8,877
edits
Difference between revisions of "NVGate 2022: Release note"
Jump to navigation
Jump to search
NVGate 2022: Release note (view source)
Revision as of 10:18, 14 January 2022
, 10:18, 14 January 2022→70px Add on : PV (pressure volume) diagram
| Line 247: | Line 247: | ||
A pressure–volume diagram (or PV diagram, or volume–pressure loop is used to describe corresponding changes in volume and pressure in a system. | A pressure–volume diagram (or PV diagram, or volume–pressure loop is used to describe corresponding changes in volume and pressure in a system. | ||
[[File:Indicator_diagram_steam_admission.png|500px]] | |||
The diagram records the pressure of steam versus the volume of steam in a cylinder, throughout a piston's cycle of motion in a steam engine. The diagram enables calculation of the work performed and thus can provide a measure of the power produced by the engine. | The diagram records the pressure of steam versus the volume of steam in a cylinder, throughout a piston's cycle of motion in a steam engine. The diagram enables calculation of the work performed and thus can provide a measure of the power produced by the engine. | ||
| Line 252: | Line 255: | ||
To exactly calculate the work done by the system it is necessary to calculate the integral of the pressure with respect to volume. One can often quickly calculate this using the PV diagram as it is simply the area enclosed by the cycle. | To exactly calculate the work done by the system it is necessary to calculate the integral of the pressure with respect to volume. One can often quickly calculate this using the PV diagram as it is simply the area enclosed by the cycle. | ||