Advanced natural ventilation ANV - Revision history

Designing Buildings at 10:16, 2 March 2023

2023-03-02T10:16:05Z

← Older revision		Revision as of 10:16, 2 March 2023
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−	Advanced natural ventilation (ANV), is often used to describe natural ventilation (NV) strategies for buildings that go beyond simple strategies for bringing fresh air into ~~and extract stale air out of~~ buildings, via single sided or cross ventilation through opening lights, windows or trickle ventilators. Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through stack effect, buoyancy or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells ~~and~~ wind catchers, cowls or scoops.	+	= Introduction =
		+
		+	Advanced natural ventilation (ANV), is often used to describe natural ventilation (NV) strategies for buildings that go beyond simple strategies for bringing fresh air into buildings via single sided or cross ventilation, through opening lights, windows or trickle ventilators. Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through the stack effect, buoyancy, or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces, light wells, wind catchers, cowls and scoops.

	= History =		= History =

−	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air~~, winnow~~, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system where heated air was distributed through a building via pipes and tile vents. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.	+	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, and from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, fan, agitate or set in motion.

−	~~= Complexity =~~	+	In early history the Roman hypocaust system, was a heated underfloor ventilation system in which heated air was distributed through a building via pipes and tile vents.

−	~~Designing~~ natural ventilation ~~can become extremely complex because~~ of the ~~interaction between cross~~ ventilation and the ~~stack effect as well as complex building geometries~~ and the ~~distribution~~ of ~~openings. This can require analysis using specialist software analysis~~ systems ~~such as computational fluid dynamics~~.	+	In the early 1630's, King Charles I decreed ceilings in England should be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nation's health problems.
		+
		+	By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air. A blowing wheel system was installed in the Houses of Parliament in London.
		+
		+	In slang, ventilation had an adopted the meaning of shooting someone ie by making holes in them to ventilate them.
		+
		+	In the 1840's the system in Parliament had been upgraded to a heating and cooling ventilation system. By the early 1900's simple air conditioning systems started appearing and would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advanced natural ventilation, mixed mode and heat recovery have become more and more commonplace.
		+
		+	= Complexity =

−	~~These more complex~~ natural ventilation ~~systems might be described as advanced natural ventilation (ANV), where strategies go beyond simply bringing fresh air into and extracting stale air out~~ of ~~buildings, via single sided or~~ cross ~~ventilated opening lights, windows or trickle ventilators. Advanced natural~~ ventilation ~~(ANV) describes strategies that might include specific architectural features to promote natural ventilation through~~ stack effect~~, buoyancy or wind driven ventilation~~ such as ~~ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops, sometimes involving automation~~.	+	Designing natural ventilation can become extremely complex because of the interaction between cross ventilation and the stack effect as well as complex building geometries and the distribution of openings. This can require analysis using specialist software systems such as computational fluid dynamics.

	= Automation =		= Automation =

−	It can sometimes be beneficial to automate natural ventilation systems, or to provide training for occupants and monitor behaviour to ensure systems continue to be operated as intended ~~because~~ natural ventilation is also influenced by occupant behaviour. As an example a person near to a window may choose to close it because of close proximity ~~drafts~~, which might impact the level of carbon dioxide in the whole room by reducing the ventilation, which can in turn impact performance of others in the workplace.	+	It can sometimes be beneficial to automate natural ventilation systems, or to provide training for occupants and monitor behaviour to ensure systems continue to be operated as intended a natural ventilation is also influenced by occupant behaviour. As an example a person near to a window may choose to close it because of close proximity to draughts, which might impact the level of carbon dioxide in the whole room by reducing the ventilation, which can in turn impact performance of others in the workplace.

