Heat exchanger - Revision history

Gatetman: In 2.0.7, the relevant 200J/unit-C heat capacity is for steam, not water. (The heat capacity of water is 2kJ/unit-C)

2025-04-16T19:52:42Z

In 2.0.7, the relevant 200J/unit-C heat capacity is for steam, not water. (The heat capacity of water is 2kJ/unit-C)

← Older revision		Revision as of 19:52, 16 April 2025
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	Heat exchangers produce 103 steam/second. This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.		Heat exchangers produce 103 steam/second. This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.

	The steam production rate can also be calculated using the energy consumption: 1 heat exchanger consumes 10MW, so it's putting 10MJ of energy into heating water/steam per second. To heat up 1 unit of ~~water~~ 1 degree, 200 joules are needed,<!--i.e. the specific heat capacity of ~~water~~ is 200 J/(unit.°C) - Factorio doesn't account for latent heat of vaporization--> so the heat exchanger is heating up water by 50,000 unit-°C<!--not simply "°C" - the dimensions are not correct for that unit--> in total. We observe that this heating results in a temperature increase from 15°C to 500°C, so an increase of 485°C. So the 50,000 unit-°C is divided among 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.		The steam production rate can also be calculated using the energy consumption: 1 heat exchanger consumes 10MW, so it's putting 10MJ of energy into heating water/steam per second. To heat up 1 unit of steam 1 degree, 200 joules are needed,<!--i.e. the specific heat capacity of steam is 200 J/(unit.°C) - Factorio doesn't account for latent heat of vaporization--> so the heat exchanger is heating up water by 50,000 unit-°C<!--not simply "°C" - the dimensions are not correct for that unit--> in total. We observe that this heating results in a temperature increase from 15°C to 500°C, so an increase of 485°C. So the 50,000 unit-°C is divided among 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.

	== History ==		== History ==

Alfonse: Space Age annotation.

2025-02-15T23:25:37Z

Space Age annotation.

← Older revision		Revision as of 23:25, 15 February 2025
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	{{Languages}}{{:Infobox:Heat exchanger}}		{{Languages}}{{:Infobox:Heat exchanger}}
	The '''heat exchanger''' exchanges heat between a heat connection (normally from a [[heat pipe]] leading to a [[nuclear reactor]] or [[heating tower]]) and [[water]] to produce [[steam]].		The '''heat exchanger''' exchanges heat between a heat connection (normally from a [[heat pipe]] leading to a [[nuclear reactor]] or [[heating tower]]{{SA}}) and [[water]] to produce [[steam]].

	Heat exchangers produce ~103 steam with a temperature of 500°C every second.		Heat exchangers produce ~103 steam with a temperature of 500°C every second.
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	* [[Steam turbine]]		* [[Steam turbine]]
	* [[Nuclear reactor]]		* [[Nuclear reactor]]
			* [[Heating tower]] {{SA}}
	* [[Heat pipe]]		* [[Heat pipe]]

	{{ProductionNav}}		{{ProductionNav}}
	{{C\|Energy}}		{{C\|Energy}}

Thrawcheld: /* Calculating steam production rate */ technical correction: the figure of 50,000 is "heating" (probably not the correct term) with dimensions of units of water multiplied by temperature, not just temperature

2025-01-26T00:46:39Z

Calculating steam production rate: technical correction: the figure of 50,000 is "heating" (probably not the correct term) with dimensions of units of water multiplied by temperature, not just temperature

← Older revision		Revision as of 00:46, 26 January 2025
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	== Calculating steam production rate ==		== Calculating steam production rate ==

	Heat exchangers produce 103 steam/second. This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.		Heat exchangers produce 103 steam/second. This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.

	The steam production rate can also be calculated using the energy consumption: 1 ~~Heat~~ exchanger consumes 10MW, so it's putting ~~10,000,000 joule~~ of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,~~000°C~~ in total. ~~But the water only gets heated up~~ from 15°C to 500°C, so by 485°C. So the 50,~~000°C are enough to heat up~~ 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.		The steam production rate can also be calculated using the energy consumption: 1 heat exchanger consumes 10MW, so it's putting 10MJ of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed,<!--i.e. the specific heat capacity of water is 200 J/(unit.°C) - Factorio doesn't account for latent heat of vaporization--> so the heat exchanger is heating up water by 50,000 unit-°C<!--not simply "°C" - the dimensions are not correct for that unit--> in total. We observe that this heating results in a temperature increase from 15°C to 500°C, so an increase of 485°C. So the 50,000 unit-°C is divided among 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.

