In other languages: Deutsch Nederlands Português do Brasil Русский 中文

Heat pipe: Difference between revisions

From Official Factorio Wiki
Jump to navigation Jump to search
m (Clarifying note about placement order.)
mNo edit summary
 
(11 intermediate revisions by 6 users not shown)
Line 1: Line 1:
{{Languages}}
{{Languages}}
{{Stub}}
{{:Infobox:Heat pipe}}
{{:Heat pipe/infobox}}


The '''heat pipe''' can transport heat over longer distances and connect devices which produce and use heat. Currently this is limited to [[Heat exchanger|heat exchangers]] and [[Nuclear reactor|nuclear reactors]].
The '''heat pipe''' can transport heat over longer distances and connect devices which produce and use heat. Currently this is limited to [[heat exchanger]]s and [[nuclear reactor]]s.


Heat pipes have a heat capacity of 1 MJ/C. Thus, they can theoretically buffer 500 MJ of heat energy across their working range of 500C to 1000C, making them a space-efficient energy store. However, because temperature needs a drop of greater than 1 degree before it will "flow," you can't raise them all the way to 1000C or drain them all the way to 500C, so the practical energy capacity will depend on the layout.
Heat pipes have a heat capacity of 1 MJ/°C. Thus, they can theoretically buffer 500 MJ of heat energy across their working range of 500°C to 1000°C, making them a space-efficient energy store. However, because temperature needs a drop of greater than 1 degree before it will "flow," you can't raise them all the way to 1000°C or drain them all the way to 500°C, so the practical energy capacity will depend on the layout.


== Direction of transfer ==
As heat pipes rise in temperature, they will give off a very low-distance glow.


Heat pipes currently are directional and feed heat well in one direction and poorly in the other. Specifically, heat flows well from components placed earlier to components placed later, and poorly in reverse. There is no way of visually identifying which way a heat pipe is laid so care must be taken to place them in order, starting from the reactors and working towards the heat sinks. They are therefore unsuitable for placement by [[construction robot|construction bots]].
== Heat pipe throughput ==


[https://forums.factorio.com/viewtopic.php?f=23&t=44972 Source]
Heat pipes are acting very similarly to fluid [[pipe]]s: they each hold an amount of heat energy and there is a limit to how much energy can go through each of them for a given duration.
 
For any heat pipe entity with one input connection on one side and one output connection on another, this entity with lower the temperature by <code>1 + (P / 15) °C</code> with P being the power going through this entity expressed in MW.
 
Since a nuclear power plant can have at most 500°C difference between the hottest (a [[nuclear reactor]]) and coldest (a [[heat exchanger]]) points of the system, that means that we can express the maximum length of a straight line of heat pipe as <code>500 / (1 + P/15)</code>.
 
For example let's take a single [[nuclear reactor]] outputting 40MW of heat power to a single line of heat pipes. The furthest that line can go is <code>500 / (1 + 40/15)</code> which is around 136 heat pipes long.


== History ==
== History ==
{{History|0.17.67|
* Heat pipes (also in reactors and heat exchangers) glow with high temperatures.}}
{{History|0.15.11|
* Changed heat transfer mechanics, prior to this heat would flow better following the order of heat pipe placement}}
{{History|0.15.0|
{{History|0.15.0|
* Introduced}}
* Introduced}}


== See also ==
== See also ==
* [[Nuclear power]]
* [[Power production#Nuclear power|Power production]]
** [[Heat exchanger]]
* [[Heat exchanger]]




{{ProductionNav}}
{{ProductionNav}}
{{C|Nuclear power}}
{{C|Energy}}

Latest revision as of 22:25, 15 September 2022

Heat pipe.png
Heat pipe

Heat pipe anim.gif

Recipe

Time.png
1
+
Copper plate.png
20
+
Steel plate.png
10
Heat pipe.png
1

Total raw

Time.png
1
+
Copper plate.png
20
+
Steel plate.png
10

Map color

Health

200

Resistances

Explosion: 0/30%
Fire: 0/90%
Impact: 0/30%

Stack size

50

Dimensions

1×1

Maximum temperature

1000 °C

Mining time

0.1

Prototype type

heat-pipe

Internal name

heat-pipe

Required technologies

Nuclear power (research).png

Produced by

Assembling machine 1.png
Assembling machine 2.png
Assembling machine 3.png
Player.png

The heat pipe can transport heat over longer distances and connect devices which produce and use heat. Currently this is limited to heat exchangers and nuclear reactors.

Heat pipes have a heat capacity of 1 MJ/°C. Thus, they can theoretically buffer 500 MJ of heat energy across their working range of 500°C to 1000°C, making them a space-efficient energy store. However, because temperature needs a drop of greater than 1 degree before it will "flow," you can't raise them all the way to 1000°C or drain them all the way to 500°C, so the practical energy capacity will depend on the layout.

As heat pipes rise in temperature, they will give off a very low-distance glow.

Heat pipe throughput

Heat pipes are acting very similarly to fluid pipes: they each hold an amount of heat energy and there is a limit to how much energy can go through each of them for a given duration.

For any heat pipe entity with one input connection on one side and one output connection on another, this entity with lower the temperature by 1 + (P / 15) °C with P being the power going through this entity expressed in MW.

Since a nuclear power plant can have at most 500°C difference between the hottest (a nuclear reactor) and coldest (a heat exchanger) points of the system, that means that we can express the maximum length of a straight line of heat pipe as 500 / (1 + P/15).

For example let's take a single nuclear reactor outputting 40MW of heat power to a single line of heat pipes. The furthest that line can go is 500 / (1 + 40/15) which is around 136 heat pipes long.

History

  • 0.17.67:
    • Heat pipes (also in reactors and heat exchangers) glow with high temperatures.
  • 0.15.11:
    • Changed heat transfer mechanics, prior to this heat would flow better following the order of heat pipe placement

See also