Steam Engine Specifications/Work Diagrams: Difference between revisions
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=Design 5= | =Design 5= | ||
==50 PSI Boiler Pressure== | |||
Cutoff: 1/4<br> | Cutoff: 1/4<br> | ||
Bore: 4"<br> | Bore: 4"<br> | ||
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Doing such diagrams is quite informative. Note that the expansion curve falls off below atmospheric pressure near the end of the stroke. Naturally, pressure in the cylinder cannot fall below atmospheric pressure, but it could fall to meet it. This is actually not desired. Some amount of back pressure in the cylinder softens the ends of the stroke cycle. This diagram also indicates how long the bump valve pins need to be in order to reach cutoff at 1/4 of the stroke length. Varying this will impact the amount of work produced in one cycle. | Doing such diagrams is quite informative. Note that the expansion curve falls off below atmospheric pressure near the end of the stroke. Naturally, pressure in the cylinder cannot fall below atmospheric pressure, but it could fall to meet it. This is actually not desired. Some amount of back pressure in the cylinder softens the ends of the stroke cycle. This diagram also indicates how long the bump valve pins need to be in order to reach cutoff at 1/4 of the stroke length. Varying this will impact the amount of work produced in one cycle. | ||
==100 PSI Boiler Pressure== | |||
Cutoff: 1/4<br> | |||
Bore: 4"<br> | |||
Stroke: 4"<br> | |||
Boiler Pressure: 100psi<br> | |||
[[Image:Work-Diagram-D5-2.png]] | |||
A more complete work diagram with an operating boiling pressure of 100 psi. | |||
[[Category:Steam Engine]] | [[Category:Steam Engine]] | ||
Revision as of 05:35, 17 May 2011
Main > Energy > Steam Engine
Design 5
50 PSI Boiler Pressure
Cutoff: 1/4
Bore: 4"
Stroke: 4"
Boiler Pressure: 50psi
Doing such diagrams is quite informative. Note that the expansion curve falls off below atmospheric pressure near the end of the stroke. Naturally, pressure in the cylinder cannot fall below atmospheric pressure, but it could fall to meet it. This is actually not desired. Some amount of back pressure in the cylinder softens the ends of the stroke cycle. This diagram also indicates how long the bump valve pins need to be in order to reach cutoff at 1/4 of the stroke length. Varying this will impact the amount of work produced in one cycle.
100 PSI Boiler Pressure
Cutoff: 1/4
Bore: 4"
Stroke: 4"
Boiler Pressure: 100psi
A more complete work diagram with an operating boiling pressure of 100 psi.