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Passive Solar Design in Architecture:
The slideshow shows some passive solar basics and includes more advanced concepts of sustainable architecture. It is a great resource!
Passive solar design: Case study - House Solarei NZ (Architect Duncan Firth). Solarei.com
Transcript of Passive Solar Design on Slideshare:
- 1. IN ARCHITECTURE PASSIVE SOLAR DESIGN
- 2. If you touch that concrete floor with your bare hands what will the temperature feel like? Warm, cool, or hot? Photo David Dodge, Green Energy Futures With Les Wold of Effect Homes. Large southern windows for passive solar heat with concrete floor. www.greenenergyfutures.ca/episode/62-power-passive-solar-...
- 3. Passive Solar Homes in Afghanistan (Kabul). Using what you have! A very practical solution to heating a home! See the plastic windows to the front of the buildings! © Oriane Zera Passive Solar House (PSH) techniques use insulation and solar energy, the latter being both abundant and free in the region of Kabul.
- 4. Inside the passive solar house in Afghanistan. Typical large “glass curtain”(plastic) to the front with a good heat sink (floor and front wall). Ingenious, practical and simple application of a passive solar designed house! The plastic keeps the heat in and the thermal mass warms up the building at no cost to the owner. © GERES The veranda becomes a pleasant living space with heat diffused into the adjacent rooms.
- 5. How passive solar design works: Roof overhang allows or screens the sun out (winter and summer).See the height of the sun at different angles (winter and summer). Floor and walls act as thermal mass to absorb the sun’s heat (winter). Deciduous trees to the front of the building can screen the sun in summer (not shown on this diagram). Diagram showing good passive solar design (Hibshman, 1983, p.71)
- 6. Three simple stages of passive solar design: Collect heat from the sun, store heat in a heat sink, and release the heat within an insulated building. http://www.ecobob.co.nz/EcoBlog/1175/ 259/Tour-of-Nelson-Eco-Houses.aspx
- 7. DIAGRAM: Passive solar design showing the difference between winter and summer conditions. See the water pipes in the floor and ceiling. The warm water can be cycled (pumped ) through the building to heat up the interior during winter. Concrete floor and concrete ceiling with copper pipes in situ filled with water. No cost to the owner. The pump could run on electric power harvested from the photovoltaic panels! ROOF OVERHANG: See how the sun is let in during winter and how it is shut out during summer. Sun heats up the thermal mass (walls) during winter and the heat is transferred into the building. This would mean a saving on heating the building during winter. DOUBLE GLAZED WINDOWS: These windows act as insulators and keep the warm or cold air in the building. It controls the temperature and keep it stable inside the building.
- 8. USING THE BASEMENT (WHICH IS COOLER) TO COOL DOWN THE REST OF THE BUILDING, VERY CLEVER! Notice the basement and how the air is circulated through the basement to cool the air in the building. Two vertical ducts draws the cool air from the basement and the cool air is pushed upwards to ventilate the building. See how the cool air enters from the left and how the warmer air escapes on the right (passive ventilation) The ducts from the basement allows the air to flow through the building and cool it down. It is possible to install small fans (solar powered) in the ducts to assist moving the air along. BASEMENT http://c1038.r38.cf3.rackcdn.com/group5/building40163/media/Passive cooling system.jpg
- 9. SLIDING MECHANISM AND PASSIVE SOLAR PRINCIPLES: The ‘SLIDES’ (‘sustainable, livable, and interactive design’) house concept by a team of architecture and engineering students at the American University in Cairo (AUC) is a solar-powered living structure designed to address local sustainability challenges while offering an aesthetic that draws heavily on the region’s traditional architecture and design. The AUC team is be the first Middle Eastern and African University team to compete in the European solar decathlon, held in June 2012, which challenges teams to design a fully functional 21st century home that benefits from the highest efficiency of solar power and sustainability. http://www.designboom.com/architecture/slides-solar-house-for-egypt
