Exhaust air heat pump - Revision history

Designing Buildings at 08:49, 5 July 2021

2021-07-05T08:49:03Z

← Older revision		Revision as of 08:49, 5 July 2021
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	* Renewable energy sources: how they work and what they deliver: Part 3: Electrically driven heat pumps DG 532 3.		* Renewable energy sources: how they work and what they deliver: Part 3: Electrically driven heat pumps DG 532 3.
	* Residential heat pump installations: the role of vocational education and training.		* Residential heat pump installations: the role of vocational education and training.
		+	* Room-based heat pumps.
	* Water source heat pumps.		* Water source heat pumps.

Designing Buildings at 08:26, 8 November 2020

2020-11-08T08:26:28Z

← Older revision		Revision as of 08:26, 8 November 2020
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	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].

−	[[Category:~~Products_/_components~~]] [[Category:DCN_Product_Knowledge]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]

Editor at 13:52, 13 May 2020

2020-05-13T13:52:35Z

← Older revision		Revision as of 13:52, 13 May 2020
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	* Absorption heat pump.		* Absorption heat pump.
	* Air source heat pumps.		* Air source heat pumps.
		+	* BSRIA global heat pump market 2019.
	* Coefficient of Performance CoP.		* Coefficient of Performance CoP.
	* Domestic heat pumps and the electricity supply system.		* Domestic heat pumps and the electricity supply system.
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	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].

−	[[Category:Products_/_components]]	+	[[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 09:11, 11 May 2019

2019-05-11T09:11:39Z

← Older revision		Revision as of 09:11, 11 May 2019
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−	~~See also Mechanical ventilation with heat recovery (MVHR)~~
−
	= Introduction =		= Introduction =

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	A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].		A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki. =
−		+
−	=== Related articles on Designing Buildings Wiki. ===	+

	* Absorption heat pump.		* Absorption heat pump.
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	* Water source heat pumps.		* Water source heat pumps.

−	=== External references ===	+	= External references =

	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Designing Buildings at 10:13, 18 August 2018

2018-08-18T10:13:17Z

← Older revision		Revision as of 10:13, 18 August 2018
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	* Absorption heat pump.		* Absorption heat pump.
−	* Actuator.
	* Air source heat pumps.		* Air source heat pumps.
	* Coefficient of Performance CoP.		* Coefficient of Performance CoP.
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	* Heat exchanger.		* Heat exchanger.
	* Heat pump.		* Heat pump.
−	* ~~Heat recovery.~~	+	* Renewable energy sources: how they work and what they deliver: Part 3: Electrically driven heat pumps DG 532 3.
−	* Mechanical ventilation with heat ~~recovery.~~	+
−	* Phase change.	+
	* Residential heat pump installations: the role of vocational education and training.		* Residential heat pump installations: the role of vocational education and training.
	* Water source heat pumps.		* Water source heat pumps.

Editor at 12:07, 16 September 2016

2016-09-16T12:07:19Z

← Older revision		Revision as of 12:07, 16 September 2016
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	* Actuator.		* Actuator.
	* Air source heat pumps.		* Air source heat pumps.
		+	* Coefficient of Performance CoP.
	* Domestic heat pumps and the electricity supply system.		* Domestic heat pumps and the electricity supply system.
	* Dynamic thermal modelling of closed loop geothermal heat pump systems.		* Dynamic thermal modelling of closed loop geothermal heat pump systems.

Editor at 14:34, 2 September 2016

2016-09-02T14:34:48Z

← Older revision		Revision as of 14:34, 2 September 2016
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−
	See also Mechanical ventilation with heat recovery (MVHR)		See also Mechanical ventilation with heat recovery (MVHR)

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	The main benefits of using exhaust air heat pumps include:		The main benefits of using exhaust air heat pumps include:
−	*Reduction in the cost of fuel bills.	+
−	*Reduction in the environmental impact of buildings through a reduction in ~~CO<sub>2</sub>~~ emissions.	+	* Reduction in the cost of fuel bills.
−	*Contribution to compliance with building regulation requirements.	+	* Reduction in the environmental impact of buildings through a reduction in CO2 emissions.
−	*Continuous ventilation of building which can help improve indoor air quality and prevent condensation.	+	* Contribution to compliance with building regulation requirements.
		+	* Continuous ventilation of building which can help improve indoor air quality and prevent condensation.