−	However from the ~~other~~ perspective over automation of ventilation systems can leave occupants feeling disempowered, and unable to locally influence the conditions around them (for example by opening or closing a window ~~themself~~) ~~as a result this~~ can have ~~the consequence that they are~~ more likely to express dissatisfaction with the overall internal conditions and environment ~~they find themselves. In~~ some cases even if the internal environment is in fact optimal when, measured empirically.	+	However from the another perspective over automation of ventilation systems can leave occupants feeling disempowered, and unable to locally influence the conditions around them (for example by opening or closing a window). This can have make them more likely to express dissatisfaction with the overall internal conditions and environment, in some cases even if the internal environment is in fact optimal when measured empirically.

	In modern buildings, which tend to be designed to be completely sealed from the outside unless windows or other ventilators are open, problems, such as condensation, can occur during the winter when openings are closed. As a result, ‘trickle ventilation’, or 'background' ventilation tends to be provided to ensure there is always an adequate level of ventilation. Trickle ventilators can be self-balancing, with the size of the open area depending on the air pressure difference across it.		In modern buildings, which tend to be designed to be completely sealed from the outside unless windows or other ventilators are open, problems, such as condensation, can occur during the winter when openings are closed. As a result, ‘trickle ventilation’, or 'background' ventilation tends to be provided to ensure there is always an adequate level of ventilation. Trickle ventilators can be self-balancing, with the size of the open area depending on the air pressure difference across it.

−	= Combined =	+	= Combined systems =

−	It is possible, although relatively complicated to include heat recovery in natural ventilation systems so that during cooler conditions, heat recovered from extract air is used to pre-heat fresh air entering the building. These systems are normally referred to as mechanical ventilation heat recovery or MVHR, and are a integral part of design strategies such as ~~the~~ Passivhaus ~~standard~~, along with high levels of airtightness, insulation and high performing glazing. These elements combined can help to dramatically reduce the heat energy require in a space, ~~they~~ can also help reduce the surface temperature differential between for example glazed surfaces and solid surfaces which can help improve comfort near those surfaces such as for example a desk placed next to a window, during colder winter months.	+	It is possible, although relatively complicated, to include heat recovery in natural ventilation systems so that during cooler conditions, heat recovered from extract air is used to pre-heat fresh air entering the building. These systems are normally referred to as mechanical ventilation heat recovery or MVHR, and are an integral part of design strategies such as Passivhaus, along with high levels of airtightness, insulation and high performing glazing. These elements combined can help to dramatically reduce the heat energy require in a space, and can also help reduce the surface temperature differential between for example glazed surfaces and solid surfaces which can help improve comfort near those surfaces such as for example a desk placed next to a window during colder winter months.

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =
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	* Ventilation.		* Ventilation.
	* Windcatcher.		* Windcatcher.
−	*

	[[Category:DCN_Commentary]] [[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:DCN_Specification]] [[Category:Research_/_Innovation]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Design]] [[Category:Operations]]		[[Category:DCN_Commentary]] [[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:DCN_Specification]] [[Category:Research_/_Innovation]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Design]] [[Category:Operations]]

Editor at 09:44, 13 February 2023

2023-02-13T09:44:31Z

← Older revision		Revision as of 09:44, 13 February 2023
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	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system where heated air was distributed through a building via pipes and tile vents. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.		The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system where heated air was distributed through a building via pipes and tile vents. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.

