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Lecture 21 hydro electric power plant
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Lecture 21-Hydroelectric power plantsIIT Roorkee July 2018
What are the advantages of hydroelectric power plants?
Hydroelectric power plants provide pollution-free
renewable energy at no running cost. They are easy to
start and switch on and off, requiring less skill than
thermal power plants. Hydro power plants also have a
longer life expectancy and lower maintenance due to
their robust structure.
What is the difference in RPM between turbines in hydro
power plants and other types of power plants?
The turbines in hydro power plants run at a lower RPM
compared to steam or nuclear power plants, resulting in
less wear and tear and maintenance. This is possible
because the density of water, which is used as the
working fluid in hydro power plants, is much higher than
that of steam.
, What are some disadvantages of hydro power plants?
Some disadvantages of hydro power plants include high
capital costs, dependence on the quality of water for
power generation, site selection challenges, long
erection time, and disruption of the ecology of the area.
How can high utilization and base load sharing be
achieved with hydro power plants?
In some cases, a mix of hydro and thermal power plants
can be used to achieve high utilization and base load
sharing.
What is required for site selection of hydro power
plants?
Site selection for hydro power plants requires
hydrological, topographical, and geological surveys to
ensure adequate water supply and suitable conditions
for dam construction.
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