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[[Category:Atmospherics]]
 
[[Category:Atmospherics]]
 
{{Itembox
 
{{Itembox
−
| name = Kit (Active Vent)
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| name       = Active Vent
−
| image = [[File:ItemActiveVent.png]]
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| image       = [[File:ItemActiveVent.png]]
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| prefabhash = -842048328
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| createdwith = [[Hydraulic Pipe Bender]], [[Fabricator]]
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| prefabname = ItemActiveVent
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| cost        = 5g [[Iron]], 1g [[Gold]], 5g [[Copper]]
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| stacks = 5
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| stacks      = 5
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| slot_class = SlotClass.None
 
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| sorting_class = SortingClass.Kits
 
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| recipe_machine1 = Hydraulic Pipe Bender
 
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| recipe_cost1 = 5g [[Iron]], 1g [[Gold]], 5g [[Copper]]
 
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| constructs = [[Active Vent]]
 
 
}}
 
}}
 
{{Structurebox
 
{{Structurebox
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| name = Active Vent
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| name             = Active Vent
−
| image = [[File:StructureActiveVent.png]]
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| power_usage      = 100W
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| prefab_hash = -1129453144
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| placed_with_item = [[Active Vent (Item)]]
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| prefab_name = StructureActiveVent
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| placed_on_grid   = Small Grid
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| power_usage = 100W
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| decon_with_tool1 = [[Hand Drill]]
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| placed_on_grid = Small Grid
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| item_rec1        = [[Active Vent (Item)]]
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| decon_with_tool1 = [[Hand Drill]]
 
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| placed_with_item = [[Kit (Active Vent)]]
 
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| item_rec1 = [[Kit (Active Vent)]]
 
 
}}
 
}}
  
 
== Description == <!--T:2-->
 
== Description == <!--T:2-->
 +
Used to move gasses from pipes, by using its inward or outward switches. It needs to be powered to function.
  
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The Active Vent moves gas between the connected [[Pipe Network]] and the atmosphere surrounding the active vent.
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Active vents have a build-in pressure sensor and will use it to try to set the external pressure to the value of the "PressureExternal" parameter.
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It requires electric power to work (100 Watt).
 
  
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The "PressureExternal" value is a measure of the atmosphere surrounding the active vent.
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This parameter is set to its default values everytime the mode switch is used. Default values are 101kPa for Outward and 0kPa for Inward.
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The "PressureInternal" value is a measure of the pressure inside the active vent pipe network.
 
−
 
 
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Contrary to popular belief, both values are enforced, so the Active Vent comes with the functionality of a Pressure Regulator and simultaneously also Back Pressure Regulator. Note that setting these value and changing the Mode afterwards is ill-advised: Changing the Mode always resets both values to their defaults (101/0 for pumping into the room, 0/50 for pumping into the pipe), so they must be set (if at all) *after* setting the Mode.
 
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* In "Outward mode" (switch is blue), the Active Vent increases the external pressure by moving gas from the pipe network to the surrounding atmosphere, up to "PressureExternal", but never allowing the pipe's pressure to drop below "PressureInternal".
 
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* In "Inward mode" (switch is red), the Active Vent decreases the external pressure by moving gas from the surrounding atmosphere to the pipe network, down to "PressureExternal", never exceeding the pipe pressure set in "PressureInternal".
 
−
 
 
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The "PressureExternal" value is set to 100 kPa when the [[Circuitboard (Airlock Control)|Circuitboard (Airlock Control)]] is used in a [[console|Console]]. This is the reason why the airlock is unable to pressurize when the atmosphere surrounding the active vent is unable to reach 100 kPa within the airlock.
 
−
 
 
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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.
 
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−
The "PressureExternal" and "PressureInternal" values can be modified using [[Kit (Logic I/O)|logic chips]] or programmatically via IC10 scripts.
 
−
 
 
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'''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.
 
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'''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.
 
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To calculate the moles per tick, use the following equation:
 
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n = (P * V) / (R * T)
 
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Where (Inward vent):
 
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* P = Min(Room pressure, 10.1325 kPa)
 
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* V = 8000 litres
 
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* n = Moles per tick
 
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* R = Gas constant (8.3144)
 
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* T = Room temperature
 
−
 
 
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Where (Outward vent):
 
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* P = Min(Pipe pressure, 10.1325 kPa)
 
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* V = Pipe volume in litres
 
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* n = Moles per tick
 
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* R = Gas constant (8.3144)
 
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* T = Pipe temperature
 
−
 
 
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(These do not take into account the constraints imposed by "PressureExternal" and "PressureInternal")
 
−
 
 
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'''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 (m<sup>3</sup>).
 
  
 
'''Note''': The insert slot currently takes any item and seems to have no effect.
 
