Archive:000/Heat pump - Revision history

Elie: Elie moved page Heat pump to Archive:000/Heat pump without leaving a redirect: Huge_refactor

2024-10-26T20:29:45Z

Elie moved page Heat pump to Archive:000/Heat pump without leaving a redirect: Huge_refactor

← Older revision	Revision as of 16:29, 26 October 2024
(No difference)

Elie at 06:40, 30 August 2023

2023-08-30T06:40:56Z

← Older revision		Revision as of 02:40, 30 August 2023
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	Worse: When electricity is generated by [[fossil fuels]], electric heating has up to 3 times the carbon emissions of just burning the fossil fuels directly in a [[natural gas]] furnace {{p2\|[see why]\|Most coal or natural gas power plants are only 33% efficient. They work by boiling water and driving a turbine.{{minor\|Exception: Newer "combined cycle" natural gas power plants can get up to 60% efficient. But for heating homes, that's still less efficient than burning the natural gas at home.<br /><br />Also note: Electricity has losses in transmission too (power lines) - typically about 5%.}} }}. Heat pumps are almost never efficient enough to make up for this.		Worse: When electricity is generated by [[fossil fuels]], electric heating has up to 3 times the carbon emissions of just burning the fossil fuels directly in a [[natural gas]] furnace {{p2\|[see why]\|Most coal or natural gas power plants are only 33% efficient. They work by boiling water and driving a turbine.{{minor\|Exception: Newer "combined cycle" natural gas power plants can get up to 60% efficient. But for heating homes, that's still less efficient than burning the natural gas at home.<br /><br />Also note: Electricity has losses in transmission too (power lines) - typically about 5%.}} }}. Heat pumps are almost never efficient enough to make up for this.

			Maybe it's worth getting a heat pump if you live in an area where winters are moderate and electricity is generated mostly by renewables or nuclear.<sup>[WORLD MAP needed]</sup>

	<tab name="Research needed for this section">		<tab name="Research needed for this section">
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	==Refrigerant chemicals==		==Refrigerant chemicals==
	{{sum\|~~Long-term problem~~ {{rn}} }}		{{sum\|{{qn}} }}

	Because of how heat pumps work,<!-- TODO: add a section about how they work --> they must contain a substance known as a ''refrigerant''. Most refrigerants in use today{{en}} happen to be potent [[greenhouse gases]]. They aren't supposed to leak out into the atmosphere - but they sometimes do, if the heat pump gets old or is disposed of improperly.		Because of how heat pumps work,<!-- TODO: add a section about how they work --> they must contain a substance known as a ''refrigerant''. Most refrigerants in use today{{en}} happen to be potent [[greenhouse gases]]. They aren't supposed to leak out into the atmosphere - but they sometimes do, if the heat pump gets old or is disposed of improperly.

Elie at 05:36, 30 August 2023

2023-08-30T05:36:43Z

← Older revision		Revision as of 01:36, 30 August 2023
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	* Solutions		* Solutions
	** Are there any alternatives - [[refrigerants]] that aren't greenhouse gases? And are there tradeoffs? {{npn}}		** Are there any alternatives - [[refrigerants]] that aren't greenhouse gases? And are there tradeoffs? {{npn}}

			==See also==
			* [[Heating]]
			* [[Map of electricity by source]]

			<!-- TALK: rename this page to "heating with heat pumps"? -->

Elie: /* Energy usage */

2023-08-30T05:35:31Z

Energy usage

← Older revision		Revision as of 01:35, 30 August 2023
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	{{considerations}} __NOTOC__		{{considerations}} __NOTOC__

	==Energy ~~usage~~==		==Energy efficiency==
	{{sum\|~~Moderate~~}}		{{sum\|Only in some cases}}

	Heat pumps ~~are '''~~more energy-efficient~~'''~~ than electric heaters.{{qn}}		Heat pumps can be more energy-efficient than electric heaters. But this efficiency gain disappears when the outdoor temperature is cold enough.{{qn}}

			Worse: When electricity is generated by [[fossil fuels]], electric heating has up to 3 times the carbon emissions of just burning the fossil fuels directly in a [[natural gas]] furnace {{p2\|[see why]\|Most coal or natural gas power plants are only 33% efficient. They work by boiling water and driving a turbine.{{minor\|Exception: Newer "combined cycle" natural gas power plants can get up to 60% efficient. But for heating homes, that's still less efficient than burning the natural gas at home.<br /><br />Also note: Electricity has losses in transmission too (power lines) - typically about 5%.}} }}. Heat pumps are almost never efficient enough to make up for this.

