Solar chimney - Revision history

Editor at 03:14, 22 July 2022

2022-07-22T03:14:00Z

← Older revision		Revision as of 03:14, 22 July 2022
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	* Ventilation.		* Ventilation.
	* Windcatcher.		* Windcatcher.
		+	* Wind cowl.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]

73.173.110.140 at 21:59, 6 February 2022

2022-02-06T21:59:35Z

← Older revision		Revision as of 21:59, 6 February 2022
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	Solar chimneys (or thermal chimneys) are a form of passive climate management building design.		Solar chimneys (or thermal chimneys) are a form of passive climate management building design.

−	Passive climate management design maximises the use of ‘natural’ sources of heating, cooling and ventilation to create comfortable conditions inside buildings. It harness environmental conditions such as solar radiation, cool night air and air pressure differences to drive adjustments to the internal environment's climate. Passive measures do not involve mechanical or electrical systems.	+	Passive climate management design maximises the use of ‘natural’ sources of heating, cooling and ventilation to create comfortable conditions inside buildings. It harness environmental conditions such as solar radiation, cool night air and air pressure differences to drive adjustments to the internal environment's climate. Passive climate management measures do not involve mechanical or electrical systems.

	This is as opposed to ‘active’ climate management design, which makes use of active building services systems to create comfortable interior climate conditions, such as boilers and chillers, mechanical ventilation, electric lighting and so on. Buildings will generally include both active and passive climate management systems.		This is as opposed to ‘active’ climate management design, which makes use of active building services systems to create comfortable interior climate conditions, such as boilers and chillers, mechanical ventilation, electric lighting and so on. Buildings will generally include both active and passive climate management systems.

73.173.110.140 at 21:57, 6 February 2022

2022-02-06T21:57:55Z

← Older revision		Revision as of 21:57, 6 February 2022
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−	Solar chimneys (or thermal chimneys) are a form of passive building design.	+	Solar chimneys (or thermal chimneys) are a form of passive climate management building design.

−	Passive design maximises the use of ‘natural’ sources of heating, cooling and ventilation to create comfortable conditions inside buildings. It harness environmental conditions such as solar radiation, cool night air and air pressure differences to drive the internal environment. Passive measures do not involve mechanical or electrical systems.	+	Passive climate management design maximises the use of ‘natural’ sources of heating, cooling and ventilation to create comfortable conditions inside buildings. It harness environmental conditions such as solar radiation, cool night air and air pressure differences to drive adjustments to the internal environment's climate. Passive measures do not involve mechanical or electrical systems.

−	This is as opposed to ‘active’ design which makes use of active building services systems to create comfortable conditions, such as boilers and chillers, mechanical ventilation, electric lighting and so on. Buildings will generally include both active and passive ~~measures~~.	+	This is as opposed to ‘active’ climate management design, which makes use of active building services systems to create comfortable interior climate conditions, such as boilers and chillers, mechanical ventilation, electric lighting and so on. Buildings will generally include both active and passive climate management systems.

−	Solar chimneys are generally tall, wide structures constructed, facing the sun, with a dark coloured, ~~matt~~ surface designed to absorb solar radiation. As the chimney becomes hot, so it heats the air inside it. The hot air rises up the chimney and is vented out of the top, ~~and in so doing~~ it draws more air in at the bottom of the chimney. This can be used to drive passive ventilation in buildings where cross ventilation or stack ventilation may not be sufficient, and where designers wish to avoid using energy-consuming mechanical ventilation.	+	Solar chimneys are generally tall, wide structures constructed facing the sun, with a dark-coloured, matte surface designed to absorb solar radiation. As the chimney becomes hot, it heats the air inside it. The hot air rises up the chimney and is vented out of the top. As this warmed air rises, it draws more air in at the bottom of the chimney, in a process known as convection. This can be used to drive passive ventilation in buildings where cross ventilation or stack ventilation may not be sufficient, and where designers wish to avoid using energy-consuming mechanical ventilation.

	[[File:Solar_chimney.jpg\|386px\|link=File:Solar_chimney.jpg]]		[[File:Solar_chimney.jpg\|386px\|link=File:Solar_chimney.jpg]]

−	Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep~~. This maximises~~ the surface area that can absorb solar radiation and ~~maximises~~ the surface area in contact with the air inside the chimney.	+	Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep, as these proportions both maximise the surface area that can absorb solar radiation and maximise the surface area in contact with the air inside the chimney.

−	Variations in design ~~can incorporate~~ multiple chambers to further increase surface area and ~~may use~~ materials ~~with high solar absorption~~ such as ~~metal~~ to maximise the temperatures achieved within the chimney. ~~Low~~ emissivity coatings, and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls.	+	Variations in design include incorporating multiple chambers to further increase surface area and/or using materials such as metals that have high temperature conductivity properties to maximise the temperatures achieved within the chimney. Also low emissivity coatings and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls.

	It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces. In cooler conditions, the chimney can be used to direct absorbed heat back into the building by closing it at the top.		It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces. In cooler conditions, the chimney can be used to direct absorbed heat back into the building by closing it at the top.

