Heat recovery for buildings - Revision history

Designing Buildings at 08:37, 20 February 2025

2025-02-20T08:37:58Z

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	In February 2023 the [https://amp.theguardian.com/environment/2023/feb/23/recapturing-excess-heat-could-power-most-of-europe-say-experts Guardian reported] on the report published by [https://www.whyenergyefficiency.com/solutions/allsolutions/the-worlds-largest-untapped-energy-source-excess-heat?utm_source=pressrelease&utm_medium=generic&utm_campaign=cf_whitepaperexcessheat#the_solutions_exist Danfoss noted in their heat excess whitepaper] that excess heat is the world’s largest untapped source of energy indicating that in the EU alone, excess heat amounts to 2,860 TWh/y, almost corresponding to the EU’s total energy demand for heat and hot water in residential and service sector buildings. Much of this excess heat could instead be captured and reused.		In February 2023 the [https://amp.theguardian.com/environment/2023/feb/23/recapturing-excess-heat-could-power-most-of-europe-say-experts Guardian reported] on the report published by [https://www.whyenergyefficiency.com/solutions/allsolutions/the-worlds-largest-untapped-energy-source-excess-heat?utm_source=pressrelease&utm_medium=generic&utm_campaign=cf_whitepaperexcessheat#the_solutions_exist Danfoss noted in their heat excess whitepaper] that excess heat is the world’s largest untapped source of energy indicating that in the EU alone, excess heat amounts to 2,860 TWh/y, almost corresponding to the EU’s total energy demand for heat and hot water in residential and service sector buildings. Much of this excess heat could instead be captured and reused.
		+
		+	NB Approved document F: Volume 1: Dwellings, 2021 edition, defines heat recovery as: ‘Applied to mechanical supply and extract systems or a single room ventilator, extract air is passed over a heat exchanger and the recovered heat is put into the supply air.’

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Editor at 16:17, 1 March 2023

2023-03-01T16:17:17Z

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	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].

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

Editor at 16:16, 1 March 2023

2023-03-01T16:16:50Z

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	This 'waste' heat can be recovered and re-used for applications such as; heating water, pre-heating fresh air for building ventilation systems, drying processes, power generation, pre-heating combustion air for furnaces, boilers and so on.		This 'waste' heat can be recovered and re-used for applications such as; heating water, pre-heating fresh air for building ventilation systems, drying processes, power generation, pre-heating combustion air for furnaces, boilers and so on.

−	~~Methods for~~ heat recovery include:	+	Heat recovery refers to the process of capturing and reusing waste heat that is generated from industrial or commercial processes. There are several types of heat recovery which include;

−	* ~~Gas (or vapour)~~ to ~~liquid~~ heat ~~exchange~~.	+	* Air-to-air heat recovery is a type of heat recovery involves exchanging heat between two separate air streams, such as ventilation air and exhaust air as in MVHR systems.
−	* Air-to-air heat ~~heat exchange~~.	+	* Air-to-air mixing direct ducting of waste hot air in to other areas to use the heat perhaps through filters.
−	* Liquid-to-liquid heat ~~exchange~~.	+	* Liquid-to-liquid (water-to-water) heat recovery is a type of heat recovery involves exchanging heat between two separate waterstreams, such as hot water and cold water, commonly used in manufacturing plants.
−	* ~~Direct ducting~~ of ~~hot~~ air.	+	* Refrigerant-to-air heat recovery is a type of heat recovery involves capturing waste heat from a refrigeration system and using it to preheat incoming air, commonly used in HVAC plant and can improve energy efficiency.
−	* ~~Use~~ of steam power ~~blowdown~~.	+	* Steam-to-steam heat recovery is a type of heat recovery involves exchanging heat between two separate steam streams, such as high-pressure steam and low-pressure steam often used in power plants and industrial processes.
−	* ~~Heat~~ captured ~~during~~ phase change.	+	* Exhaust gas heat recovery is a type of heat recovery involves capturing waste heat from exhaust gases and using it to generate steam or hot water, commonly used in boilers and furnaces.
−	* ~~Heat~~ recovery ~~from condensers~~.	+	* Waste heat recovery from engines is a type of heat recovery that captures waste heat from engines and uses it to generate electricity or to preheat incoming air or fuel, common in condensers, power plants and industrial processes.
		+	* Solid to solid heat recovery may refer to chemical heat that is captured by phase change materials and released again on phase change. It may be a form of heat recovery if the heat used to change phases initially was waste heat
		+	* Phase heat recovery may refer to chemical heat that is captured by phase change materials and released again on phase change. It may be a form of heat recovery if the heat used to change phases initially was waste heat.
		+	* Solids in heat recovery might be referred to a regenerative, as this is where waste heat with in air or water heats a solid as it passes, the solid material retains that heat and acts in a similar way to a battery, releasing it as a fresh elements comes in contact with it, such as single room ventilators.

