Water source heat pumps - Revision history

Editor at 17:06, 30 December 2021

2021-12-30T17:06:37Z

← Older revision		Revision as of 17:06, 30 December 2021
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	Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.		Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.

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

	* Absorption heat pump.		* Absorption heat pump.
Line 36:		Line 36:
	* Ground source heat pumps		* Ground source heat pumps
	* Heat pump.		* Heat pump.
		+	* Hybrid heat pump electric panel heating.
	* Mechanical ventilation with heat recovery.		* Mechanical ventilation with heat recovery.
	* 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.

Designing Buildings at 08:50, 5 July 2021

2021-07-05T08:50:04Z

← Older revision		Revision as of 08:50, 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.
	* Renewable Heat Incentive.		* Renewable Heat Incentive.
		+	* Room-based heat pumps.
	* Solar-assisted heat pump.		* Solar-assisted heat pump.
	* Solar thermal heating.		* Solar thermal heating.

Designing Buildings at 08:16, 22 September 2020

2020-09-22T08:16:55Z

← Older revision		Revision as of 08:16, 22 September 2020
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	* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.		* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.

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

Editor at 13:54, 13 May 2020

2020-05-13T13:54:57Z

← Older revision		Revision as of 13:54, 13 May 2020
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	* Air source heat pumps.		* Air source heat pumps.
	* BSRIA domestic hot water heat pumps testing.		* BSRIA domestic hot water heat pumps testing.
		+	* BSRIA global heat pump market 2019.
	* Coefficient of Performance CoP.		* Coefficient of Performance CoP.
	* Exhaust air heat pump.		* Exhaust air heat pump.
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	* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.		* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.

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

Designing Buildings at 09:13, 11 May 2019

2019-05-11T09:13:32Z

← Older revision		Revision as of 09:13, 11 May 2019
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	Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.		Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.

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

	* Absorption heat pump.		* Absorption heat pump.
	* Air source heat pumps.		* Air source heat pumps.
		+	* BSRIA domestic hot water heat pumps testing.
	* Coefficient of Performance CoP.		* Coefficient of Performance CoP.
	* Exhaust air heat pump.		* Exhaust air heat pump.
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	* Water source heat map.		* Water source heat map.

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

	* YouGen, [http://www.yougen.co.uk/renewable-energy/Heat+Pumps/ Heat pumps].		* YouGen, [http://www.yougen.co.uk/renewable-energy/Heat+Pumps/ Heat pumps].

Designing Buildings at 14:20, 29 March 2019

2019-03-29T14:20:41Z

← Older revision		Revision as of 14:20, 29 March 2019
Line 50:		Line 50:
	* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.		* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.

−	[[Category:Sustainability]] [[Category:Products_/_components]]	+	[[Category:Water]] [[Category:Sustainability]] [[Category:Products_/_components]]

Designing Buildings at 10:14, 18 August 2018

2018-08-18T10:14:57Z

← Older revision		Revision as of 10:14, 18 August 2018
Line 37:		Line 37:
	* Heat pump.		* Heat pump.
	* Mechanical ventilation with heat recovery.		* Mechanical ventilation with heat recovery.
		+	* Renewable energy sources: how they work and what they deliver: Part 3: Electrically driven heat pumps DG 532 3.
	* Renewable Heat Incentive.		* Renewable Heat Incentive.
	* Solar-assisted heat pump.		* Solar-assisted heat pump.

Editor at 10:35, 22 December 2017

2017-12-22T10:35:12Z

← Older revision		Revision as of 10:35, 22 December 2017
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−	Heat pumps work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through a heat source, such as the outside air, the ground, or circulating water. The fluid ‘absorbs’ this heat and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The resulting 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.	+	Heat pumps work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through a heat source, such as the outside air, the ground, or circulating water.
		+
		+	The fluid ‘absorbs’ this heat and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The resulting 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.

