Coefficient of Performance CoP - Revision history

Designing Buildings at 08:04, 22 March 2022

2022-03-22T08:04:15Z

← Older revision		Revision as of 08:04, 22 March 2022
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	* W is the work consumed by the refrigerator.		* W is the work consumed by the refrigerator.

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

	* Absorption heat pump.		* Absorption heat pump.
Line 54:		Line 54:
	* Types of domestic boiler.		* Types of domestic boiler.
	* Underfloor heating.		* Underfloor heating.
		+	* What is COP and EER?
	* Water source heat pumps.		* Water source heat pumps.

Designing Buildings at 09:00, 6 November 2020

2020-11-06T09:00:40Z

← Older revision		Revision as of 09:00, 6 November 2020
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	* [https://www.gov.scot/publications/building-standards-list-of-guidance/pages/key-supporting-technical-guidance/ Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1], published by the Scottish Government, Building Standards Division in April 2018.		* [https://www.gov.scot/publications/building-standards-list-of-guidance/pages/key-supporting-technical-guidance/ Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1], published by the Scottish Government, Building Standards Division in April 2018.

−	[[Category:~~Standards_/_measurements~~]] [[Category:~~DCN_Standard~~]] [[Category:~~Sustainability~~]] [[Category:~~Products_~~/~~_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Products_/_components]]

Designing Buildings at 08:51, 25 August 2020

2020-08-25T08:51:37Z

← Older revision		Revision as of 08:51, 25 August 2020
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	* Heat recovery.		* Heat recovery.
	* Residential heat pump installations: the role of vocational education and training.		* Residential heat pump installations: the role of vocational education and training.
		+	* Seasonal performance factor.
	* Solar thermal heating.		* Solar thermal heating.
	* Types of domestic boiler.		* Types of domestic boiler.
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	* [https://www.gov.scot/publications/building-standards-list-of-guidance/pages/key-supporting-technical-guidance/ Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1], published by the Scottish Government, Building Standards Division in April 2018.		* [https://www.gov.scot/publications/building-standards-list-of-guidance/pages/key-supporting-technical-guidance/ Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1], published by the Scottish Government, Building Standards Division in April 2018.

−	[[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Products_/_components]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]] [[Category:Sustainability]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 08:48, 25 August 2020

2020-08-25T08:48:10Z

← Older revision		Revision as of 08:48, 25 August 2020
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	* W is the work consumed by the refrigerator.		* W is the work consumed by the refrigerator.

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

	* Absorption heat pump.		* Absorption heat pump.
Line 57:		Line 55:
	* Water source heat pumps.		* Water source heat pumps.

−	=== External resources ===	+	= External resources =

	* Hyperphysics - [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatpump.html Heat pump]		* Hyperphysics - [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatpump.html Heat pump]
		+	* [https://www.gov.scot/publications/building-standards-list-of-guidance/pages/key-supporting-technical-guidance/ Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1], published by the Scottish Government, Building Standards Division in April 2018.

	[[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Products_/_components]]		[[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Products_/_components]]

Designing Buildings at 08:00, 11 November 2016

2016-11-11T08:00:21Z

← Older revision		Revision as of 08:00, 11 November 2016
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	The CoP of a ground source heat pump is usually high because of the 'free' heat energy available from the ground through a series of buried pipes. Air source heat pumps draw in air from outside the building, and so the CoP can vary seasonally. In winter, the outside air is much colder so more electricity is required to raise the heat as required. The CoP will usually be relatively low, at around 2.5. In summer, the external air temperature is much warmer so less electricity is required, often resulting in a CoP of 4 or more.		The CoP of a ground source heat pump is usually high because of the 'free' heat energy available from the ground through a series of buried pipes. Air source heat pumps draw in air from outside the building, and so the CoP can vary seasonally. In winter, the outside air is much colder so more electricity is required to raise the heat as required. The CoP will usually be relatively low, at around 2.5. In summer, the external air temperature is much warmer so less electricity is required, often resulting in a CoP of 4 or more.

−	The Seasonal Energy Efficiency Ratio (SEER) value in cooling, and the Seasonal Coefficient of Performance (~~SCoP~~) value in heating give an indication of anticipated real-life performance that takes into consideration these changes in energy efficiency over the course of a year.	+	The Seasonal Energy Efficiency Ratio (SEER) value in cooling, and the Seasonal Coefficient of Performance (SCOP) value in heating give an indication of anticipated real-life performance that takes into consideration these changes in energy efficiency over the course of a year.
		+
		+	SCOP is measured in accordance with the procedures in BS EN 14825:2013. The National Calculation Methodology for calculating carbon dioxide emission rates from buildings uses SCOP.

