09-04-2012, 03:26 PM
Hydroelectric Power Plant
hydro.ppt (Size: 230 KB / Downloads: 152)
PRELIMINARY INVESTIGATION
The purposes of preliminary investigations are to provide sufficient information to find out the practicability of the proposed scheme and to choose between alternative schemes.
The preliminary designs and estimations can be prepared and recommendations are made with reasonable confidence
FINAL INVESTIGATIONS
The final investigation include the detailed exploration of the recommended site so as to establish the complete suitability and to enable the final designs.
The preliminary and final investigations include mainly
(a) hydrological (b) topographical and © geological
SPILLWAYA
spillway as the name suggests could be called as a way for spilling of water from dams. It is used to provide for the release of flood water from a dam.
It is used to prevent over toping of the dams which could result in damage or failure of dams
SURGE TANK
Surge tanks are tanks connected to the water conductor system. It serves the purpose of reducing water hammering in pipes which can cause damage to pipes.
The sudden surges of water in penstock is taken by the surge tank, and when the water requirements increase, it supplies the collected water thereby regulating water flow and pressure inside the penstock.
ADVANTAGES
Elimination of the cost of fuel.
Longer economic lives than fuel-fired generation
Operating labor cost is also usually low
No green house gas (CO 2 ) emission during power generation
DISADVANTAGES
This projects can be disruptive to surrounding aquatic ecosystems both upstream and downstream of the plant site
It needs to relocate the people living where the reservoirs are planned
hydro.ppt (Size: 230 KB / Downloads: 152)
PRELIMINARY INVESTIGATION
The purposes of preliminary investigations are to provide sufficient information to find out the practicability of the proposed scheme and to choose between alternative schemes.
The preliminary designs and estimations can be prepared and recommendations are made with reasonable confidence
FINAL INVESTIGATIONS
The final investigation include the detailed exploration of the recommended site so as to establish the complete suitability and to enable the final designs.
The preliminary and final investigations include mainly
(a) hydrological (b) topographical and © geological
SPILLWAYA
spillway as the name suggests could be called as a way for spilling of water from dams. It is used to provide for the release of flood water from a dam.
It is used to prevent over toping of the dams which could result in damage or failure of dams
SURGE TANK
Surge tanks are tanks connected to the water conductor system. It serves the purpose of reducing water hammering in pipes which can cause damage to pipes.
The sudden surges of water in penstock is taken by the surge tank, and when the water requirements increase, it supplies the collected water thereby regulating water flow and pressure inside the penstock.
ADVANTAGES
Elimination of the cost of fuel.
Longer economic lives than fuel-fired generation
Operating labor cost is also usually low
No green house gas (CO 2 ) emission during power generation
DISADVANTAGES
This projects can be disruptive to surrounding aquatic ecosystems both upstream and downstream of the plant site
It needs to relocate the people living where the reservoirs are planned