	== History ==		== History ==

Thrawcheld: /* Calculating steam production rate */ spacing

2025-01-25T22:45:37Z

Calculating steam production rate: spacing

← Older revision		Revision as of 22:45, 25 January 2025
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	== Calculating steam production rate ==		== Calculating steam production rate ==

	Heat exchangers produce 103 steam/second.This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.		Heat exchangers produce 103 steam/second. This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.

	The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.		The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.

Thrawcheld: how to provide heat

2025-01-25T22:45:26Z

how to provide heat

← Older revision		Revision as of 22:45, 25 January 2025
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	{{Languages}}{{:Infobox:Heat exchanger}}		{{Languages}}{{:Infobox:Heat exchanger}}
	The '''heat exchanger''' exchanges heat between a heat connection and [[water]] to produce [[steam]].		The '''heat exchanger''' exchanges heat between a heat connection (normally from a [[heat pipe]] leading to a [[nuclear reactor]] or [[heating tower]]) and [[water]] to produce [[steam]].

	Heat exchangers produce ~103 steam with a temperature of 500°C every second.		Heat exchangers produce ~103 steam with a temperature of 500°C every second.

Bilka: Use line from official changelog for history

2025-01-21T16:30:01Z

Use line from official changelog for history

← Older revision		Revision as of 16:30, 21 January 2025
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	== History ==		== History ==
	{{History\|2.0.0\|		{{History\|2.0.7\|
	* ~~Decreased water use by 10x, changing the water:steam ratio from~~ 1~~:1 to 1:~~10.}}		* 1 Water will now produce 10 Steam in boilers/heat exchangers.}}

	{{History\|0.17.67\|		{{History\|0.17.67\|

Redjard: /* History */

2024-11-08T02:52:51Z

History

← Older revision		Revision as of 02:52, 8 November 2024
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	== History ==		== History ==
			{{History\|2.0.0\|
			* Decreased water use by 10x, changing the water:steam ratio from 1:1 to 1:10.}}

	{{History\|0.17.67\|		{{History\|0.17.67\|
	* Heat pipes (also in reactors and heat exchangers) glow with high temperatures.}}		* Heat pipes (also in reactors and heat exchangers) glow with high temperatures.}}

Mefisto1029: /* Calculating steam production rate */

2024-10-24T21:35:49Z

Calculating steam production rate

← Older revision		Revision as of 21:35, 24 October 2024
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	Heat exchangers produce 103 steam/second.This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.		Heat exchangers produce 103 steam/second.This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.

	The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 1:1 ratio, this also means that ~~103~~ units of water are consumed per second.		The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 10:1 ratio, this also means that 10.3 units of water are consumed per second.

	== History ==		== History ==

Jon8RFC: /* History */ add to history

2019-09-13T23:48:17Z

History: add to history

← Older revision		Revision as of 23:48, 13 September 2019
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	== History ==		== History ==
			{{History\|0.17.67\|
			* Heat pipes (also in reactors and heat exchangers) glow with high temperatures.}}

	{{History\|0.15.0\|		{{History\|0.15.0\|
	* Introduced		* Introduced

Diraria at 18:22, 15 June 2019

2019-06-15T18:22:44Z

← Older revision		Revision as of 18:22, 15 June 2019
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	== Calculating steam production rate ==		== Calculating steam production rate ==

	Heat exchangers produce 103 steam/second.This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.~~8MW~~ / 60/s = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835 </code> steam per second.		Heat exchangers produce 103 steam/second.This can be calculated by relying on [[steam turbine]] data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has <code>5.82MW / (60/s) = 0.097 MJ</code> of energy. A heat exchanger produces 10 MJ a second, therefore it produces <code>10MJ / 0.097MJ = 103.0927835</code> steam per second.

	The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 1:1 ratio, this also means that 103 units of water are consumed per second.		The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since <code>50,000 / 485 = 103.09</code>. Since steam is produced from water in a 1:1 ratio, this also means that 103 units of water are consumed per second.