DC electricity networks - Revision history

86.179.106.111 at 21:06, 18 December 2021

2021-12-18T21:06:18Z

← Older revision		Revision as of 21:06, 18 December 2021
Line 15:		Line 15:
	High power home appliances (such as freezers, washing machines, dishwashers, kettles, toasters, blenders etc.) still use AC without transformation. But more powerful and efficient DC motors are being developed, and DC fridge-freezers already exist.		High power home appliances (such as freezers, washing machines, dishwashers, kettles, toasters, blenders etc.) still use AC without transformation. But more powerful and efficient DC motors are being developed, and DC fridge-freezers already exist.

−	In 2002, BRE was quite sceptical as to the potential of using DC power from solar panels directly. But the fully DC-powered energetically self-sufficient home may warrant a fresh look. Moshe Kinn wrote an MPhil Thesis at the University of Manchester in 2011 on the topic, which may be a good starting point. [7]	+	In 2002, BRE was quite sceptical as to the potential of using DC power from solar panels directly. But the fully DC-powered energetically self-sufficient home may warrant a fresh look. Moshe Kinn wrote an MPhil Thesis at the University of Manchester in 2011 on the topic, which may be a good starting point. [7] He also did further PHD research that can be further reading.

	A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.		A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.

Designing Buildings at 11:34, 15 December 2021

2021-12-15T11:34:09Z

← Older revision		Revision as of 11:34, 15 December 2021
Line 39:		Line 39:
	* [1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007		* [1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007
	* [2] www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/		* [2] www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/
−	* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:	+	* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings
−	* webarchive.nationalarchives.gov.uk/+/[http://www.berr.gov.uk/files/file17277.pdf http://www.berr.gov.uk/files/file17277.pdf]	+
	* [4] www.solar-facts.com/inverters/inverter-efficiency.php		* [4] www.solar-facts.com/inverters/inverter-efficiency.php
	* [5] siemens		* [5] siemens

Designing Buildings at 07:19, 18 November 2020

2020-11-18T07:19:38Z

← Older revision		Revision as of 07:19, 18 November 2020
Line 40:		Line 40:
	* [2] www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/		* [2] www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/
	* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:		* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:
−	* webarchive.nationalarchives.gov.uk/+/http://www.berr.gov.uk/files/file17277.pdf	+	* webarchive.nationalarchives.gov.uk/+/[http://www.berr.gov.uk/files/file17277.pdf http://www.berr.gov.uk/files/file17277.pdf]
	* [4] www.solar-facts.com/inverters/inverter-efficiency.php		* [4] www.solar-facts.com/inverters/inverter-efficiency.php
	* [5] siemens		* [5] siemens
Line 49:		Line 49:
	--[[User:Mathias\|Mathias]] 00:22, 4 July 2014 (BST)		--[[User:Mathias\|Mathias]] 00:22, 4 July 2014 (BST)

−	[[Category:~~Sustainability~~]] [[Category:~~Construction_techniques~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Designing Buildings at 11:20, 8 July 2020

2020-07-08T11:20:33Z

Editor at 12:43, 17 October 2018

2018-10-17T12:43:20Z

← Older revision		Revision as of 12:43, 17 October 2018
Line 19:		Line 19:
	A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.		A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.

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

		+	* Ampere.
	* Building Research Establishment.		* Building Research Establishment.
	* Electrical drawing.		* Electrical drawing.

Editor at 12:48, 10 August 2018

2018-08-10T12:48:04Z

← Older revision		Revision as of 12:48, 10 August 2018
Line 24:		Line 24:

	* Building Research Establishment.		* Building Research Establishment.
		+	* Electrical drawing.
	* Electrician.		* Electrician.
	* Internet of things.		* Internet of things.

Editor at 18:21, 9 March 2018

2018-03-09T18:21:31Z

← Older revision		Revision as of 18:21, 9 March 2018
Line 24:		Line 24:

	* Building Research Establishment.		* Building Research Establishment.
		+	* Electrician.
	* Internet of things.		* Internet of things.
	* Municipal energy - briefing sheet.		* Municipal energy - briefing sheet.

