Pen stock is made of pipe while Tunnel is not a pipe.Tunnel is made of concrete material.
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no difference
There is no thermodynamic difference between them .
Pressure Shaft is designed to resist Internal as well as External Pressure, but the Penstock is designed to resist Internal Pressure only. - Saravanan.S
A tunnel between De-silting basin or Fore-bay to Surge Shaft is called Head Race tunnel which may have pressure flow or gravity flow.
Head race tunnel are Non pressurized tunnels and Penstock is the tunnel bearing pressure. As there is the breakdown in the Power and the water is stopped entering through the turbines, the pressurized flow of water in the penstock creates hammer effect and goes back to the HRT. So, keeping Fore bay in between HRT and Penstock helps reducing pressurized water to create Water Hammers. Hence, to reduce the back water pressure effect, the Fore bay is used in the Hydro power Plant.
Hydroelectricity is electricity generated by hydropower. This is the production of power through the use of gravity or flow to spins water turbine and generator. The amount of electricity produced depends on many things. Some of the things that it depends on are the volume, the amount of pressure, and the difference in height between the reservoir, or source of water, and where it flows out. Hydroelectricity is electricity generated by hydropower. This is the production of power through the use of gravity or flow to spins water turbine and generator. The amount of electricity produced depends on many things. Some of the things that it depends on are the volume, the amount of pressure, and the difference in height between the reservoir, or source of water, and where it flows out.
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The difference between a shogun and a samurai is like the difference between a king and a knight.
just difference