	Refrigerators work by extracting heat rather than exhausting it. In this case, the equation is expressed as:		Refrigerators work by extracting heat rather than exhausting it. In this case, the equation is expressed as:

86.173.158.197 at 15:13, 16 September 2016

2016-09-16T15:13:06Z

← Older revision		Revision as of 15:13, 16 September 2016
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−	The Coefficient of Performance (CoP) is a ratio that describes the efficiency of a ~~technology~~. It is based on the relationship between the power (kW) input to a system compared to the amount of power that is output.	+	The Coefficient of Performance (CoP) is a ratio that describes the efficiency of a system. It is based on the relationship between the power (kW) input to a system compared to the amount of power that is output.

	CoP = power output / power input.		CoP = power output / power input.
Line 5:		Line 5:
	The higher the number, the more efficient the system.		The higher the number, the more efficient the system.

−	In the construction industry, the term CoP is often used in relation to heat pumps. Heat pumps transfer heat from a lower temperature source to one of a higher temperature and 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.	+	In the construction industry, the term CoP is often used in relation to equipment such as heat pumps. Heat pumps transfer heat from a lower temperature source to one of a higher temperature and can be used to provide hot water, space heating, or for other applications such as heating swimming pools.

−	In ~~this~~ case the CoP is the relationship between the power that is drawn from the heat pump as cooling or heat, and the power that is consumed.	+	In the case of heat pumps, the CoP is the relationship between the power that is drawn from the heat pump as cooling or heat, and the power that is consumed by it.

	The equation is expressed as follows:		The equation is expressed as follows:
Line 18:		Line 18:
	* W is the work consumed by the heat pump.		* W is the work consumed by the heat pump.

−	Refrigerators work by extracting heat rather than exhausting it. ~~The~~ equation is expressed as ~~follows~~:	+	Typically a simple electric heater with no moving parts may convert 1 kW of electricity into 1 kW of heat, giving it a COP of 1. Whereas, a heat pump may convert 1 kW of electricity in 3 or 4 kW of heat, giving it a CoP of 3 or 4.
		+
		+	Rather than being generated by the pump, the heat is being moved from outside the structure to inside. The warmer the external heat source, the higher the CoP, and the less electricity required to convert it to heat output. This has advantages for the user over traditional heating systems as it significantly reduces carbon emissions and results in lower operating costs.
		+
		+	The CoP of a ground source heat pump is usually high because of the 'free' heat energy available from the ground through a series of buried pipes. Air source heat pumps draw in air from outside the building, and so the CoP can vary seasonally. In winter, the outside air is much colder so more electricity is required to raise the heat as required. The CoP will usually be relatively low, at around 2.5. In summer, the external air temperature is much warmer so less electricity is required, often resulting in a CoP of 4 or more.
		+
		+	The Seasonal Energy Efficiency Ratio (SEER) value in cooling, and the Seasonal Coefficient of Performance (SCoP) value in heating give an indication of anticipated real-life performance that takes into consideration these changes in energy efficiency over the course of a year.
		+
		+	Refrigerators work by extracting heat rather than exhausting it. In this case, the equation is expressed as:

	CoP = Qc/W		CoP = Qc/W
Line 26:		Line 34:
	* Qc is the heat extracted.		* Qc is the heat extracted.
	* W is the work consumed by the refrigerator.		* W is the work consumed by the refrigerator.
−
−	Heat pumps work by using electricity to move heat from a cold to a hot reservoir in an efficient way. An electric heater or boiler converts 1 kW of electricity into 1 kW of heat, giving it a COP of 1. Whereas, a heat pump converts 1 kW of electricity in 3 or 4 kW of heat, giving it a CoP of 3 or 4.
−
−	Rather than being generated by the pump, the heat is being moved from outside the structure to inside. The warmer the external heat source, the higher the CoP, and the less electricity required to convert it to heat output. This has advantages for the user over traditional heating systems as it significantly reduces carbon emissions and results in lower operating costs.
−
−	The CoP of a ground source heat pump is usually high due to the free heat energy used from the ground through a series of buried pipes. Air source heat pumps draw in air from outside the building. The CoP of air source heat pump types can vary seasonally.
−
−	In winter, the outside air is much colder so more electricity is required to raise the heat as required. The CoP will usually be relatively low, at around 2.5. In summer, the external air temperature is much warmer so less electricity is required, often resulting in a CoP of 4 or more.
−
−	~~Since the ground temperature does not vary as much as the air temperature over the year, the CoP of ground source heat pumps will usually be relatively consistent.~~
−
−	The Seasonal Energy Efficiency Ratio (SEER) value in cooling, and the Seasonal Coefficient of Performance (SCoP) value in heating, aims to give an indication of anticipated real-life performance that takes into consideration these changes in energy efficiency over the course of a year.