- 10. ‘SLIDES’ (‘sustainable, livable, and interactive design’) house concept, designed by a student team at the American university in Cairo and to be presented at the Solar Decathlon Europe 2012. The ‘SLIDES‘ (‘sustainable, livable, and interactive design’) house concept by a team of architecture and engineering students at the American university in Cairo (AUC) is a solar- powered living structure designed to address local sustainability challenges while offering an aesthetic that draws heavily on the region’s traditional architecture and design. the AUC team is be the first middle eastern and African university team to compete in the European solar decathlon, held in June 2012, which challenges teams to design a fully functional 21st century home that benefits from the highest efficiency of solar power and sustainability. The ‘SLIDES’ house is a net zero energy structure, utilizing photovoltaic cells and solar thermal roof panels. The house is designed specifically to address the major challenges that Egypt’s climate poses for sustainability: The need for a cooling system in the hot weather, and regional water shortages. ‘SLIDES’ maximizes the use of natural ventilation and cooling, reducing the need for electrically-powered air-conditioning. a grey water filtration system recycles already used water to functions like drip irrigation and toilets. the designers describe the house structure as a ‘matchbox’, whose interlaid segments can slide in and out to regulate solar gain and shade. a double-layered perforated facade fits over the structure, regulating sunlight penetration while offering a contemporary interpretation of Mashrabiya, the latticework windows traditional to Arabic architecture. As the two layers of these perforated panels slide along one another, different amounts of light are permitted to enter the structure. http://www.designboom.com/architecture/slides-solar-house-for-egypt/ Copyright: Designboom.com
- 11. SLIDES’ is founded on a passive heating and cooling system. during the summertime, the screen is kept closed by day to minimize heat entering the interior, while a ventilation outlet in the building’s ceiling provides an escape for hot air. at night, the windows are opened to permit the circulation of fresh air. during winter, the repositionable screen is moved to the open position to maximize solar gain and heat absorption, while at night heat stored in the thermal mass flooring is used to heat the interior space. the design team has developed a fiber reinforced polymer for use in the building’s construction, composed of recycled plastic bags and wood waste. the team is also exploring the use of traditional papyrus for the creation of the movable screen. the building’s exterior design is based on the interlocking stones of ancient Egyptian construction. Copyright: Designboom.com
- 12. SLIDE HOUSE CLOSED: Copyright: Designboom.com
- 13. SLIDE HOUSE OPEN: Copyright: Designboom.com
- 14. SLIDE HOUSE OPEN Copyright: Designboom.com
- 15. Some of my thoughts on the SLIDES solar house for Egypt: Nano Technology and Bio-mimetics The heat sink (thermal mass),just on the inside of the “outer skin", could be chosen and designed to suit the conditions required. When you look through the holes on the outer skin you can see the heat sink (second layer). Light weight concrete could be a good choice here! Nano technology and the application of it could maximize the efficiency of the design in future! Using bio-mimetics (ask how nature does it) could be explored to look at how plants, insects and animals moves and uses their skin/leaves/shell/exoskeleton, etc. and improve on certain aspects. The idea is here is just to mention that bio-mimetics could be used in refining the deign process! If you are interested in bio-mimicry see the next slide! William Van Zyl
- 16. BIO-MIMETICS : What is this? http://www.asknature.org/
- 17. About this Open Education Resource (OER) The intention of this slideshow is to provide a basic introduction to passive solar design and architecture. A very simple historical example (Afghanistan) is given with some diagrams to explain the basics of passive solar and some passive ventilation principles (comparing winter and summer). Towards the end an example of a more complex design (Solar decathlon 2012-SLIDE house, Egypt) is included to illustrate some of the combination of solar principles and movement in relation to the sun (harvesting the energy of the sun). On some of the last slides I make a comment about the SLIDE house to get the viewer to think about Nano technology and bio-mimetics. The last slide provide a link to a website on Bio-mimetics. The viewer can explore bio-mimicry and its role in design by asking nature how? USE OF THIS RESOURCE: See Creative common license on the last slide.
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Slideshare resource: Appraisal opportunities and ideas for Education setting (e.g. High School teachers).
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