus of a Dornier HM-3 lithotripter. The stone phantoms were immersed either in degassed water or in castor oil to delineate the contribution of stress waves and cavitation to stone comminution. It ....etc

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1. Introduction
Though any death-knell for the internal combustion engine is decades off, as fossil fuels may last upto 2050 only, we have to consider an alternative for present fuels. The world’s automakers seem to believe that the low emission, high efficiency fuel cell will eventually prove as an alternative, delivering the power and performance that customers expect. Such a high potential candidate needs suitable analysis. This paper is a modest attempt in giving the promising alternative: fuel cell vehicle. Also ....etc

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There are several growing needs for hydrogen: in the near-term for the upgrading of heavy petroleum, as a chemical feedstock, and for the production of fertilizer; in the mid-term for the production of synthetic fuels for transportation; and in the long-term as a transportation fuel through the use of fuel cells.



High-temperature electrolytic water-splitting supported by nuclear process heat and electricity has the potential to produce hydrogen with an overall system efficiency of 45 to 50 %, while avoiding the challenging corrosive con ....etc

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Presented by:
Birendra kr. Pandey


Alternative Energy: A Closer look at Hybrid Energy Systems using wind and solar sources.
Introduction
 The demand for alternative energy sources is increasing each year due to need for clean and renewable sources of energy.
 Hybrid energy systems are ideal for outdoor and/or remote area applications.
 Overview: Wind/Solar Hybrid Systems
Background (cont.)
 A hybrid energy system is a system that consist of two or more alternative energy sourc ....etc

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Hydrogen as an Alternative Fuel
Abstract:
Our main future concern is to reduce the carbon emission in the atmosphere. The use of fossil fuels such as coal, petrol, diesel etc., may increase the carbon emission which in turn affect the ozone layer and cause depletion this ozone layer depletion in turns causes global warming which increase the average temperature of the earth.
Nowadays the fossil fuels are steeply depleting and our major concern is how to meet the increasing demand for energy in future. Hence t ....etc

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In the future, predominantly solar or wind power systems will likely require energy storage for days to approximately a week, with or without connections to the 2 electric grid. If so, conversion of electricity to chemical energy is potentially attractive, since chemicals are inexpensive to store and turnaround efficiency is less critical for storage periods of a week or more. The most attractive chemical for this process is likely to be hydrogen (H2) generated locally by electrolysis of water using intermittent excess solar or wind power. Late ....etc

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i want the ppt presentation on hydrogen as a alternative fuel . please send it to me my email id : [email protected]
....etc

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