	= Find out more =		= Find out more =

86.173.158.197 at 14:37, 16 September 2016

2016-09-16T14:37:23Z

← Older revision		Revision as of 14:37, 16 September 2016
Line 1:		Line 1:
−	The Coefficient of Performance (CoP) is a ratio that ~~demonstrates~~ the efficiency of a technology. ~~The ratio defines~~ the relationship between the power (kW) that is drawn from the heat pump as cooling or heat, and the power ~~(kW)~~ that is consumed.	+	The Coefficient of Performance (CoP) is a ratio that describes the efficiency of a technology. It is based on the relationship between the power (kW) input to a system compared to the amount of power that is output.
		+
		+	CoP = power output / power input.
		+
		+	The higher the number, the more efficient the system.
		+
		+	In the construction industry, the term CoP is often used in relation to heat pumps. Heat pumps transfer heat from a lower temperature source to one of a higher temperature and 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.
		+
		+	In this case the CoP is the relationship between the power that is drawn from the heat pump as cooling or heat, and the power that is consumed.

	The equation is expressed as follows:		The equation is expressed as follows:

Editor: Created page with "The Coefficient of Performance (CoP) is a ratio that demonstrates the efficiency of a technology. The ratio defines the relationship between the power (kW) that is drawn from the..."

2016-09-16T12:05:06Z

Created page with "The Coefficient of Performance (CoP) is a ratio that demonstrates the efficiency of a technology. The ratio defines the relationship between the power (kW) that is drawn from the..."

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The Coefficient of Performance (CoP) is a ratio that demonstrates the efficiency of a technology. The ratio defines the relationship between the power (kW) that is drawn from the heat pump as cooling or heat, and the power (kW) that is consumed.

The equation is expressed as follows:

CoP = Q/W

Where:

* Q is the heat supplied to or removed from the reservoir.
* W is the work consumed by the heat pump.

Refrigerators work by extracting heat rather than exhausting it. The equation is expressed as follows:

CoP = Qc/W

Where:

* Qc is the heat extracted.
* W is the work consumed by the refrigerator.

Heat pumps work by using electricity to move heat from a cold to a hot reservoir in an efficient way. An electric heater or boiler converts 1 kW of electricity into 1 kW of heat, giving it a COP of 1. Whereas, a heat pump converts 1 kW of electricity in 3 or 4 kW of heat, giving it a CoP of 3 or 4.

Rather than being generated by the pump, the heat is being moved from outside the structure to inside. The warmer the external heat source, the higher the CoP, and the less electricity required to convert it to heat output. This has advantages for the user over traditional heating systems as it significantly reduces carbon emissions and results in lower operating costs.

The CoP of a ground source heat pump is usually high due to the free heat energy used from the ground through a series of buried pipes. Air source heat pumps draw in air from outside the building. The CoP of air source heat pump types can vary seasonally.

In winter, the outside air is much colder so more electricity is required to raise the heat as required. The CoP will usually be relatively low, at around 2.5. In summer, the external air temperature is much warmer so less electricity is required, often resulting in a CoP of 4 or more.

Since the ground temperature does not vary as much as the air temperature over the year, the CoP of ground source heat pumps will usually be relatively consistent.

The Seasonal Energy Efficiency Ratio (SEER) value in cooling, and the Seasonal Coefficient of Performance (SCoP) value in heating, aims to give an indication of anticipated real-life performance that takes into consideration these changes in energy efficiency over the course of a year.

= Find out more =

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

* Absorption heat pump.
* Air source heat pumps.
* Combined heat and power CHP.
* Domestic heat pumps and the electricity supply system.
* Earth-to-air heat exchangers.
* Exhaust air heat pump.
* Ground source heat pumps.
* Heat exchanger.
* Heat pump.
* Heat recovery.
* Residential heat pump installations: the role of vocational education and training.
* Solar thermal heating.
* Types of domestic boiler.
* Underfloor heating.
* Water source heat pumps.

=== External resources ===

* Hyperphysics - [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatpump.html Heat pump]

[[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Products_/_components]]