Showing results 51 - 81 of 81
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Shade trees planted on the east or west sides of a house are one of the most effective measures that can be taken to reduce heat gains
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Side by side comparisons of standard roofing colors (top row) and cool colors (bottom row) shows that solar reflectance (R) can be reduced significantly using special coatings with almost no change to the color
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Small, battery-powered evaporative coolers can be appropriate for personal cooling in arid climates (only)
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Some whole-house fans are equipped with an automatic drop-down cover to provide an air seal at the ceiling level when the fan is not in use
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Some whole-house fans use an automatic insulated cover achieve high R-values when the fan is not in use
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Sources of heat gain in a house include solar gains, infiltration, conduction through walls and roof, occupants, and internal equipment
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Sources of heat gain in a house include solar gains, infiltration, conduction through walls and roof, occupants, and internal equipment
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Tall annuals, like the sunflowers in this picture, can provide very effective shade in summer (left), provide a pleasant view from inside (right), and allow sun into the home in winter when the plants die back.
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The cool shingles on the right have been coated with a ceramic coating to reflect near-infrared radiation, resulting in a cooler roof as shown by these thermal images (red and yellow are hotter, green and blue are cooler).
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The existing dark tile roof on this home (top photo) was covered with a light -colored coating on day 6 (middle photo), resulting in a significant reduction in attic temperature and cooling energy consumption (bottom)
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The IR image on the right shows the sun is heating the southeast-facing wall of this concrete-block house to 36C (97F); this corner of the home would not be a good place for a cool room due to lack of shading and insulation
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The white TPO membrane roof on the row house on the right performs extremely well at reflecting solar energy and maintaining cool surface temperatures while the black EPDM membrane roof on the left heats up rapidly in the sunlight
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This depiction of a saddle installed window heat pump does not obstruct window use and provides fairly quiet 120 Volt operation
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This diagram provides a more realistic view of how a typical direct evaporative cooler operates
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This experimental earth tube is 220 ft long, 8 inches in diameter, and is buried 10 feet deep
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This experimental radiative/evaporative hybrid cooling system uses water to reject heat at night through radiation and evaporation
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This home uses light-colored standard paints and finishes on siding and roofing materials to reduce cooling loads without adding material cost.
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This infrared image shows little heat gain from north-facing double-pane windows with blinds, but significant heat output from computer monitors
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This MSHP operates with 120 volts power, has an EER of 18 Btu/Wh, uses about 800 W at full output, and operates remotely with a smart home control system
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This room has several passive and low-energy cooling features including a ceiling fan, fully operable French doors, window shading, an outdoor water feature, and light-colored hard-scaping.
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This search for metal roofing products on the CRRC Rated Roof Products Directory highlights the initial and 3-year aged SRI values for each product
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This simplified decision tree can help a homeowner or contractor assess how appropriate a cool roof or wall will be for a particular home
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Using outdoor misters or spray fountains can cool the outside air before it enters the house
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Vertical trellises and tall shrubs provide very effective shading to the east-facing wall of this home.
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Vines growing on vertical trellises, along with tall shrubs, provide very effective shade for the east side of this house.
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Wall surfaces having high solar reflectance and high thermal emittance will remain cooler when exposed to direct sunlight.
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Whole-house fans draw outside air through windows into the home and exhaust it into a vented attic
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Whole-house fans or wind-driven cross ventilation can be used to draw air across thermal mass for a night flush strategy