Penstocks: Difference between revisions
Rmanwaring (talk | contribs) (Created page with "__NOTOC__ ---- <!-- Delete any sections that are not necessary to your topic. Add pictures/sections as needed --> Penstocks are used in projects that produce electricity using hydroelectric power plants integrated into the design of the dam. “The penstock conveys water from the intake structure to the powerhouse and can take many configurations, depending upon the project layout. Where the powerhouse is an integral part of the dam, the penstock is simply a passage th...") |
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“The penstock conveys water from the intake structure to the powerhouse and can take many configurations, depending upon the project layout. Where the powerhouse is an integral part of the dam, the penstock is simply a passage through the upstream portion of the dam. A canal, pipe, or tunnel is required where the powerhouse is separated from the intake. A penstock may be several miles long at diversion-type projects. Water may be conveyed most of the distance at an elevation close to the forebay elevation via an open canal or a low pressure pipe or tunnel. The remainder of the penstock, where most of the drop in elevation occurs, would be a pressurized tunnel or pipe. Because the cost of a pressurized tunnel or pipe is much greater than that of a low pressure tunnel or pipe, it is usually desirable to minimize the length of the high pressure penstock. When the powerhouse is located adjacent to the dam but is not an integral part of the structure, water would be conveyed through or around the dam via a pressure tunnel. For multi-unit installations, it is often desirable to serve several units with a single penstock, and manifolds or bifurcation structures are provided to direct flow to individual units”.<ref name="EM 1110-2-1701">[[Hydropower (EM 1110-2-1701) | EM 1110-2-1701 Hydropower, USACE, 1985]]</ref> | “The penstock conveys water from the intake structure to the powerhouse and can take many configurations, depending upon the project layout. Where the powerhouse is an integral part of the dam, the penstock is simply a passage through the upstream portion of the dam. A canal, pipe, or tunnel is required where the powerhouse is separated from the intake. A penstock may be several miles long at diversion-type projects. Water may be conveyed most of the distance at an elevation close to the forebay elevation via an open canal or a low pressure pipe or tunnel. The remainder of the penstock, where most of the drop in elevation occurs, would be a pressurized tunnel or pipe. Because the cost of a pressurized tunnel or pipe is much greater than that of a low pressure tunnel or pipe, it is usually desirable to minimize the length of the high pressure penstock. When the powerhouse is located adjacent to the dam but is not an integral part of the structure, water would be conveyed through or around the dam via a pressure tunnel. For multi-unit installations, it is often desirable to serve several units with a single penstock, and manifolds or bifurcation structures are provided to direct flow to individual units”.<ref name="EM 1110-2-1701">[[Hydropower (EM 1110-2-1701) | EM 1110-2-1701 Hydropower, USACE, 1985]]</ref> | ||
==Best Practices Resources== | ==Best Practices Resources== | ||
{{Document Icon}} [[Hydropower | {{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance|Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance (Federal Energy Regulatory Commission)]] | ||
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Revision as of 05:55, 16 September 2022
Penstocks are used in projects that produce electricity using hydroelectric power plants integrated into the design of the dam.
“The penstock conveys water from the intake structure to the powerhouse and can take many configurations, depending upon the project layout. Where the powerhouse is an integral part of the dam, the penstock is simply a passage through the upstream portion of the dam. A canal, pipe, or tunnel is required where the powerhouse is separated from the intake. A penstock may be several miles long at diversion-type projects. Water may be conveyed most of the distance at an elevation close to the forebay elevation via an open canal or a low pressure pipe or tunnel. The remainder of the penstock, where most of the drop in elevation occurs, would be a pressurized tunnel or pipe. Because the cost of a pressurized tunnel or pipe is much greater than that of a low pressure tunnel or pipe, it is usually desirable to minimize the length of the high pressure penstock. When the powerhouse is located adjacent to the dam but is not an integral part of the structure, water would be conveyed through or around the dam via a pressure tunnel. For multi-unit installations, it is often desirable to serve several units with a single penstock, and manifolds or bifurcation structures are provided to direct flow to individual units”.[1]
Best Practices Resources
Citations:
Revision ID: 3392
Revision Date: 09/16/2022