	The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.		The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.
		+
		+	In February 2023 the [https://amp.theguardian.com/environment/2023/feb/23/recapturing-excess-heat-could-power-most-of-europe-say-experts Guardian reported] on the report published by [https://www.whyenergyefficiency.com/solutions/allsolutions/the-worlds-largest-untapped-energy-source-excess-heat?utm_source=pressrelease&utm_medium=generic&utm_campaign=cf_whitepaperexcessheat#the_solutions_exist Danfoss noted in their heat excess whitepaper] that excess heat is the world’s largest untapped source of energy indicating that in the EU alone, excess heat amounts to 2,860 TWh/y, almost corresponding to the EU’s total energy demand for heat and hot water in residential and service sector buildings. Much of this excess heat could instead be captured and reused.

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =
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	* Tempering heating.		* Tempering heating.
	* Types of heating system.		* Types of heating system.
		+	* Types of heat exchanger.
	* Variable refrigerant flow.		* Variable refrigerant flow.
	* Waste heat.		* Waste heat.

Editor at 11:47, 4 November 2021

2021-11-04T11:47:25Z

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	The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.		The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.

−	= Related articles on Designing Buildings ~~Wiki.~~ =	+	= Related articles on Designing Buildings =

	* Air conditioning.		* Air conditioning.
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	* HVAC.		* HVAC.
	* Mechanical ventilation.		* Mechanical ventilation.
		+	* Mechanical ventilation's role in improving indoor air quality.
	* Refrigerants.		* Refrigerants.
	* Tempering heating.		* Tempering heating.

Designing Buildings at 09:40, 15 October 2020

2020-10-15T09:40:50Z

← Older revision		Revision as of 09:40, 15 October 2020
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	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].

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

Designing Buildings at 11:34, 16 June 2020

2020-06-16T11:34:00Z

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−	Heat recovery is the process of collecting and re-using heat that is generated from any process where the heat would otherwise be lost (ref. ~~[http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf~~ The Carbon Trust, 2011]). This can help reduce the energy consumption of the process or the heat can be used elsewhere, reducing running costs and carbon emissions.	+	Heat recovery is the process of collecting and re-using heat that is generated from any process where the heat would otherwise be lost (ref. The Carbon Trust, 2011). This can help reduce the energy consumption of the process or the heat can be used elsewhere, reducing running costs and carbon emissions.

	Heat recovery devices can be used in most buildings since the majority use energy for heating, cooling, ventilation or some may house industrial processes that generate heat.		Heat recovery devices can be used in most buildings since the majority use energy for heating, cooling, ventilation or some may house industrial processes that generate heat.
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	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].

