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6c6c817a68
Significantly updates the Engineering guidebook (more explicitly the Atmos section) to have a lot more relevant and useful information. Right now engineering has been getting update after update with no real change to the relevant guidebook entry. This has lead to a lot of out of date information and bad practices being prevalent in the guidebook, something that pains me to read. (cherry picked from commit 98c606d76007865e93ebd438d0cf9219d14a4631)
44 lines
2.7 KiB
XML
44 lines
2.7 KiB
XML
<Document>
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# Pneumatic Valve
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The pneumatic valve is a bidirectional valve controlled via a pressure input.
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<Box>
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<GuideEntityEmbed Entity="PressureControlledValve"/>
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</Box>
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The pneumatic valve has 3 connections: input, output, and control.
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The "input" side will be the input/output connection with the highest pressure, and can switch sides, making the valve bidirectional.
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<Box>
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<GuideEntityEmbed Entity="GasPipeStraight" Caption="Input/Output"/>
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</Box>
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<Box>
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<GuideEntityEmbed Entity="GasPipeStraight" Caption="Control" Rotation="90"/>
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<GuideEntityEmbed Entity="PressureControlledValve" Caption=""/>
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<GuideEntityEmbed Entity="FloorTileItemSteel" Caption=""/>
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</Box>
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<Box>
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<GuideEntityEmbed Entity="GasPipeStraight" Caption="Input/Output"/>
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</Box>
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The valve will [color=green]open[/color] when the pressure on the output side is lower than the pressure on the control side by [color=orange][protodata="PressureControlledValve" comp="PressureControlledValve" member="Threshold"/] kPa[/color].
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The valve will [color=red]close[/color] when the pressure of the output side reaches the pressure of the control side within [color=orange][protodata="PressureControlledValve" comp="PressureControlledValve" member="Threshold"/] kPa[/color].
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For example, a pneumatic valve with a control pressure of 500 kPa will open when the output pressure is 500 kPa - [color=orange][protodata="PressureControlledValve" comp="PressureControlledValve" member="Threshold"/] kPa[/color] or lower, and it will close when the output pressure is 500 kPa - [color=orange][protodata="PressureControlledValve" comp="PressureControlledValve" member="Threshold"/] kPa[/color] or higher.
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The valve's control pressure is determined by a pipenet connection, and as such can be adjusted on the fly by a [textlink="pump" link="Pumps"] or another source of pressure control.
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## Differences to Pumps
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The pneumatic valve is different from a [textlink="pump" link="Pumps"] which moves gas via work.
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The pneumatic valve is a passive device that moves gas based on the higher pressure of the input gas, and as such it can sometimes fill volumes faster than a [textlink="pump" link="Pumps"] can.
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For example, a pneumatic valve with a control pressure of 500 kPa will fill a volume faster than a pressure [textlink="pump" link="Pumps"] set to 500 kPa.
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However, the [textlink="pump" link="Pumps"] will be able to maintain the pressure in the volume more accurately.
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The pneumatic valve can be used in a variety of applications, for example:
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- To automatically vent gasses in a burn chamber based on control input
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- The filling of a volume quickly, based on a customizable control pressure
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</Document>
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