−	[[Category:~~Articles_needing_more_work~~]]	+	= Complexity =
		+
		+	Designing natural ventilation can become extremely complex because of the interaction between cross ventilation and the stack effect as well as complex building geometries and the distribution of openings. This can require analysis using specialist software analysis systems such as computational fluid dynamics.
		+
		+	These more complex natural ventilation systems might be described as advanced natural ventilation (ANV), where strategies go beyond simply bringing fresh air into and extracting stale air out of buildings, via single sided or cross ventilated opening lights, windows or trickle ventilators. Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through stack effect, buoyancy or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops, sometimes involving automation.
		+
		+	= Automation =
		+
		+	It can sometimes be beneficial to automate natural ventilation systems, or to provide training for occupants and monitor behaviour to ensure systems continue to be operated as intended because natural ventilation is also influenced by occupant behaviour. As an example a person near to a window may choose to close it because of close proximity drafts, which might impact the level of carbon dioxide in the whole room by reducing the ventilation, which can in turn impact performance of others in the workplace.
		+
		+	However from the other perspective over automation of ventilation systems can leave occupants feeling disempowered, and unable to locally influence the conditions around them (for example by opening or closing a window themself) as a result this can have the consequence that they are more likely to express dissatisfaction with the overall internal conditions and environment they find themselves. In some cases even if the internal environment is in fact optimal when, measured empirically.
		+
		+	In modern buildings, which tend to be designed to be completely sealed from the outside unless windows or other ventilators are open, problems, such as condensation, can occur during the winter when openings are closed. As a result, ‘trickle ventilation’, or 'background' ventilation tends to be provided to ensure there is always an adequate level of ventilation. Trickle ventilators can be self-balancing, with the size of the open area depending on the air pressure difference across it.
		+
		+	= Combined =
		+
		+	It is possible, although relatively complicated to include heat recovery in natural ventilation systems so that during cooler conditions, heat recovered from extract air is used to pre-heat fresh air entering the building. These systems are normally referred to as mechanical ventilation heat recovery or MVHR, and are a integral part of design strategies such as the Passivhaus standard, along with high levels of airtightness, insulation and high performing glazing. These elements combined can help to dramatically reduce the heat energy require in a space, they can also help reduce the surface temperature differential between for example glazed surfaces and solid surfaces which can help improve comfort near those surfaces such as for example a desk placed next to a window, during colder winter months.
		+
		+	= Related articles on Designing Buildings =
		+
		+	* Airbrick.
		+	* BREEAM Potential for natural ventilation.
		+	* Changes to Building Regulations Part F.
		+	* Chilled beam.
		+	* Complex system.
		+	* Condensation.
		+	* Convection.
		+	* Cross ventilation.
		+	* Dew point.
		+	* Heat gain.
		+	* Humidity.
		+	* Interstitial condensation.
		+	* Mechanical, electrical and plumbing MEP.
		+	* Mechanical ventilation.
		+	* Mixed-mode ventilation.
		+	* Night-time purging.
		+	* Passive building design.
		+	* Passive solar design.
		+	* Single-sided ventilation.
		+	* Solar chimney
		+	* Stack effect
		+	* Sustainability.
		+	* Thermal mass
		+	* Trombe walls.
		+	* Types of ventilation.
		+	* UV disinfection of building air to remove harmful bacteria and viruses.
		+	* Ventilation.
		+	* Windcatcher.
		+	*
		+
		+	[[Category:DCN_Commentary]] [[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:DCN_Specification]] [[Category:Research_/_Innovation]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Design]] [[Category:Operations]]

Editor at 09:39, 13 February 2023

2023-02-13T09:39:51Z

← Older revision		Revision as of 09:39, 13 February 2023
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	= History =		= History =

−	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.	+	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system where heated air was distributed through a building via pipes and tile vents. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor at 09:28, 13 February 2023

2023-02-13T09:28:00Z

← Older revision		Revision as of 09:28, 13 February 2023
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	= History =		= History =

−	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, ~~whilst on~~ the side, in slang, ventilation had ~~the~~ adopted meaning of to shoot someone ie by making holes in them, to ventilate them.	+	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In early history the roman hypocaust system, was a heated underfloor ventilation system. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, and a blowing wheel system was actually installed in the Houses of Parliament in London. On the side, in slang, ventilation had an adopted meaning of the shoot someone ie by making holes in them, to ventilate them. In the 1840's the Parliament system had been upgraded to a heating and cooling ventilation system, by the early 1900's simple air conditioning systems that started appearing would soon become very commonplace. Whilst from 2000 onwards, with the increasingly awareness of energy conservation, alternative systems with advance natural ventilation, mixed mode and heat recovery continue to become more and more commonplace.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor at 22:29, 12 February 2023