	''Research needed~~:''~~		<tab name="Research needed for this section">
	* ''How much'' more energy-efficient can a ~~heat pump be?~~		{{minor\|Can be a case study or generalized statistics}}
	** How does this depend on outdoor temperature?		* Need graph: Heat pump efficiency vs outdoor temperature.
	* Life cycle analysis		* Life cycle analysis
	** How much energy does it typically take to ''manufacture and install'' a heat pump?		** How much energy does it typically take to ''manufacture and install'' a heat pump?
	** How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?		** How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?
	*** Are there any "reversible" heat pumps that can work for both heating and cooling? {{p2\|(why)\|~ Manufacturing half as much stuff would certainly reduce life cycle emissions.<br /><br />~ Use cases:<br />- - ~ New construction<br />- - ~ Any time someone has to replace their air conditioner anyway<br />- - ~ Any time someone has to replace their heating system anyway, and doesn't already have an air conditoner but could use one}}		*** Are there any "reversible" heat pumps that can work for both heating and cooling? {{p2\|(why)\|~ Manufacturing half as much stuff would certainly reduce life cycle emissions.<br /><br />~ Use cases:<br />- - ~ New construction<br />- - ~ Any time someone has to replace their air conditioner anyway<br />- - ~ Any time someone has to replace their heating system anyway, and doesn't already have an air conditoner but could use one}}
			</tab>

	==Refrigerant chemicals==		==Refrigerant chemicals==

Elie at 00:31, 18 May 2023

2023-05-18T00:31:24Z

← Older revision		Revision as of 20:31, 17 May 2023
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	An electric '''heat pump''' is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.		An electric '''heat pump''' is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.

	~~<!--~~{{considerations}} __NOTOC__~~-->~~		{{considerations}} __NOTOC__

	==Energy usage==		==Energy usage==

Elie at 00:31, 18 May 2023

2023-05-18T00:31:06Z

← Older revision		Revision as of 20:31, 17 May 2023
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	An electric heat pump is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.		An electric '''heat pump''' is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.

	{{considerations}}		<!--{{considerations}} __NOTOC__-->

	==Energy usage==		==Energy usage==
Line 7:		Line 7:

	Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}}		Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}}


	''Research needed:''		''Research needed:''
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	** How much energy does it typically take to ''manufacture and install'' a heat pump?		** How much energy does it typically take to ''manufacture and install'' a heat pump?
	** How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?		** How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?
			*** Are there any "reversible" heat pumps that can work for both heating and cooling? {{p2\|(why)\|~ Manufacturing half as much stuff would certainly reduce life cycle emissions.<br /><br />~ Use cases:<br />- - ~ New construction<br />- - ~ Any time someone has to replace their air conditioner anyway<br />- - ~ Any time someone has to replace their heating system anyway, and doesn't already have an air conditoner but could use one}}

	==Refrigerant chemicals==		==Refrigerant chemicals==
	{{sum\|Long-term problem{{rn}} }}		{{sum\|Long-term problem {{rn}} }}

	Because of how heat pumps work,<!-- TODO: add a section about how they work --> they must contain a substance known as a ''refrigerant''. Most refrigerants in use today{{en}} happen to be potent [[greenhouse gases]]. They aren't supposed to leak out into the atmosphere - but they sometimes do, if the heat pump gets old or is disposed of improperly.		Because of how heat pumps work,<!-- TODO: add a section about how they work --> they must contain a substance known as a ''refrigerant''. Most refrigerants in use today{{en}} happen to be potent [[greenhouse gases]]. They aren't supposed to leak out into the atmosphere - but they sometimes do, if the heat pump gets old or is disposed of improperly.