	= Disadvantages exhaust air heat pumps =		= Disadvantages exhaust air heat pumps =

	There are some disadvantages to exhaust air heat pump systems including:		There are some disadvantages to exhaust air heat pump systems including:
−	*Installation costs can be high.	+
−	*Retrofitting can be disruptive and expensive.	+	* Installation costs can be high.
−	*They work most efficiently with underfloor heating systems since they typically heat the water to lower temperatures than traditional radiator systems. Although radiators can work at lower temperatures, they will take longer to heat up rooms.	+	* Retrofitting can be disruptive and expensive.
−	*It may not possible to rely on exhaust air heat pump systems in isolation for all heating needs and so a secondary system may be required.	+	* They work most efficiently with underfloor heating systems since they typically heat the water to lower temperatures than traditional radiator systems. Although radiators can work at lower temperatures, they will take longer to heat up rooms.
−	*Heat pump efficiency can be significantly compromised by incorrect specification, poor installation, incorrect commissioning and incorrect operation. See Residential heat pump installations: the role of vocational education and training.	+	* It may not possible to rely on exhaust air heat pump systems in isolation for all heating needs and so a secondary system may be required.
		+	* Heat pump efficiency can be significantly compromised by incorrect specification, poor installation, incorrect commissioning and incorrect operation. See Residential heat pump installations: the role of vocational education and training.

	A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].		A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].
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	=== Related articles on Designing Buildings Wiki. ===		=== Related articles on Designing Buildings Wiki. ===
−	*Absorption heat pump.	+
−	*Air source heat pumps.	+	* Absorption heat pump.
−	*Domestic heat pumps and the electricity supply system.	+	* Actuator.
−	*Dynamic thermal modelling of closed loop geothermal heat pump systems.	+	* Air source heat pumps.
−	*Earth-to-air heat exchangers.	+	* Domestic heat pumps and the electricity supply system.
−	*Ground source heat pumps.	+	* Dynamic thermal modelling of closed loop geothermal heat pump systems.
−	*Heat exchanger.	+	* Earth-to-air heat exchangers.
−	*Heat pump.	+	* Ground source heat pumps.
−	*Heat recovery.	+	* Heat exchanger.
−	*Mechanical ventilation with heat recovery.	+	* Heat pump.
−	*Phase change.	+	* Heat recovery.
−	*Residential heat pump installations: the role of vocational education and training.	+	* Mechanical ventilation with heat recovery.
−	*Water source heat pumps.	+	* Phase change.
		+	* Residential heat pump installations: the role of vocational education and training.
		+	* Water source heat pumps.

	=== External references ===		=== External references ===
−	*[https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].	+
		+	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Designing Buildings at 10:18, 17 November 2015

2015-11-17T10:18:15Z

← Older revision		Revision as of 10:18, 17 November 2015
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−

	See also Mechanical ventilation with heat recovery (MVHR)		See also Mechanical ventilation with heat recovery (MVHR)
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	= Introduction =		= Introduction =

−	~~An exhaust~~ air heat ~~pump collects~~ warm air as it leaves a building via the ventilation system and then ~~reuses it~~ to heat fresh air coming into the building or to heat water. Exhaust air heat pumps operate on a similar basis to other heat pumps such as air source heat pumps and ground source heat pumps and are ~~good~~ for providing hot water and heating for buildings such as houses, apartments or flats. Exhaust air heat pumps are often used in conjunction with underfloor heating systems and have been used extensively in countries such as Germany and Sweden.	+	Exhaust air heat pumps collect warm air as it leaves a building via the ventilation system and then reuse the heat that would otherwise be lost to the outside to heat fresh air coming into the building or to heat water. Exhaust air heat pumps operate on a similar basis to other heat pumps such as air source heat pumps and ground source heat pumps and are suitable for providing hot water and heating for buildings such as houses, apartments or flats. Exhaust air heat pumps are often used in conjunction with underfloor heating systems and have been used extensively in countries such as Germany and Sweden.