Editor: Reverted edits by 151.45.125.240 (talk) to last revision by Designing Buildings

2022-01-07T11:44:18Z

Reverted edits by 151.45.125.240 (talk) to last revision by Designing Buildings

Can't load revision 222314

at 11:29, 7 January 2022

2022-01-07T11:29:43Z

Can't load revision 222298

Designing Buildings at 08:30, 5 July 2021

2021-07-05T08:30:31Z

← Older revision		Revision as of 08:30, 5 July 2021
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	* Trombe wall.		* Trombe wall.
	* Types of chimneys.		* Types of chimneys.
		+	* Types of ventilation.
	* Ventilation.		* Ventilation.
	* Windcatcher.		* Windcatcher.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]

Editor at 19:18, 15 January 2021

2021-01-15T19:18:05Z

← Older revision		Revision as of 19:18, 15 January 2021
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	* Thermal storage for cooling.		* Thermal storage for cooling.
	* Trombe wall.		* Trombe wall.
		+	* Types of chimneys.
	* Ventilation.		* Ventilation.
	* Windcatcher.		* Windcatcher.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Products_/_components]]

Designing Buildings at 09:01, 16 September 2020

2020-09-16T09:01:31Z

← Older revision		Revision as of 09:01, 16 September 2020
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	* Windcatcher.		* Windcatcher.

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

Editor at 12:25, 30 August 2017

2017-08-30T12:25:52Z

← Older revision		Revision as of 12:25, 30 August 2017
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	[[File:Solar_chimney.jpg\|386px\|link=File:Solar_chimney.jpg]]		[[File:Solar_chimney.jpg\|386px\|link=File:Solar_chimney.jpg]]

−	Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep. This maximises the surface area that can absorb solar radiation and maximises the surface area in contact with the air inside the chimney. Variations in design can incorporate multiple chambers to further increase surface area and may use materials with high solar absorption such as metal to maximise the temperatures achieved within the chimney. Low emissivity coatings, and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls. It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces.	+	Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep. This maximises the surface area that can absorb solar radiation and maximises the surface area in contact with the air inside the chimney.

−	In cooler conditions, the chimney can be used to direct absorbed heat back into the building by closing it at the top.	+	Variations in design can incorporate multiple chambers to further increase surface area and may use materials with high solar absorption such as metal to maximise the temperatures achieved within the chimney. Low emissivity coatings, and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls.
		+
		+	It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces. In cooler conditions, the chimney can be used to direct absorbed heat back into the building by closing it at the top.

	= Find out more =		= Find out more =
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	* Trombe wall.		* Trombe wall.
	* Ventilation.		* Ventilation.
		+	* Windcatcher.

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

Editor at 12:28, 5 January 2017

2017-01-05T12:28:10Z

← Older revision		Revision as of 12:28, 5 January 2017
Line 1:		Line 1:
−
	Solar chimneys (or thermal chimneys) are a form of passive building design.		Solar chimneys (or thermal chimneys) are a form of passive building design.

Line 8:		Line 7:
	Solar chimneys are generally tall, wide structures constructed, facing the sun, with a dark coloured, matt surface designed to absorb solar radiation. As the chimney becomes hot, so it heats the air inside it. The hot air rises up the chimney and is vented out of the top, and in so doing it draws more air in at the bottom of the chimney. This can be used to drive passive ventilation in buildings where cross ventilation or stack ventilation may not be sufficient, and where designers wish to avoid using energy-consuming mechanical ventilation.		Solar chimneys are generally tall, wide structures constructed, facing the sun, with a dark coloured, matt surface designed to absorb solar radiation. As the chimney becomes hot, so it heats the air inside it. The hot air rises up the chimney and is vented out of the top, and in so doing it draws more air in at the bottom of the chimney. This can be used to drive passive ventilation in buildings where cross ventilation or stack ventilation may not be sufficient, and where designers wish to avoid using energy-consuming mechanical ventilation.

−	[[File:~~Solar chimney~~.jpg\|~~393x250px~~\|~~alt~~=~~Solar chimney~~.jpg]]	+	[[File:Solar_chimney.jpg\|386px\|link=File:Solar_chimney.jpg]]

	Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep. This maximises the surface area that can absorb solar radiation and maximises the surface area in contact with the air inside the chimney. Variations in design can incorporate multiple chambers to further increase surface area and may use materials with high solar absorption such as metal to maximise the temperatures achieved within the chimney. Low emissivity coatings, and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls. It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces.		Solar chimneys are particularly effective in climates that are humid and hot. They are most efficient when they are tall and wide, but not very deep. This maximises the surface area that can absorb solar radiation and maximises the surface area in contact with the air inside the chimney. Variations in design can incorporate multiple chambers to further increase surface area and may use materials with high solar absorption such as metal to maximise the temperatures achieved within the chimney. Low emissivity coatings, and glazing can also be used to reduce heat losses back to the outside, similar to the design of trombe walls. It is important that the chimney is insulated from the building itself so that heat gains do not transmit into occupied spaces.
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===
−	*Cross ventilation.
−	*Natural ventilation.
−	*Passive building design.
−	*Passive solar design.
−	*Solar thermal systems.
−	*Stack effect.
−	*Sustainability.
−	*Thermal comfort
−	*Thermal mass.
−	*Thermal storage for cooling.
−	*Trombe wall.
−	*Ventilation.

−	[[Category:Sustainability]]	+	* Approved Document J.
−	[[Category:Products_/_components]]	+	* Cross ventilation.
		+	* Natural ventilation.
		+	* Passive building design.
		+	* Passive solar design.
		+	* Solar thermal systems.
		+	* Stack effect.
		+	* Sustainability.
		+	* Thermal comfort
		+	* Thermal mass.
		+	* Thermal storage for cooling.
		+	* Trombe wall.
		+	* Ventilation.
		+
		+	[[Category:Sustainability]] [[Category:Products_/_components]]