2023-02-12T22:29:43Z

← Older revision		Revision as of 22:29, 12 February 2023
Line 1:		Line 1:
−	Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple strategies for bringing fresh air into and extract stale air out of buildings, via single sided or cross ventilation through opening lights, windows or trickle ventilators Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through stack effect, buoyancy or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops.	+	Advanced natural ventilation (ANV), is often used to describe natural ventilation (NV) strategies for buildings that go beyond simple strategies for bringing fresh air into and extract stale air out of buildings, via single sided or cross ventilation through opening lights, windows or trickle ventilators. Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through stack effect, buoyancy or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops.

−	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ~~ventilatio~~ as it was ~~assume~~ poor indoor conditions were causing health problems. By 1660 ventilation as described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, whilst in slang, ~~on the~~ ventilation had the adopted meaning of tp shoot someone ie by making ~~hole~~ in them, ventilate them.	+	= History =
		+
		+	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilation as it was assumed poor indoor conditions were causing the nations health problems. By 1660 ventilation was being described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, whilst on the side, in slang, ventilation had the adopted meaning of to shoot someone ie by making holes in them, to ventilate them.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor at 13:49, 11 February 2023

2023-02-11T13:49:46Z

← Older revision		Revision as of 13:49, 11 February 2023
Line 1:		Line 1:
−	Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple ~~opening lights, windows or trickle ventilators that bring~~ fresh air into ~~a building~~ and extract stale air, ~~through~~ single sided ~~ventilation~~ or cross ventilation.	+	Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple strategies for bringing fresh air into and extract stale air out of buildings, via single sided or cross ventilation through opening lights, windows or trickle ventilators Advanced natural ventilation (ANV) describes strategies that might include specific architectural features to promote natural ventilation through stack effect, buoyancy or wind driven ventilation such as ventilation stacks, chimneys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops.

−	~~Buildings described as using advanced natural~~ ventilation ~~(ANV) might include specific architectural features that promote natural ventilation through stack effect~~, ~~buoyancy and~~ wind ~~driven ventilation such~~ as ~~ventilation stacks~~, ~~chinmeys~~, ~~shafts or cowls~~, ~~atria spaces~~ or ~~light wells~~ and ~~wind catchers~~, ~~cowls or scoops~~. ~~It is a general term~~ to ~~describe~~	+	The origins the word ventilation lie in the Latin word ventilatio, or ventulus meaning a breeze, from ventus meaning wind. Ventilatus, was the past participle of ventilare which was interpreted as to brandish, toss in the air, winnow, fan, agitate or set in motion. In the early 1630's, King Charles I decreed ceilings in England to be 10 feet (3 meters) and windows taller than their width to allow for natural ventilatio as it was assume poor indoor conditions were causing health problems. By 1660 ventilation as described as the process of replacing foul air in an enclosed place with fresh, pure air. By the 1740's it was commonly referred to as the act of supplying a room with fresh air, whilst in slang, on the ventilation had the adopted meaning of tp shoot someone ie by making hole in them, ventilate them.
		+
		+	[[Category:Articles_needing_more_work]]

Editor: Created page with "Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple opening lights, windows or trickle ventilators that bring..."

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Created page with "Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple opening lights, windows or trickle ventilators that bring..."

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Advanced natural ventilation (ANV), is often used to describe ventilation strategies for buildings that go beyond simple opening lights, windows or trickle ventilators that bring fresh air into a building and extract stale air, through single sided ventilation or cross ventilation.

Buildings described as using advanced natural ventilation (ANV) might include specific architectural features that promote natural ventilation through stack effect, buoyancy and wind driven ventilation such as ventilation stacks, chinmeys, shafts or cowls, atria spaces or light wells and wind catchers, cowls or scoops. It is a general term to describe