−	= Components and system ~~overview~~ =	+	= Components and system =

	The typical basic components of an exhaust air heat pump comprise a hot water cylinder, heating coil, extractor fan and a heat pump.		The typical basic components of an exhaust air heat pump comprise a hot water cylinder, heating coil, extractor fan and a heat pump.

−	The system works by extracting ~~the~~ air through a series of ventilation ducts ~~in wet~~ rooms such as bathrooms, utility rooms and kitchens. The heat energy in the air is passed over a heat exchanger which then transfers the energy to refrigerant. The refrigerant boils and evaporates and as a gas, it is then compressed. As the compression takes place, heat is ~~created~~ which is then transferred to the hot water ~~and~~ heating system.	+	The system works by extracting air through a series of ventilation ducts from moisture-producing rooms such as bathrooms, utility rooms and kitchens. The heat energy in the air is passed over a heat exchanger which then transfers the energy to a refrigerant. The refrigerant boils and evaporates and as a gas, it is then compressed. As the compression takes place, heat is released which is then transferred to the hot water supply, or to the hot water heating system, or to incoming air which supplies non-moisture producing spaces such as bedrooms and living rooms.

−	As a series of ducts are required through the building to allow the flow of air to the exhaust air heat pump, installation tends to happen during the original construction of ~~the building~~. Retrofitting into existing buildings may not be practical or cost-effective.	+	As a series of ducts are required through the building to allow the flow of air to and from the exhaust air heat pump, installation tends to happen during the original construction of buildings. Retrofitting into existing buildings may not be practical or cost-effective.

−	= Benefits of exhaust air heat pumps =	+	= Benefits of exhaust air heat pumps =

	The main benefits of using exhaust air heat pumps include:		The main benefits of using exhaust air heat pumps include:
	*Reduction in the cost of fuel bills.		*Reduction in the cost of fuel bills.
−	*Reduction in the environmental impact of ~~the building~~ through a reduction in CO<sub>2</sub> emissions.	+	*Reduction in the environmental impact of buildings through a reduction in CO<sub>2</sub> emissions.
−	*~~Contributes~~ to compliance with building regulation requirements.	+	*Contribution to compliance with building regulation requirements.
−	*~~The continuous~~ ventilation of a building can help improve indoor air quality and prevent condensation.	+	*Continuous ventilation of building which can help improve indoor air quality and prevent condensation.

	= Disadvantages exhaust air heat pumps =		= Disadvantages exhaust air heat pumps =
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	There are some disadvantages to exhaust air heat pump systems including:		There are some disadvantages to exhaust air heat pump systems including:
	*Installation costs can be high.		*Installation costs can be high.
−	*They work most efficiently with underfloor heating systems since they typically heat the water to lower temperatures than traditional radiator systems. Although ~~the~~ radiators can work at ~~the~~ lower temperatures, they will take longer to heat up ~~the room~~.	+	*Retrofitting can be disruptive and expensive.
−	*It may not possible to rely on exhaust air heat pump systems in isolation for all heating needs and so a secondary system ~~is require~~.	+	*They work most efficiently with underfloor heating systems since they typically heat the water to lower temperatures than traditional radiator systems. Although radiators can work at lower temperatures, they will take longer to heat up rooms.
		+	*It may not possible to rely on exhaust air heat pump systems in isolation for all heating needs and so a secondary system may be required.
	*Heat pump efficiency can be significantly compromised by incorrect specification, poor installation, incorrect commissioning and incorrect operation. See Residential heat pump installations: the role of vocational education and training.		*Heat pump efficiency can be significantly compromised by incorrect specification, poor installation, incorrect commissioning and incorrect operation. See Residential heat pump installations: the role of vocational education and training.

