Solar chimney - Revision history

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energy>Ethan.boechler at 18:39, 18 June 2021

2021-06-18T18:39:43Z

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	[[File:Solarchimney2.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]		[[File:Solarchimney2.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]

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	==How it Works==		==How it Works==
	Solar chimneys are easy and inexpensive means to [[heat]] and ventilate a building. First, a chimney is built and coated in some dark or black material. It is coloured black because this minimizes the amount of [[sunlight]] that is reflected off of the [[chimney]], absorbing more of the heat and ensuring more of the heat is transferred to the air inside the building.<ref name="RE1"/> As well, these chimneys are generally placed on a ~~South~~ facing wall if the home is in the Northern hemisphere. For an explanation of ''why'' it is the south facing wall, click [[Solar collector orientation\|here]].		Solar chimneys are easy and inexpensive means to [[heat]] and ventilate a building. First, a chimney is built and coated in some dark or black material. It is coloured black because this minimizes the amount of [[sunlight]] that is reflected off of the [[chimney]], absorbing more of the heat and ensuring more of the heat is transferred to the air inside the building.<ref name="RE1"/> As well, these chimneys are generally placed on a south-facing wall if the home is in the Northern hemisphere. For an explanation of ''why'' it is the south facing wall, click [[Solar collector orientation\|here]].

	The process of '''heating''' a space using a solar chimney is fairly simple. When the solar radiation hits the side of the chimney, the column of air inside the chimney is heated. If the top exterior vents of the chimney are closed, the heated air is forced back into the living space. This provides a type of [[convection\|convective air heating]]. As the air cools in the room it is pulled back into the solar chimney, heating once again.<ref name="RE2">Autodesk Sustainability Workshop. (August 10, 2015). ''Stack Ventilation and Bernoulli's Principle'' [Online]. Available: http://sustainabilityworkshop.autodesk.com/buildings/stack-ventilation-and-bernoullis-principle</ref> When solar chimneys are used for heating, they operate similarly to Trombe walls.		The process of '''heating''' a space using a solar chimney is fairly simple. When the solar radiation hits the side of the chimney, the column of air inside the chimney is heated. If the top exterior vents of the chimney are closed, the heated air is forced back into the living space. This provides a type of [[convection\|convective air heating]]. As the air cools in the room it is pulled back into the solar chimney, heating once again.<ref name="RE2">Autodesk Sustainability Workshop. (August 10, 2015). ''Stack Ventilation and Bernoulli's Principle'' [Online]. Available: http://sustainabilityworkshop.autodesk.com/buildings/stack-ventilation-and-bernoullis-principle</ref> When solar chimneys are used for heating, they operate similarly to Trombe walls.

Jmdonev: 1 revision imported

2020-01-31T05:10:14Z

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Energy>Jmdonev at 19:20, 30 January 2020

2020-01-30T19:20:55Z

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	[[File:Solarchimney2.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]		[[File:Solarchimney2.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]

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Jmdonev: 1 revision imported

2017-08-29T01:47:19Z

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Jmdonev at 20:24, 15 August 2017

2017-08-15T20:24:53Z

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	[[File:~~Solarchimney~~.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]		[[File:Solarchimney2.png\|360px\|thumb\|right\|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]

	<onlyinclude>A '''solar chimney''' is a type of [[passive solar heating and cooling]] system that can be used to regulate the [[temperature]] of a building as well as providing ventilation. Like a [[Trombe wall]] or [[solar wall]], solar chimneys are a way to achieve [[energy efficient building design]].</onlyinclude> Essentially, solar chimneys are hollow containers that connect the inside part of the building to the outside part of the building.<ref name="RE1">Greenzly. (August 7, 2015). ''How do solar chimneys work?'' [Online]. Available: http://www.greenzly.org/article/how-does-solar-chimney-work/277</ref>		<onlyinclude>A '''solar chimney''' is a type of [[passive solar heating and cooling]] system that can be used to regulate the [[temperature]] of a building as well as providing ventilation. Like a [[Trombe wall]] or [[solar wall]], solar chimneys are a way to achieve [[energy efficient building design]].</onlyinclude> Essentially, solar chimneys are hollow containers that connect the inside part of the building to the outside part of the building.<ref name="RE1">Greenzly. (August 7, 2015). ''How do solar chimneys work?'' [Online]. Available: http://www.greenzly.org/article/how-does-solar-chimney-work/277</ref>
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2015-08-26T21:31:39Z

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Kjstenho at 19:22, 18 August 2015

2015-08-18T19:22:33Z

New page

[[Category:Done 2015-08-21]]
[[File:Solarchimney.png|360px|thumb|right|Figure 1. A diagram of a solar chimney that uses a secondary vent that travels below ground. This helps to cool intake air when the chimney is used for cooling.<ref>Wikimedia Commons. (August 10, 2015). ''Solar Chimney'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Solarchimney.svg/2000px-Solarchimney.svg.png</ref>]]

<onlyinclude>A '''solar chimney''' is a type of [[passive solar heating and cooling]] system that can be used to regulate the [[temperature]] of a building as well as providing ventilation. Like a [[Trombe wall]] or [[solar wall]], solar chimneys are a way to achieve [[energy efficient building design]].</onlyinclude> Essentially, solar chimneys are hollow containers that connect the inside part of the building to the outside part of the building.<ref name="RE1">Greenzly. (August 7, 2015). ''How do solar chimneys work?'' [Online]. Available: http://www.greenzly.org/article/how-does-solar-chimney-work/277</ref>

==How it Works==
Solar chimneys are easy and inexpensive means to [[heat]] and ventilate a building. First, a chimney is built and coated in some dark or black material. It is coloured black because this minimizes the amount of [[sunlight]] that is reflected off of the [[chimney]], absorbing more of the heat and ensuring more of the heat is transferred to the air inside the building.<ref name="RE1"/> As well, these chimneys are generally placed on a South facing wall if the home is in the Northern hemisphere. For an explanation of ''why'' it is the south facing wall, click [[Solar collector orientation|here]].

The process of '''heating''' a space using a solar chimney is fairly simple. When the solar radiation hits the side of the chimney, the column of air inside the chimney is heated. If the top exterior vents of the chimney are closed, the heated air is forced back into the living space. This provides a type of [[convection|convective air heating]]. As the air cools in the room it is pulled back into the solar chimney, heating once again.<ref name="RE2">Autodesk Sustainability Workshop. (August 10, 2015). ''Stack Ventilation and Bernoulli's Principle'' [Online]. Available: http://sustainabilityworkshop.autodesk.com/buildings/stack-ventilation-and-bernoullis-principle</ref> When solar chimneys are used for heating, they operate similarly to Trombe walls.

'''Cooling''' a space using a solar chimney is slightly different than cooling using a Trombe wall. Since a roof overhand cannot be installed in addition to a solar chimney, two additional vents are present. The first vent has been mentioned, the one at the top of the chimney.<ref name=Article5> N. Bansal. R. Mathur. and M. Bhandari. “Solar Chimney for Enhanced Stack Ventilation.” Building and Environment, vol. 28, pp. 373-377, July 1993 </ref> The second is at the opposite end of the building, providing an opening between the building and outside air to allow for ventilation. When solar radiation hits the side of the chimney, the column of air inside the chimney is again heated. The vent at the top of the chimney is kept open so this heated air is not trapped. This heated air is pulled up and out of the chimney, pulling new air in from the outside and creating a sort of "draft" that provides cool, fresh air into the building.<ref name="RE2"/>

==References==
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