	Heat pumps can be used to provide hot water, space heating (either by providing hot water for under-floor heating or radiators, or supplying hot air) or other applications such as heating swimming pools.		Heat pumps can be used to provide hot water, space heating (either by providing hot water for under-floor heating or radiators, or supplying hot air) or other applications such as heating swimming pools.
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	In the UK, heat pumps are most commonly air-source or ground-source heat pumps. However, the temperature of ground water sources in the UK tends to be fairly constant for most of the year, at between 8 and 12°c. This makes water a more efficient heat source than the outside air, and the heat transfer rate with water is higher than that of air or the ground. In addition, unlike ground-source heat pumps, water-source heat pumps do not require trenches for coils to be laid in, although open loop systems often require filtration.		In the UK, heat pumps are most commonly air-source or ground-source heat pumps. However, the temperature of ground water sources in the UK tends to be fairly constant for most of the year, at between 8 and 12°c. This makes water a more efficient heat source than the outside air, and the heat transfer rate with water is higher than that of air or the ground. In addition, unlike ground-source heat pumps, water-source heat pumps do not require trenches for coils to be laid in, although open loop systems often require filtration.

−	Water-source heat pumps require a suitable local water source, such as a lake, river, well, borehole and so on. They can be ‘open-loop’ or ‘closed-loop’ systems:	+	Water-source heat pumps require a suitable local water source, such as a lake, river, well, borehole, and so on. They can be ‘open-loop’ or ‘closed-loop’ systems:
		+
		+	Closed-loop systems pipe a mixture of water and anti-freeze to a water source such as a lake where it flows through coils or heat exchange panels in the water to exchange heat with it. The heated mixture is then piped to the heat pump and heat exchanged with the refrigerant.

−	* Closed-loop systems pipe a mixture of water and anti-freeze to a water source such as a lake where it flows through coils or heat exchange panels in the water to exchange heat with it. The heated mixture is then piped to the heat pump and heat exchanged with the refrigerant.	+	In open-loop systems, water from the source is extracted and piped direct to the heat pump. Heat is then exchanged with the refrigerant and the water then returned to the source. As this involves extraction from and discharge to a water source, it is likely to require an extraction licence and a discharge license from the Environment Agency.
−	* In open-loop systems water from the source is extracted and piped direct to the heat pump. Heat is then exchanged with the refrigerant and the water then returned to the source. As this involves extraction from and discharge to a water source, it is likely to require an extraction licence and a discharge license from the Environment Agency.	+

	Closed-loop systems can be less efficient than open-loop systems, because of the losses caused by transferring heat between the water source and the fluid in the closed loop. However, they are less restrictive in terms of the danger of freezing, the water quality that can be used, the need for filtration or other forms of water treatment, the possibility of needing to use a corrosion resistant system and the need for licenses. Open-loop systems can also require more pumping.		Closed-loop systems can be less efficient than open-loop systems, because of the losses caused by transferring heat between the water source and the fluid in the closed loop. However, they are less restrictive in terms of the danger of freezing, the water quality that can be used, the need for filtration or other forms of water treatment, the possibility of needing to use a corrosion resistant system and the need for licenses. Open-loop systems can also require more pumping.
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	* Mechanical ventilation with heat recovery.		* Mechanical ventilation with heat recovery.
	* Renewable Heat Incentive.		* Renewable Heat Incentive.
		+	* Solar-assisted heat pump.
	* Solar thermal heating.		* Solar thermal heating.
	* Thermal labyrinths.		* Thermal labyrinths.

Editor at 12:11, 16 September 2016

2016-09-16T12:11:07Z

← Older revision		Revision as of 12:11, 16 September 2016
Line 1:		Line 1:
−
	Heat pumps work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through a heat source, such as the outside air, the ground, or circulating water. The fluid ‘absorbs’ this heat and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The resulting 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.		Heat pumps work by running a low-temperature, lower pressure refrigerant fluid in heat exchanger coils through a heat source, such as the outside air, the ground, or circulating water. The fluid ‘absorbs’ this heat and boils, even at temperatures below 0° C (although the coefficient of performance (COP) decreases with lower temperature). The resulting 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.

Line 7:		Line 6:

	Water-source heat pumps require a suitable local water source, such as a lake, river, well, borehole and so on. They can be ‘open-loop’ or ‘closed-loop’ systems:		Water-source heat pumps require a suitable local water source, such as a lake, river, well, borehole and so on. They can be ‘open-loop’ or ‘closed-loop’ systems:
−	*Closed-loop systems pipe a mixture of water and anti-freeze to a water source such as a lake where it flows through coils or heat exchange panels in the water to exchange heat with it. The heated mixture is then piped to the heat pump and heat exchanged with the refrigerant.	+
−	*In open-loop systems water from the source is extracted and piped direct to the heat pump. Heat is then exchanged with the refrigerant and the water then returned to the source. As this involves extraction from and discharge to a water source, it is likely to require an extraction licence and a discharge license from the Environment Agency.	+	* Closed-loop systems pipe a mixture of water and anti-freeze to a water source such as a lake where it flows through coils or heat exchange panels in the water to exchange heat with it. The heated mixture is then piped to the heat pump and heat exchanged with the refrigerant.
		+	* In open-loop systems water from the source is extracted and piped direct to the heat pump. Heat is then exchanged with the refrigerant and the water then returned to the source. As this involves extraction from and discharge to a water source, it is likely to require an extraction licence and a discharge license from the Environment Agency.