	''This section is incomplete. It needs:''		''This section is incomplete. It needs:''

Elie: Elie moved page Heat pumps to Heat pump

2023-05-17T23:42:25Z

Elie moved page Heat pumps to Heat pump

← Older revision	Revision as of 19:42, 17 May 2023
(No difference)

Elie at 23:16, 17 May 2023

2023-05-17T23:16:06Z

← Older revision		Revision as of 19:16, 17 May 2023
Line 1:		Line 1:
	An electric heat pump is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.		An electric heat pump is one way to [[heating\|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.

			{{considerations}}

			==Energy usage==
			{{sum\|Moderate}}

	Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}}		Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}}

	==Research needed ~~for this page==~~		''Research needed:''
	* ''How much'' more energy-efficient can a heat pump be?		* ''How much'' more energy-efficient can a heat pump be?
	** How does this depend on outdoor temperature?		** How does this depend on outdoor temperature?
	* How much energy does it typically take to ''manufacture and install'' a heat pump?		* Life cycle analysis
	* ~~Do heat pumps involve any rare minerals or pollutant gases? To what extent is this a concern?~~		** How much energy does it typically take to ''manufacture and install'' a heat pump?
	* How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?		** How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?

			==Refrigerant chemicals==
			{{sum\|Long-term problem{{rn}} }}

			Because of how heat pumps work,<!-- TODO: add a section about how they work --> they must contain a substance known as a ''refrigerant''. Most refrigerants in use today{{en}} happen to be potent [[greenhouse gases]]. They aren't supposed to leak out into the atmosphere - but they sometimes do, if the heat pump gets old or is disposed of improperly.

			''This section is incomplete. It needs:''
			* Quantification
			** How much of [[climate change]] is due to refrigerants?
			** How much worse would it be if we all used heat pumps to heat our homes?
			** How does this compare to the status quo of heating (often [[natural gas]])?
			* Solutions
			** Are there any alternatives - [[refrigerants]] that aren't greenhouse gases? And are there tradeoffs? {{npn}}

Elie: /* Research needed for this page */

2023-02-20T02:46:45Z

Research needed for this page

← Older revision		Revision as of 22:46, 19 February 2023
Line 8:		Line 8:
	* How much energy does it typically take to ''manufacture and install'' a heat pump?		* How much energy does it typically take to ''manufacture and install'' a heat pump?
	* Do heat pumps involve any rare minerals or pollutant gases? To what extent is this a concern?		* Do heat pumps involve any rare minerals or pollutant gases? To what extent is this a concern?
			* How often (if ever) is it viable/worthwhile to repurpose an air conditioner in the winter, to help with heating?

Elie: Created page with "An electric heat pump is one way to heat a building. It works a lot like air conditioning but in reverse: The hot air goes indoors; the cold air goes outdoors. Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}} ==Research needed for this page== * ''How much'' more energy-efficient can a heat pump be? ** How does this depend on outdoor temperature? * How much energy does it typically take to ''manufacture and install'' a heat pump? *..."

2022-12-28T06:32:28Z

Created page with "An electric heat pump is one way to heat a building. It works a lot like air conditioning but in reverse: The hot air goes indoors; the cold air goes outdoors. Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}} ==Research needed for this page== * ''How much'' more energy-efficient can a heat pump be? ** How does this depend on outdoor temperature? * How much energy does it typically take to ''manufacture and install'' a heat pump? *..."

New page

An electric heat pump is one way to [[heating|heat a building]]. It works a lot like [[air conditioning]] but in reverse: The hot air goes indoors; the cold air goes outdoors.

Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}}

==Research needed for this page==
* ''How much'' more energy-efficient can a heat pump be?
** How does this depend on outdoor temperature?
* How much energy does it typically take to ''manufacture and install'' a heat pump?
* Do heat pumps involve any rare minerals or pollutant gases? To what extent is this a concern?