Editor at 15:37, 19 February 2018

2018-02-19T15:37:11Z

← Older revision		Revision as of 15:37, 19 February 2018
Line 31:		Line 31:
	* Solar thermal panels.		* Solar thermal panels.
	* Solar photovoltaics.		* Solar photovoltaics.
		+	* Switchgear.
	* The Future of Electricity in Domestic Buildings.		* The Future of Electricity in Domestic Buildings.

Designing Buildings at 16:05, 15 February 2018

2018-02-15T16:05:54Z

← Older revision		Revision as of 16:05, 15 February 2018
Line 42:		Line 42:
	* [5] siemens		* [5] siemens
	* [6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):		* [6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):
−	* [http://www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf] The latest available version of the US Environmental Protection Agency’s ~~[http://www.energystar.gov/ia/partners/prod_development/revisions/downloads/International_Efficiency_Marking_Protocol.pdf~~ ENERGY STAR] implementation:	+	* [http://www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf] The latest available version of the US Environmental Protection Agency’s ENERGY STAR implementation:
	* [7] [http://www.dcisthefuture.org/papers/ www.dcisthefuture.org/papers]		* [7] [http://www.dcisthefuture.org/papers/ www.dcisthefuture.org/papers]

Editor at 10:28, 23 February 2017

2017-02-23T10:28:25Z

← Older revision		Revision as of 10:28, 23 February 2017
Line 1:		Line 1:
		+	The Energy Saving Trust estimated in 2007 that by 2020, 45% of the electricity consumption in a household would be “entertainment, computers and gadgets and LED lighting” [1] – all DC-powered (Direct Current).

−	The Energy Saving Trust estimated in 2007 that by 2020, 45% of the electricity consumption in a household would be “entertainment, computers and gadgets and LED lighting” [1] – all DC-powered (Direct Current).<br/>	+	Greg Reed, director of the Power & Energy Initiative at the University of Pittsburgh is quoted in Technology Review saying that “Within the next 20 years we could definitely see as much as 50 percent of our total loads be made up of DC consumption... It’s accelerating even more than we’d expected.” [2]
−		+
−	Greg Reed, director of the Power & Energy Initiative at the University of Pittsburgh is quoted in Technology Review saying that “Within the next 20 years we could definitely see as much as 50 percent of our total loads be made up of DC consumption... It’s accelerating even more than we’d expected.” [2]	+

	Solar panels produce DC power and have to be coupled with an inverter to feed into the mains, costing easily 10-15% of the generated power in the process. [3, 4] So why not use the DC directly in devices that use DC anyway?		Solar panels produce DC power and have to be coupled with an inverter to feed into the mains, costing easily 10-15% of the generated power in the process. [3, 4] So why not use the DC directly in devices that use DC anyway?
Line 20:		Line 19:
	A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.		A big concern is the possible length of cable with higher transmission losses at lower voltages. But if it makes sense for a server farm, it could well make sense for a home.

−	= Find out more~~<br/>~~ =	+	= Find out more =

	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===
−	*Building Research Establishment.	+
−	*Internet of things.	+	* Building Research Establishment.
−	*PV inverter.	+	* Internet of things.
−	*Renewable energy.	+	* Municipal energy - briefing sheet.
−	*Smart buildings.~~<br/>~~	+	* PV inverter.
−	*Solar thermal panels.	+	* Renewable energy.
−	*Solar photovoltaics.~~<br/>~~	+	* Smart buildings.
−	*The Future of Electricity in Domestic Buildings.	+	* Solar thermal panels.
		+	* Solar photovoltaics.
		+	* The Future of Electricity in Domestic Buildings.

