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Active Vent

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Kit (Active Vent)
ItemActiveVent.png
Stacks

ItemActiveVent.png

5
Paintable Yes
Recipe
Created With Hydraulic Pipe Bender
Cost

ItemIronIngot.png

5


ItemCopperIngot.png

5


ItemGoldIngot.png

1


Energy.png

500
Hash ID -842048328
Active Vent
StructureActiveVent.png
Paintable Yes
Operation
Power Usage

Energy.png

100
(100 W)
Construction
Placed with Kit (Active Vent)
Placed on Small Grid
Stage 1
Deconstruction
Deconstructed with Hand Drill
Item received Kit (Active Vent)

Description[edit]

The Active Vent moves gas between the connected Pipe Network and the atmosphere surrounding the active vent. It requires electric power to work (100 Watt).

The "PressureExternal" value is a measure of the atmosphere surrounding the active vent. The "PressureInternal" value is a measure of the pressure inside the active vent pipe network.

Its functionality depends on the selected mode but when used manually both modes only use the "PressureExternal":

  • In "Outward mode" (switch in blue), the active vent increases the external pressure by moving gas from the pipe network to the surrounding atmosphere, up to "PressureExternal", by default equal to 101 kPa
  • In "Inward mode" (switch in red), the active vent decreases the external pressure by moving gas from the surrounding atmosphere to the pipe network, down to "PressureExternal", by default equal to 0 kPa

The "PressureExternal" value is set to 100 kPa when the Circuitboard (Airlock Control) is used in a Console. This is the reason why the airlock is unable to pressurise when the atmosphere surrounding the active vent is unable to reach 100 kPa within the airlock.

The "PressureExternal" values can also be inconvenient on worlds like Loulan whose atmosphere is well above 101kPa. Manually-operated airlocks can not equalise the pressure within the airlock during the exit cycle to the Loulan atmosphere pressures. Without equal pressures you can not prevent wind currents from occurring when opening airlock doors. The active vent has no effect when the external pressure within the airlock surrounding the active vent is already >101kPa. When the pressure is <101kPa the vent will stop when it reaches 101kPa.

The "PressureExternal" and "PressureInternal" values can be modified using logic chips or programmatically via IC10 scripts.

Note: These values reset to default values on mode change. Values can be set through logic chips, if the value is modified after a mode change.

Note: Switching logic chips off then on will not modify values on the active vent, the values supplied to the chips must be altered for the values to be written.


To calculate the moles per tick, use the following equation:

n = (P * V) / (R * T)

Where (Inward vent):

  • P = Min(Room pressure, 10.1325 kPa)
  • V = 8000 litres
  • n = Moles per tick
  • R = Gas constant (8.3144)
  • T = Room temperature

Where (Outward vent):

  • P = Min(Pipe pressure, 10.1325 kPa)
  • V = Pipe volume in litres
  • n = Moles per tick
  • R = Gas constant (8.3144)
  • T = Pipe temperature

(These do not take into account the constraints imposed by "PressureExternal" and "PressureInternal")

Note: In order to get the proper units out of this calculation you need to use either kilopascal (kPa) and litre (l), or Pascal (Pa) and cubic meters (m3).

Note: The insert slot currently takes any item and seems to have no effect.

Data Network Properties[edit]

These are all Data Network properties of this device.

Mode Values[edit]

These lists the values and meanings for the "Mode" property of the Active Vent.

Value Meaning
0 "Outward" mode (Moves gas from the connected pipe network to the surrounding atmosphere.)
1 "Inward" mode (Moves gas from the surrounding atmosphere to the connected pipe network.)

Data Parameters[edit]

These are all parameters, that can be written to with a Logic Writer, Batch Writer, or Integrated Circuit (IC10). The outputs are listed in the order a Logic Writer's "VAR" setting cycles through them.

Parameter Name Data Type Description
Open Boolean Does not function.
Mode Integer Set the Active Vent mode. (See Mode Values)
PressureExternal Float "Outward" mode: Maximum pressure of the surrounding atmosphere. The default value is 101.325 (kPa).
"Inward" mode: Minimum pressure of the surrounding atmosphere. The default value is 0 (kPa).
PressureInternal Float "Outward" mode: Minimum pipe network pressure. The default value is 0 (kPa).
"Inward" mode: Maximum pipe network pressure. The default value is 50662.5 (kPa).
Lock Boolean Lock the Active Vent when set to 1. Manual operation is not possible while locked.
Setting Float Does not function.
On Boolean Turn on the Active Vent when set to 1.

Note: The value of "PressureExternal" and "PressureInternal" will be reset to the default when changing modes.

Note: If turned on, the vent will still consume energy when the target pressure is reached.

Data Outputs[edit]

These are all parameters, that can be read with a Logic Reader or a Slot Reader. The outputs are listed in the order a Logic Reader's "VAR" setting cycles through them.

Output Name Data Type Description
Power Boolean Returns whether the Active Vent is receiving power and is turned on. (0 for no, 1 for yes)
Open Boolean Returns whether the Active Vent is open. (0 for no, 1 for yes) (Untested)
Mode Integer Returns the current mode of the Active Vent. (See Mode Values)
Error Boolean Returns whether the Active Vent is currently flashing an error. (0 for no, 1 for yes)
PressureExternal Float Returns the desired external pressure of the Active Vent.
PressureInternal Float Returns the desired internal pressure of the Active vent. (Untested)
Lock Boolean Returns whether the Active Vent is locked. (0 for no, 1 for yes)
Setting Float Returns a range from 0.0 to 100.0. (Assumption) Returns the percentage amount of pumping throughput of the Active Vent.
Maximum Integer Returns 100. (Assumption) Returns the maximum throughput percentage of the Active Vent.
Ratio Float Returns a range from 0.0 to 1.0. (Assumption) Returns the percentage amount of pumping throughput of the Active Vent.
On Boolean Returns whether the Active Vent is set to on. (0 for no, 1 for yes)
RequiredPower Integer Returns the current amount of power needed for the Active Vent.