Sun wind light architectural design strategie pdf free download

However, in most cases, instead of extracting ideas and processes, designers, under … Expand. The 5, square foot commercial building with offices, … Expand. Parametric strategy on passive design affordances in cool-humid climate zones of North-East India. Synergetic relationships ameliorates energy shortage and affords comfort. Horizontal or vertical? Purpose The purpose of this paper is to constitute an efficient way to improve energy efficiency and occupants comfort in buildings through reduction of direct solar heat gains by exterior … Expand.

Daylighting is a passive design strategy for lighting office spaces given the fact that offices operate within daytime, usually between am to pm which corresponds to the period of daylight … Expand. Vernacular urban configurations still constitute sources of inspiration for architects and urban designers. However, in most cases, instead of extracting ideas and processes, designers, in order to … Expand. This paper describes the passive design strategies of Sunny Inside, which is a zero-energy solar house designed to participate in Solar Decathlon China Getting to understand the climate at the site starts with a few important information.

There are warm-humid, cold-windy? But that has started to change in the which direction does the wind blow? There are good references for most of this data online however it should be noted to take a look at the local building code as well. During the summer achieved by approaching building design with an months, the sun remains in the sky the longest and understanding of the local climate, building geometry thereby appears at the highest point of the sky.

However, and most importantly, orientation in regards towards in the winter, the sun is present to a lesser extent. More solar geometry. Orientation alone can change drastically importantly, during the winter, the sun appears closer to the ability to produce an effective amount of passively the horizon.

Note: that this is relevant to the Northern achieved energy in a building. Along with orientation there are a few additional elements of passive solar design that should be Architects and builders have been using this technique to incorporated when considering passive design strategies.

The south is important because this is where the sun can be used to its fullest Aperture — Fenestration and glazing is a key aspect in extent in the winter when it is most needed to heat the passive solar design because it is how the heat will home, passively. The overhang is equally important primarily be accessing the building. The placement of the because during the summer, when heating is rarely windows should be focused primarily on the south needed, the overhang blocks the summer sun from elevation of the house to allow for the maximum entering the building.

Using overhangs techniques in the exposure to sun that is needed to passive heat the south elevation of the building will allow for maximum building. An Absorber — This is the action of storing the heat that enters through the aperture of a building and collecting it for future use. An absorber, also known as a trombe wall, works best when positioned in the direct path of sunlight. Most commonly this practice is done through a material with high thermal mass like concrete, masonry, adobe or most effectively water.

Materials with a high heat capacity by volume ratios work best as an absorber of heat. Another technique is using darker color paints on walls where absorbing properties are needed and using light color paint where reflective properties are needed. Some examples of an absorber include a concrete slab floor, an adobe brick common wall, or even a water storage tank. It is important to note that if the volume of thermal mass is too great for the building it can turn from an asset to a liability by requiring more energy to heat.

Notice how directly the winter sun is penetrating the building to heat the space passively. This time lag is used by designers to incorporate the indirect Fenestration - Glazing should be strategically used so heat gain to be distributed out during the night when it is that it is both good at capturing heat and daylight but also otherwise needed.

Indirect gain is the process of effective at insulating when sunlight is not needed releasing heat after the main source of heat, the sun, has Hotter days, or at night. This can be accomplished by set behind the horizon for the night.

Direct gain is the act drapes with thermal liners, awnings or overhangs, low of absorbing heat directly from the sun like standing in emissivity coatings, or high performance double, triple front of a window. Indirect heat gain should be used to pane windows.

This passive process will blocking the direct overhead rays of the summer sun all help reduce the need to condition a building by active while allowing the direct rays of the winter sun.

Overhangs can alternatively be a balcony, reflective mirror or a design aspect that shields the summer light from entering the building.

Thermosiphoning — A convective loop system is a passive strategy that recycles and moves warm air from a collector to a storage or room in a building and back to the collector as colder air. This process is accomplished by using the thermodynamics of a convective loop to move the warm air where it is needed and return the air to the collector area.

This process has been greatly expanded on as an active design strategy, however, its roots still remain as a passive system because of the nature of convective loops to move warm air. Figure 4 — Direct gain vs Indirect gain: Direct gain is used during the day to heat the space, users and the thermal mass.

While indirect gain is used at night after the sun has set. This creates a less volatile distribution of temperatures in a building. The Figure 5 — Thermosiphon is a convective-loop system that following section is regarding the different vehicles to be moves warm air from the collector to the storage house to be used then the cold air returns back to the collector.

Deciduous trees can be used when the use of passive venting. Passive venting refers to shading is needed in the summer. Some of the factors to openings in the building envelope that allow for heat and consider when deciding on which trees work best is to air flow to move through the building look at branch and twig density and winter sun filtration. An arrangement of evergreen shrubs and trees natural flow of air when it is needed. The stack effect uses temperature differences to move air. Hot air rises because it is lower pressure.

This can be accomplished by a variety of methods including: roof vents, gable vents, thermal chimneys, or thermosiphons. Wind can enter the building by a lower vent or alternatively by a Figure 6 — The use of overhangs, orientation, and landscaping can properly control the effects of passive heat gain to more windcatcher tower. Brown R. All rights reserved. All graphic icons, bundle diagrams, design strategy maps, illustrations new to the third edi- tion, sundials, sun path diagrams, Climatic Context reports, Climate Calendar spreadsheet iles, the SWL Tools spreadsheets, the full text of Part VII High-Performance Buildings, and climate data tables and maps throughout the printed and electronic components are copyright by Mark DeKay and used by permission.

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Some material included with standard print versions of this book may not be included in e-books or in print-on-demand. For more information about Wiley products, visit www. Each bundle helps build one or more larger strategies at 4 Then use eficient mechanical cooling systems for the next scale of complexity.

The core strategies of this any remaining loads. In most buildings, a few strategies will be used. A sin- FORCES gle strategy is rarely effective in all situations throughout One of the challenges for designers of passively cooled the day or in all seasons.

The guidelines are general, and buildings is the selection of appropriate cooling strat- exceptions to most of them are possible. This places an upper limit on A second challenge is that cooling forces during hot outdoor temperature at which natural ventilation alone for periods tend to be weak and dispersed. Passive cooling cooling is effective, depending on comfort criteria.

Higher temperatures require the build- These two challenges mean that a combination of ing to be closed for part of the day when it is too hot passive cooling approaches must often be used, each for ventilation. In this bundle, strategies at the ings in extreme climates. Typically, There are ive strategies that are considered invari- neither of the ground-based strategies will provide for the ants in all passively cooled buildings.

While one of entire cooling load. In most will beneit from each of these ive strategies, whether the cooling climates, temperatures during the summer after- climate is arid or humid. They may often work well, but winds tend to be most calm at night.

Designers can ask, What spaces such as circulation almost all passively cooled buildings. This strategy directs or morning meeting can happen in unconditioned out- the designer to consider the sectional quality of the build- door spaces?

This strategy directs the designer to consider ing to enhance this gravity-driven ventilation system. In the combination of wind and sun directions when locat- a room cooled by stack-ventilation, warm air rises, exits ing outdoor rooms.

For example, in a hot climate, when through openings at the top of the room, and is replaced the summer sun and wind come from the same direction, by cooler air entering low in the room. Solar heat gain on the swings and can be located between the more protected roof is greatest in the middle of the day, when the sun is rooms and undesired heat sources, often the eastern or overhead in summer.