'''Note''': The insert slot currently takes any item and seems to have no effect.
  
 
{{Data Network Header}}
 
{{Data Network Header}}
 +
 
=== Mode Values ===
 
=== Mode Values ===
 
These lists the values and meanings for the "Mode" property of the Active Vent.
 
These lists the values and meanings for the "Mode" property of the Active Vent.
 
{| class="wikitable"
 
{| class="wikitable"
−
|-
+
|-
−
! Value !! Meaning
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! Value !! Meaning
−
|-
+
|-
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| 0 || "Outward" mode (Moves gas from the connected pipe network to the surrounding atmosphere.)
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| 0 || "Outward" mode (Pumping gas from the connected pipe network to the outside.)
−
|-
+
|-
−
| 1 || "Inward" mode (Moves gas from the surrounding atmosphere to the connected pipe network.)
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| 1 || "Inward" mode (Pumping gas from the outside to the connected pipe network.)
−
|}
+
|-
−
{{Data Parameters|
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| 2 || (Unknown)
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{{Data Parameters/row|Power|Boolean|w=0|Can be read to return if the device is correctly powered or not, set via the power system, return 1 if powered and 0 if not|multiple=2|0|Off|1|On}}
+
|}
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{{Data Parameters/row|Open|Integer|1 if device is open, otherwise 0}}
 
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{{Data Parameters/row|Mode|Integer|The mode of the Active Vent.|multiple=2|0|Outward|1|Inward}}
 
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{{Data Parameters/row|Error|Boolean|w=0|1 if device is in error state, otherwise 0|multiple=2|0|<p></p>|1|Error}}
 
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{{Data Parameters/row|PressureExternal|Float|<div>"Outward" mode: Maximum pressure of the surrounding atmosphere. The default value is 101.325 (kPa)<br>
 
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"Inward" mode": Minimum pressure of the surrounding atmosphere. The default value is 0 (kPa)</div>}}
 
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{{Data Parameters/row|PressureInternal|Float|<div>"Outward" mode: Minimum pipe network pressure. The default value is 0 (kPa).<br>
 
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"Inward" mode: Maximum pipe network pressure. The default value is 50662.5 (kPa).</div>}}
 
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{{Data Parameters/row|Lock|Boolean|Disable manual operation of the Active Vent.|multiple=2|0|Unlocked|1|Locked}}
 
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{{Data Parameters/row|Setting|Integer|A variable setting that can be read or written.}}
 
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{{Data Parameters/row|Maximum|Integer|w=0|Maximum setting of the device}}
 
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{{Data Parameters/row|Ratio|Float|w=0|Context specific value depending on device, 0 to 1 based ratio|0.0 to 1.0}}
 
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{{Data Parameters/row|On|Boolean|The current state of the Active Vent.|multiple=2|0|Off|1|On}}
 
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{{Data Parameters/row|RequiredPower|Integer|w=0|Idle operating power quantity, does not necessarily include extra demand power}} 
 
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{{Data Parameters/row|PrefabHash|Integer|w=0|The hash of the structure}}
 
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{{Data Parameters/row|ReferenceId|Integer|w=0|Unique Reference Identifier for this object}}
 
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{{Data Parameters/row|NameHash|Integer|w=0|Provides the hash value for the name of the object as a 32 bit integer.}}
 
−
}}
 
  
−
'''Note''': The value of "PressureExternal" and "PressureInternal" will be reset to the default when changing modes.
+
{{Data Parameters}}
 +
{| class="wikitable"
 +
|-
 +
! Parameter Name !! Data Type !! Description
 +
|-
 +
| Open || Boolean || Does not function.
 +
|-
 +
| Mode || Integer || Sets the Active Vent mode to the passed setting. (See [[#Mode_Values|Mode Values]])
 +
|-
 +
| PressureExternal || Float || Sets the desired external pressure (Will be overwritten by a mode switch. NOTE: Setting this on a vent that is running in "Inward" mode seems to close it, preventing flow of gas)
 +
|-
 +
| PressureInternal || Float || Does not function.
 +
|-
 +
| Lock || Boolean || Locks the Active Vent, when set to 1. Unlocks it, when set to 0.
 +
|-
 +
| Setting || Float || Does not function.
 +
|-
 +
| On || Boolean || Turns the Active Vent on, when set to 1. Turns it off, when set to 0.
 +
|}
  
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'''Note''': If turned on, the vent will still consume energy when the target pressure is reached.
+
{{Data Outputs}}
 +
{| class="wikitable"
 +
|-
 +
! 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 setting of the current mode of the Active Vent. (See [[#Mode_Values|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.
 +
|}
 
</translate>
 
</translate>

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