−	A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing ~~flats,~~ based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].	+	A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].

	= Find out more =		= Find out more =

Designing Buildings: Created page with " See also Mechanical ventilation with heat recovery (MVHR) = Introduction = An exhaust air heat pump collects warm air as it leaves a building via the ventilation system and t..."

2015-11-17T10:11:16Z

Created page with " See also Mechanical ventilation with heat recovery (MVHR) = Introduction = An exhaust air heat pump collects warm air as it leaves a building via the ventilation system and t..."

New page

See also Mechanical ventilation with heat recovery (MVHR)

= Introduction =

An exhaust air heat pump collects warm air as it leaves a building via the ventilation system and then reuses it to heat fresh air coming into the building or to heat water. Exhaust air heat pumps operate on a similar basis to other heat pumps such as air source heat pumps and ground source heat pumps and are good for providing hot water and heating for buildings such as houses, apartments or flats. Exhaust air heat pumps are often used in conjunction with underfloor heating systems and have been used extensively in countries such as Germany and Sweden.

= Components and system overview =

The typical basic components of an exhaust air heat pump comprise a hot water cylinder, heating coil, extractor fan and a heat pump.

The system works by extracting the air through a series of ventilation ducts in wet rooms such as bathrooms, utility rooms and kitchens. The heat energy in the air is passed over a heat exchanger which then transfers the energy to refrigerant. The refrigerant boils and evaporates and as a gas, it is then compressed. As the compression takes place, heat is created which is then transferred to the hot water and heating system.

As a series of ducts are required through the building to allow the flow of air to the exhaust air heat pump, installation tends to happen during the original construction of the building. Retrofitting into existing buildings may not be practical or cost-effective.

= Benefits of exhaust air heat pumps =

The main benefits of using exhaust air heat pumps include:
*Reduction in the cost of fuel bills.
*Reduction in the environmental impact of the building through a reduction in CO<sub>2</sub> emissions.
*Contributes to compliance with building regulation requirements.
*The continuous ventilation of a building can help improve indoor air quality and prevent condensation.

= Disadvantages exhaust air heat pumps =

There are some disadvantages to exhaust air heat pump systems including:
*Installation costs can be high.
*They work most efficiently with underfloor heating systems since they typically heat the water to lower temperatures than traditional radiator systems. Although the radiators can work at the lower temperatures, they will take longer to heat up the room.
*It may not possible to rely on exhaust air heat pump systems in isolation for all heating needs and so a secondary system is require.
*Heat pump efficiency can be significantly compromised by incorrect specification, poor installation, incorrect commissioning and incorrect operation. See Residential heat pump installations: the role of vocational education and training.

A recent government study is available which considers the efficiency of exhaust air heat pumps installed in social housing flats, based on investigations carried out between 2010 and 2013. Ref [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf DECC, Performance of exhaust air source heat pumps: Summary of detailed monitoring results].

= Find out more =

=== Related articles on Designing Buildings Wiki. ===
*Absorption heat pump.
*Air source heat pumps.
*Domestic heat pumps and the electricity supply system.
*Dynamic thermal modelling of closed loop geothermal heat pump systems.
*Earth-to-air heat exchangers.
*Ground source heat pumps.
*Heat exchanger.
*Heat pump.
*Heat recovery.
*Mechanical ventilation with heat recovery.
*Phase change.
*Residential heat pump installations: the role of vocational education and training.
*Water source heat pumps.

=== External references ===
*[https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255762/summary_detailed_monitoring_2_flats_exhaust_air_source_heat_pumps.pdf Performance of exhaust air heat pumps: government study].

[[Category:Products_/_components]]