High Temperature Air Source Heat Pumps HTASHP - Revision history

Editor at 07:14, 7 December 2025

2025-12-07T07:14:29Z

← Older revision		Revision as of 07:14, 7 December 2025
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	All ASHPs work by running a refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature or dual compressed for high temperature systems and passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats. It is the same process that is used to extract heat from a fridge and can be used domestically or commercially and some systems can also be used to extract heat from buildings to provide cooling.		All ASHPs work by running a refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature or dual compressed for high temperature systems and passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats. It is the same process that is used to extract heat from a fridge and can be used domestically or commercially and some systems can also be used to extract heat from buildings to provide cooling.

−	[[Category:~~Articles_needing_more_work~~]]	+	= Related articles on Designing Buildings =
		+
		+	* Absorption heat pump.
		+	* Actuator.
		+	* BSRIA domestic hot water heat pumps testing.
		+	* Coefficient of Performance CoP.
		+	* Combined heat and power CHP.
		+	* Earth-to-air heat exchangers.
		+	* Exhaust air heat pump.
		+	* Geothermal piles.
		+	* Green Deal.
		+	* Ground energy options.
		+	* Ground pre-conditioning of supply air.
		+	* Ground source heat pumps.
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		+	* Low Temperature Air Source Heat Pumps LTASHP
		+	* Product Characteristics Database PCDB.
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		+	* Solar thermal systems.
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		+	* What is diversity in HVAC systems?
		+
		+	[[Category:DCN_Commentary]] [[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Specification]] [[Category:DCN_Standard]] [[Category:Definitions]] [[Category:Standards_/_measurements]] [[Category:Sustainability]]

Editor at 12:04, 5 December 2025

2025-12-05T12:04:42Z

← Older revision		Revision as of 12:04, 5 December 2025
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−	Air source heat pumps (ASHPs) use the external air as a heat source to provide heat for buildings, there are ~~effectlvey~~ three types of ASHP, differentiated by the output temperatures they can achieve; high, medium or low temperature.	+	Air source heat pumps (ASHPs) use the external air as a heat source to provide heat for buildings, there are effectively three types of ASHP, differentiated by the output temperatures they can achieve; high, medium or low temperature. High-Temperature Air Source Heat Pumps (HTASHPs) tend to use more robust components and specialised refrigerants (such as R290/R32), as well as dual compression systems to achieve hotter temperatures than standard ASHPs.

−	~~They work by running~~ a ~~low-temperature, lower pressure refrigerant fluid in heat exchanger coils through the external air~~. ~~The fluid ‘absorbs’ heat from the air and boils, even~~ at ~~temperatures below 0° C (although the coefficient~~ of ~~performance~~(~~COP~~) decreases with lower temperature). The gas is then compressed, which further increases its temperature. The gas is passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats.	+	Output or flow temperatures with a maximum of 55°C are considered Low Temperature Air Source Heat Pumps (LTASHPs) and most suitable for systems such as underfloor heating or larger surface radiator systems. Medium Temperature Air Source Heat Pumps (MTASHPs) run at a maximum of around 65°C, whilst High-Temperature Air Source Heat Pumps (HTASHPs) can achieve temperatures as high as 80°C.

−	~~This~~ is the same process that is used to extract heat from a fridge~~. It~~ can be used domestically or commercially and some systems can also be used to extract heat from ~~a building~~ to provide cooling.	+	All ASHPs work by running a refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature or dual compressed for high temperature systems and passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats. It is the same process that is used to extract heat from a fridge and can be used domestically or commercially and some systems can also be used to extract heat from buildings to provide cooling.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor at 10:09, 5 December 2025

2025-12-05T10:09:01Z

← Older revision		Revision as of 10:09, 5 December 2025
Line 1:		Line 1:
−	Air source heat pumps (ASHPs) use the external air as a heat source to provide heat for buildings, there are effectlvey three types of ASHP, differentiated by the output temperatures they can achieve.	+	Air source heat pumps (ASHPs) use the external air as a heat source to provide heat for buildings, there are effectlvey three types of ASHP, differentiated by the output temperatures they can achieve; high, medium or low temperature.

	They work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance(COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature. The gas is passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats.		They work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance(COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature. The gas is passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats.

Editor at 10:05, 5 December 2025

2025-12-05T10:05:56Z

← Older revision		Revision as of 10:05, 5 December 2025
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−	~~cxx~~	+	Air source heat pumps (ASHPs) use the external air as a heat source to provide heat for buildings, there are effectlvey three types of ASHP, differentiated by the output temperatures they can achieve.
		+
		+	They work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through the external air. The fluid ‘absorbs’ heat from the air and boils, even at temperatures below 0° C (although the coefficient of performance(COP) decreases with lower temperature). The gas is then compressed, which further increases its temperature. The gas is passed into heat exchanger coils, where it condenses, releasing its latent heat. The process then repeats.
		+
		+	This is the same process that is used to extract heat from a fridge. It can be used domestically or commercially and some systems can also be used to extract heat from a building to provide cooling.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor: moved High temperature air source heat pumps to High Temperature Air Source Heat Pumps HTASHP

2025-12-05T09:38:28Z

moved High temperature air source heat pumps to High Temperature Air Source Heat Pumps HTASHP

← Older revision

Revision as of 09:38, 5 December 2025

Editor: Created page with "cxx Category:Articles_needing_more_work "

2025-12-05T09:37:55Z

Created page with "cxx Category:Articles_needing_more_work "

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[[Category:Articles_needing_more_work]]