	Closed-loop systems can be less efficient than open-loop systems, because of the losses caused by transferring heat between the water source and the fluid in the closed loop. However, they are less restrictive in terms of the danger of freezing, the water quality that can be used, the need for filtration or other forms of water treatment, the possibility of needing to use a corrosion resistant system and the need for licenses. Open-loop systems can also require more pumping.		Closed-loop systems can be less efficient than open-loop systems, because of the losses caused by transferring heat between the water source and the fluid in the closed loop. However, they are less restrictive in terms of the danger of freezing, the water quality that can be used, the need for filtration or other forms of water treatment, the possibility of needing to use a corrosion resistant system and the need for licenses. Open-loop systems can also require more pumping.
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	Water source heat pumps are generally quiet, unobtrusive and have low maintenance requirements. However, care must be taken to ensure that the water supply is consistent and sufficient throughout the year.		Water source heat pumps are generally quiet, unobtrusive and have low maintenance requirements. However, care must be taken to ensure that the water supply is consistent and sufficient throughout the year.

−	Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.~~<br/>~~	+	Water-source heat pumps are eligible for payments under the government’s Renewable Heat Incentive (RHI) scheme. Domestic schemes may also be eligible for financing through the green deal, however, there has been very poor uptake of the Green Deal, and it is generally considered that better financial deals are available elsewhere.

	= Find out more =		= Find out more =

	=== Related articles on Designing Buildings Wiki: ===		=== Related articles on Designing Buildings Wiki: ===
−	*Absorption heat pump.	+
−	*Air source heat pumps.	+	* Absorption heat pump.
−	*Exhaust air heat pump.	+	* Air source heat pumps.
−	*Geothermal pile foundations.	+	* Coefficient of Performance CoP.
−	*Green Deal.	+	* Exhaust air heat pump.
−	*Ground energy options.	+	* Geothermal pile foundations.
−	*Ground source heat pumps	+	* Green Deal.
−	*Heat pump.	+	* Ground energy options.
−	*Mechanical ventilation with heat recovery.	+	* Ground source heat pumps
−	*Renewable Heat Incentive.	+	* Heat pump.
−	*Solar thermal heating.	+	* Mechanical ventilation with heat recovery.
−	*Thermal labyrinths.	+	* Renewable Heat Incentive.
−	*Water source heat map.	+	* Solar thermal heating.
		+	* Thermal labyrinths.
		+	* Water source heat map.

	=== External references ===		=== External references ===
−	*YouGen, [http://www.yougen.co.uk/renewable-energy/Heat+Pumps/ Heat pumps].
−	*DECC, Green Deal, Energy Saving Home Improvements.
−	*DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.

−	[[Category:Sustainability]]	+	* YouGen, [http://www.yougen.co.uk/renewable-energy/Heat+Pumps/ Heat pumps].
−	[[Category:Products_/_components]]	+	* DECC, Green Deal, Energy Saving Home Improvements.
		+	* DECC,Which energy efficiency improvements qualify for Green Deal Finance? June 2012.
		+
		+	[[Category:Sustainability]] [[Category:Products_/_components]]

Designing Buildings at 10:21, 17 November 2015

2015-11-17T10:21:36Z

← Older revision		Revision as of 10:21, 17 November 2015
Line 23:		Line 23:
	*Absorption heat pump.		*Absorption heat pump.
	*Air source heat pumps.		*Air source heat pumps.
		+	*Exhaust air heat pump.
	*Geothermal pile foundations.		*Geothermal pile foundations.
	*Green Deal.		*Green Deal.
Line 28:		Line 29:
	*Ground source heat pumps		*Ground source heat pumps
	*Heat pump.		*Heat pump.
		+	*Mechanical ventilation with heat recovery.
	*Renewable Heat Incentive.		*Renewable Heat Incentive.
	*Solar thermal heating.		*Solar thermal heating.