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Accepted Papers - 3.pdf - UNESCO

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Himalayan region is the source of a number of rivers<br />

which are the major of sweet and potable water used<br />

for drinking, domestic, industrial, transportation and<br />

agricultural applications. But due to the expansion<br />

of industries, uncontrolled population, huge infractural<br />

development and exponentially increasing<br />

demand energy and resource parameters for<br />

sustainable living, entire world is suffering from<br />

water crisis.<br />

On the other hand energy is also an essential<br />

requirement for human survival and growth.<br />

Electricity is the most utilizable form of energy and<br />

widely used for domestic and industrial applications.<br />

Water is not only used in domestic and agricultural<br />

sectors but more of available fraction is used by<br />

industrial sector. Due to the unutilisability of salty<br />

water in domestic/agriculture and industrial (due to<br />

the corrosion problem by salts gradients in water)<br />

sectors; the demand of potable of pure water is<br />

rapidly increasing. In industries a large amount of<br />

water is required for the applications based on<br />

evaporative cooling in power plants, thermal<br />

industries and buildings, boiler feed water, process<br />

water, irrigation of surrounds of industries etc.<br />

In the power sector of the country more than<br />

70 % of the electricity is generated through steam<br />

power plants where coal is used as the primary fuel<br />

and water is used as the evaporative medium for<br />

heat transfer. Similarly in nuclear and gas based<br />

power plants; water is needed. Electricity generation<br />

from hydro power plants is in the second position<br />

in the country and is accepted to increase gradually.<br />

Water is also an essential requirement of refineries<br />

and manufacturing industries. The remaining<br />

processed water of the power plants, industries and<br />

other sectors creates serious water and hence<br />

environmental problem. Some developed countries<br />

of the world already shifted towards refining of the<br />

waste water to fulfill the water demand; but refining<br />

technologies are quite expansive especially the<br />

developing countries like India; where around 40%<br />

population is still below the poverty line. Only the<br />

proper planning and implacable policies can provide<br />

the solution of water conservation and utilization<br />

of waste water for other application. Solar pond can<br />

be an effective technology towards the electricity<br />

generation, water & energy conservation and hence<br />

the protection of environment.<br />

372<br />

2. International Energy Outlook: World Energy<br />

Scenario<br />

According to the International Energy Outlook<br />

2005 (IEO2005) world primary energy consumption<br />

is projected to increase by 57% from 2002 to 2025.<br />

In its reference case, world marketed energy<br />

consumption is projected to increase on average by<br />

2.0 percent per year over the 23-year forecast<br />

horizon from 2002 to 2025-slightly lower than the<br />

2.2 percent average annual growth rate from 1970<br />

to 2002. Worldwide, total energy use in projected<br />

to grow from 412 quadrillion British Thermal units<br />

(Btu) in 2002 to 553 quadrillion Btu in 2015 and<br />

645 quadrillion Btu in 2025.<br />

2.1 World Primary Energy Resources<br />

Use of all energy sources increases over the<br />

forecast period. Fossil fuels (oil, natural gas and<br />

coal) continue to supply much of the energy used<br />

worldwide, and oil remains the dominant energy<br />

source, given its importance in the transportation<br />

and industrial end-use sectors. World OIL use is<br />

expected to grow from 78 million barrels/day in<br />

2002 to 103 million barrels/day in 2015 and 119<br />

million barrels/day in 2025. The projected increment<br />

in worldwide oil use would require an increment in<br />

world oil production capacity of 42 million barrels/<br />

day over 2002 levels.<br />

Natural GAS is projected to be the fastest<br />

growing component of world primary energy<br />

consumption in IEO2005. Consumption of natural<br />

gas worldwide increases in the forecast by an<br />

average of 2.3 % annually from 2002 to 2025,<br />

compared with projected annual growth rates of 1.9<br />

% for oil consumption and 2.0 % for coal<br />

consumption. From 2002 to 2025, consumption of<br />

natural gas is projected to increase by 69 %, from<br />

92 trillion cubic feet (Tcf) to 156 Tcf, and its share<br />

of total energy consumption is projected to grow<br />

from 23 %to 25%. The electric power sector<br />

accounts for 51 % of the total incremental growth<br />

in worldwide natural gas demand over the forecast<br />

period.<br />

World COAL consumption is projected to<br />

increase from 5,262 million short tons (Mst) in 2002<br />

to 7,245 Mst in 2015, at an average rate of 2.5<br />

percent per year. From 2015 to 2025, the projected<br />

rate of increase in world coal consumption slows to

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