	=== External references (all web resources last accessed on 2014-02-21) ===		=== External references (all web resources last accessed on 2014-02-21) ===
−	*[1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007
−	*[2] [http://www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/ www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/]
−	*[3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:
−	*[http://webarchive.nationalarchives.gov.uk/+/http:/www.berr.gov.uk/files/file17277.pdf webarchive.nationalarchives.gov.uk/+/http://www.berr.gov.uk/files/file17277.pdf]
−	*[4] [http://www.solar-facts.com/inverters/inverter-efficiency.php www.solar-facts.com/inverters/inverter-efficiency.php]
−	*[5] siemens
−	*[6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):
−	*[http://www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf] The latest available version of the US Environmental Protection Agency’s [http://www.energystar.gov/ia/partners/prod_development/revisions/downloads/International_Efficiency_Marking_Protocol.pdf ENERGY STAR] implementation:
−	*[7] [http://www.dcisthefuture.org/papers/ www.dcisthefuture.org/papers]

−	--[[User~~%3AMathias~~\|Mathias]] 00:22, 4 July 2014 (BST)	+	* [1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007
		+	* [2] [http://www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/ www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/]
		+	* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:
		+	* [http://webarchive.nationalarchives.gov.uk/+/http:/www.berr.gov.uk/files/file17277.pdf webarchive.nationalarchives.gov.uk/+/http://www.berr.gov.uk/files/file17277.pdf]
		+	* [4] [http://www.solar-facts.com/inverters/inverter-efficiency.php www.solar-facts.com/inverters/inverter-efficiency.php]
		+	* [5] siemens
		+	* [6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):
		+	* [http://www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf] The latest available version of the US Environmental Protection Agency’s [http://www.energystar.gov/ia/partners/prod_development/revisions/downloads/International_Efficiency_Marking_Protocol.pdf ENERGY STAR] implementation:
		+	* [7] [http://www.dcisthefuture.org/papers/ www.dcisthefuture.org/papers]
		+
		+	--[[User:Mathias\|Mathias]] 00:22, 4 July 2014 (BST)

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

← Older revision		Revision as of 11:20, 8 July 2020
Line 35:		Line 35:
	* The Future of Electricity in Domestic Buildings.		* The Future of Electricity in Domestic Buildings.

−	=== External references (all web resources last accessed on 2014-02-21) ===	+	= External references (all web resources last accessed on 2014-02-21) =

	* [1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007		* [1] The ampere strikes back: How consumer electronics are taking over the world, Energy Saving Trust 2007
−	* [2] ~~[http://www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/~~ www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/]	+	* [2] www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/
	* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:		* [3] BRE for DTI 2002: The use of direct current output from PV systems in buildings:
−	* ~~[http://webarchive.nationalarchives.gov.uk/+/http:/www.berr.gov.uk/files/file17277.pdf~~ webarchive.nationalarchives.gov.uk/+/http://www.berr.gov.uk/files/file17277.pdf]	+	* webarchive.nationalarchives.gov.uk/+/http://www.berr.gov.uk/files/file17277.pdf
−	* [4] ~~[http://~~www.solar-facts.com/inverters/inverter-efficiency.php ~~www.solar-facts.com/inverters/inverter-efficiency.php]~~	+	* [4] www.solar-facts.com/inverters/inverter-efficiency.php
	* [5] siemens		* [5] siemens
	* [6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):		* [6] International agreement document from 2005 showing draft implementation timelines, published by the Power Sources Manufacturers Association (PSMA):
−	* ~~[http://~~www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf ~~www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf]~~ The latest available version of the US Environmental Protection Agency’s ENERGY STAR implementation:	+	* www.psma.com/ul_files/forums/energy/July2005EPSInternationalEfficiencyMarkingProtocol_rev2.pdf The latest available version of the US Environmental Protection Agency’s ENERGY STAR implementation:
−	* [7] ~~[http://~~www.dcisthefuture.org/papers~~/ www.dcisthefuture.org/papers]~~	+	* [7] www.dcisthefuture.org/papers

	--[[User:Mathias\|Mathias]] 00:22, 4 July 2014 (BST)		--[[User:Mathias\|Mathias]] 00:22, 4 July 2014 (BST)

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