Showing results 51 - 100 of 179
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In hot climate zones, shade building surface with vegetation for passive cooling.
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In hot, dry climates, passive cooling should focus on shading, night flush through cross ventilation and whole-house fans, potentially using high-mass construction
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In hot, humid climates, passive cooling should focus on shading, airflow through cross ventilation and ceiling fans, and low-mass construction
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In midsummer, the roof and skylights will receive much more solar radiation per square foot than an unshaded east- or west-facing wall, which in turn will receive more solar energy than north- or south-facing walls
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In the middle of summer, the sun shines most directly on the east and west sides of a house, while in winter it shines mostly from the south.
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Inducing airflow through the stack effect requires low inlets and high outlets such as a ridge hood or crown monitor
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Infrared photometry shows the impact of a roof overhang on the south façade of a home, where the unshaded patio stonework is significantly hotter than the shaded portions of the patio and wall surfaces (temperature scale shown is in Celsius).
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Installing an ENERGY STAR ceiling fan is a low-energy way to improve comfort in a designated cool room
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Interior window attachments such as these light-filtering roller shades can reduce heat gains while providing pleasant, diffuse natural light.
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Keep mulch away from trunk of the tree to allow air circulation at the root collar.
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Landscape trees and shrubs to funnel cooling breeze towards a home in hot climate zones.
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Landscaping and Bahama shutters can provide important shade for a designated cool room
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Large deciduous trees provide heat-blocking shade to the walls and windows of this house.
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Leave the soil level around an existing trunk as is (left); do not increase soil height (center) or remove soil in the root zone (right).
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Light colors have been used on exterior walls and roofs to keep buildings cooler in hot climates for centuries, as shown by this traditional building in Morocco, built in the early 1800s
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Light-colored roofs and walls and deep overhangs for shade are some of the features used by builders in the hot-humid climate (Source: Alys Beach Construction).
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Locating windows on adjacent and opposite sides of the house will allow cross ventilation regardless of wind direction
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Low perimeter to area (P/A) ratio home designs reduce heat transfer and perform better in hot climate zones than high P/A ratio homes.
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Multi-layer honeycomb cellular shades such as these can provide summertime energy savings by blocking and reflecting solar heat, as well as wintertime energy savings by providing added insulation.
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Natural ventilation can be wind-driven (cross ventilation) or buoyancy-driven (stack ventilation)
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Passive cooling techniques can reduce or eliminate the use of air conditioning and can be used for backup cooling during emergencies.
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Pleated blinds provide cooling savings in summer by blocking and reflecting sunlight, while allowing some diffuse daylight to pass through.
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Porch roofs, pergolas, and large overhangs can effectively shade windows and doors facing south, southeast, southwest, or even due east or west for most of the day if the overhang is very deep and sufficiently wide.
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Portable air conditioners offer flexibility with where they are located, but usually need to be installed near a window as they require one or two intake/exhaust ducts connected to the exterior
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Reduce thermal bridging in hot climate zones by using an intersecting exterior wall framing technique as shown here.
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Right - Covered porches protect the south-facing windows and doors of this building from solar heat gain.
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Right - Dense vines growing on a covered trellis along the west side of this home provide effective shade for the wall and windows and create a shaded, protected walkway and outdoor seating area.
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Right - In cooler climates, landscape shading should focus on the east- and west-facing walls, while leaving the south side of the house clear for solar access in winter (well-sized roof overhangs could provide summer shading for the south-facing windows)
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Right - These interior solar screens help control glare and solar heat gain while maintaining view to the outside.
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Right - These retractable awnings provide shade to this outdoor living space and reduce heat gain and glare within the home.
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Right - This builder preserved the trees around this new urban-infill home, providing excellent shading in the summer.
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Right - This house has key features to block heat such as such as tree shading for the west wall and roof, minimized west-facing windows, and a porch roof, floor, and wing walls creating deep architectural overhangs and fins to shade south-facing windows
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Right – Deep overhangs, pergolas, and covered entryways minimize heat gain in this commercial building in the hot-dry climate.
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Right – deeply inset entryways and overhangs provide shade to reduce solar heat entry to this building.
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Right – Horizontal overhangs on this house block sunlight in the summer while allowing it in during winter
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Right – Strategically placed trees provide shade to the south-facing windows of this building.
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Right – the building on the right employs light-colored walls, deep tinting, and deeply recessed windows to minimize solar heat gain
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Right – The canopy of this tree is high enough to allow views out the windows of this home while providing excellent shade to walls, windows, and roof.
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Right – The insulation has been located to the exterior of the thermal mass in this wall section
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Right – thermal mass walls, small windows, and recessed porch and trees on the south side of this southwest home help to minimize solar heat gain.
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Right – this commercial building employs good techniques to resist solar heat gain: awnings and pergolas over windows, recessed windows and entryways, deep tinting on glass, and shade plants.
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Right – This home uses a light-colored exterior wall to reduce solar heat gain
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Right – This home uses light tan stucco and white trim to reduce solar heat gain.
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Right – This metal roof is being coated with a cool (high SRI) coating to reduce solar heat gain
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Right – This model home for the Solar Decathlon competition incorporates vertical trellises and retractable exterior blinds to control solar heat gain.