View source for Passive solar heating and cooling

[[category:residential]]
[[Category:Done 2015-08-21]] 
[[File:Hidden_Villa_Education_Center_2010.jpg|360px|thumb|right|Figure 1. A home equipped with passive solar heating and cooling technologies, including visible trombe wals.<ref>Wikimedia Commons. (August 7, 2015). ''Hidden Villa'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/0/09/Hidden_Villa_Education_Center_2010.jpg</ref>]]
<onlyinclude>'''Passive solar heating and cooling''', sometimes referred to simply as '''passive solar design''', is the process of using specific building systems to help regulate internal [[temperature]] by using the [[Sun]]'s [[energy]] selectively and beneficially in an attempt to improve the [[energy efficiency]].</onlyinclude> In these systems, the building itself or some element of it takes advantage of the natural energy characteristics of materials when exposed to the Sun. Generally these passive systems are simplistic with few moving parts, thus requiring minimal maintenance.<ref name="RE1">Passive Solar Design. (August 7, 2015). ''Passive Solar Design'' [Online]. Available: http://passivesolar.sustainablesources.com/</ref>

This engineering required to create these systems includes carefully selecting materials for the [[building envelope]] - including the building's [[wall assembly|walls]], floors, roofs, [[windows]] and their [[glazing]] materials - and determining their proper [[Solar collector orientation|orientation]]. Passive heating and cooling strategically captures or shades against [[solar radiation]].<ref name="RE2"> H. Chan. S. Riffat and J. Zhu. “Review of Passive Solar Heating and Cooling Technologies.” Renewable and Sustainable Energy Reviews, vol. 14, pp. 781-789, February 2010.</ref>

==How They Work==
Solar heating and cooling systems take advantage of natural processes such as [[conduction]], [[convection]] and [[radiation]] to warm or cool a building. Because of this, they require little to no external energy to function and can contribute to the energy efficiency of a home. When the Sun shines, the solar radiation heats buildings. This solar energy is converted into [[heat]] and transported by hot [[air]] or [[water]] into the building.<ref name="RE2"/> By strategically capturing or shading against this [[radiation]], the temperature of a home can be regulated.<ref name="RE1"/>

Additionally, the heat gain from the solar [[insolation]] can be stored for future use. Capturing solar radiation in the winter helps to warm up the space, and shading from solar radiation in the summer cools the space. Hence, the use of [[insulation]] and [[thermal mass]] is crucial to prevent over-cooling of a space in the winter.<ref name="RE2"/> Likewise, the use of shading technologies in combination with windows and glazing is equally important in preventing over-heating of a space in the summer.

==Passive Solar Technologies==
Passive heating and cooling systems are used to avoid using [[air conditioning]] or a [[heater]]. Many of the most advanced techniques for [[home temperature control]] use passive methods to accomplish [[energy efficiency]]. There are a variety of different technologies that selectively harness or shield against the Sun's energy to heat or cool a building without using a heater or air conditioner. These technologies include operable windows, [[solar chimney]]s, [[solar wall]]s, and [[trombe wall]]s.<ref name="RE1"/>

These technologies used to regulate internal space temperatures by capturing or venting heat from solar radiation. [[Shading technology]] can also be used strategically to reduce heating. By creating places where shade can be increased or decreased, the amount of solar radiation entering a space is reduced, therefore keeping the room cool without the use of an air conditioner.

These technologies can be used for a newly built structure and can also be incorporated into existing structures. Local climate is always the biggest factor when designing and implementing passive solar heating and cooling systems.<ref name="RE2"/>

Here's an article with a more in depth discussion of [http://architecturerevived.blogspot.ca/2013/10/designing-passive-solar-heating-and.html architecture in passive solar heating and cooling].

==References==
{{reflist}}
[[Category:Uploaded]]