−	[[Category:Articles_needing_more_work]] [[Category:Sustainability]] [[Category:Design]] [[Category:Products_/_components]]	+	[[Category:Articles_needing_more_work]] [[Category:Sustainability]] [[Category:Design]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 11:33, 16 June 2020

2020-06-16T11:33:39Z

← Older revision		Revision as of 11:33, 16 June 2020
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	* [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf Heat recovery: A guide to key systems and applications].		* [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf Heat recovery: A guide to key systems and applications].
−	* ~~[http://www.carbontrust.com/media/147119/j7948_ctl030_how_to_implement_hvac_heat_recovery_aw.pdf~~ How to implement heat recovery in heating, air conditioning and ventilation systems.]	+	* Carbon Trust, How to implement heat recovery in heating, air conditioning and ventilation systems.
	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/190149/16_04-DECC-The_Future_of_Heating_Accessible-10.pdf The Future of Heating: Meeting the Challenge].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/190149/16_04-DECC-The_Future_of_Heating_Accessible-10.pdf The Future of Heating: Meeting the Challenge].
	* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].		* [https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294900/element_energy_et_al_potential_for_recovering_and_using_surplus_heat_from_industry.pdf The potential for recovering and using surplus heat from industry].

	[[Category:Articles_needing_more_work]] [[Category:Sustainability]] [[Category:Design]] [[Category:Products_/_components]]		[[Category:Articles_needing_more_work]] [[Category:Sustainability]] [[Category:Design]] [[Category:Products_/_components]]

Editor at 18:03, 26 May 2020

2020-05-26T18:03:27Z

← Older revision		Revision as of 18:03, 26 May 2020
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	* Mechanical ventilation.		* Mechanical ventilation.
	* Refrigerants.		* Refrigerants.
		+	* Tempering heating.
	* Types of heating system.		* Types of heating system.
	* Variable refrigerant flow.		* Variable refrigerant flow.

Designing Buildings at 13:16, 15 August 2019

2019-08-15T13:16:21Z

← Older revision		Revision as of 13:16, 15 August 2019
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−	~~To help develop this article, click ‘Edit this article’ above.~~
−
−	~~-----~~
	Heat recovery is the process of collecting and re-using heat that is generated from any process where the heat would otherwise be lost (ref. [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf The Carbon Trust, 2011]). This can help reduce the energy consumption of the process or the heat can be used elsewhere, reducing running costs and carbon emissions.		Heat recovery is the process of collecting and re-using heat that is generated from any process where the heat would otherwise be lost (ref. [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf The Carbon Trust, 2011]). This can help reduce the energy consumption of the process or the heat can be used elsewhere, reducing running costs and carbon emissions.

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	* Heat pump.		* Heat pump.
	* Heat recovery ventilation.		* Heat recovery ventilation.
		+	* Heat source.
	* Heating.		* Heating.
	* HVAC.		* HVAC.

Editor at 14:51, 31 July 2019

2019-07-31T14:51:44Z

← Older revision		Revision as of 14:51, 31 July 2019
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	The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.		The government document [https://www.gov.uk/government/publications/the-future-of-heating-meeting-the-challenge The Future of Heating: Meeting the Challenge] (March 2013) highlighted the potential of heat recovery for helping reduce UK carbon emissions. In June 2013, a more detailed study was commissioned which found a total of 48 terrawatt-hours (TWh) per year of industrial waste heat across eight energy intensive industries; oil refining, iron and steel, food and drink, pulp and paper, chemical, glass, cement and ceramics. It identified 11 TWh/yr with technical potential and 8 TWh/yr with economic potential. The study identified commercially viable heat recovery for all eight industries.

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

	* Air conditioning.		* Air conditioning.
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	* Types of heating system.		* Types of heating system.
	* Variable refrigerant flow.		* Variable refrigerant flow.
		+	* Waste heat.
	* Zero Bills Home.		* Zero Bills Home.

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

	* [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf Heat recovery: A guide to key systems and applications].		* [http://www.carbontrust.com/media/31715/ctg057_heat_recovery.pdf Heat recovery: A guide to key systems and applications].