8,877
edits
Line 246: | Line 246: | ||
== [[File:PV.png|70px]] Add on : PV (pressure volume) diagram == | == [[File:PV.png|70px]] Add on : PV (pressure volume) diagram == | ||
A pressure–volume diagram (or PV diagram, or volume–pressure loop | A pressure–volume diagram (or PV diagram, or volume–pressure loop is used to describe corresponding changes in volume and pressure in a system. | ||
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. | |||
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. | |||
[[File:Indicator_diagram_steam_admission.png|600px]] | |||
How to use : | |||
[[File:PVdiagram2022.PNG|600px]] | [[File:PVdiagram2022.PNG|600px]] | ||
*Define one (or more) channel as a pressure. | *Define one (or more) channel as a pressure. | ||
*Add this channel into Sync. order (SOA) plug in. | *Add this channel into Sync. order (SOA) plug in. |