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Presentation:

1 Building Science for Dry Climates - Introduction

1 Building Science for Dry Climates Title Slide
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A 5,000- 6,000 Btu/hr air conditioner drawing about 500 watts can be installed in one window of a designated cool room (it is important that the installation is insulated and well-sealed

A 5,000- 6,000 Btu/hr air conditioner drawing about 500 watts can be installed in one window of a designated cool room (it is important that the installation is insulated and well-sealed
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A battery storage system can provide reliable back-up power during a grid power outage

A battery storage system can provide reliable back-up power during a grid power outage
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A cool roof utilizes materials with high solar reflectance and thermal emittance to reflect solar energy and reduce heat gain to the home

A cool roof utilizes materials with high solar reflectance and thermal emittance to reflect solar energy and reduce heat gain to the home
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A cool room should have low enough heat gains to be easily cooled by a small single-zone cooling system such as a mini-split or a window air-conditioner as shown here

A cool room should have low enough heat gains to be easily cooled by a small single-zone cooling system such as a mini-split or a window air-conditioner as shown here
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A Corsi-Rosenthal Box is a highly effective DIY air cleaner made of easy to obtain materials such as HVAC filters, a box fan, cardboard, and tape

A Corsi-Rosenthal Box is a highly effective DIY air cleaner made of easy to obtain materials such as HVAC filters, a box fan, cardboard, and tape
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A dense concentration of buildings and pavement can create the Urban Heat Island Effect, where local temperatures can be several degrees higher than the surrounding areas

A dense concentration of buildings and pavement can create the Urban Heat Island Effect, where local temperatures can be several degrees higher than the surrounding areas
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A mini-split air-conditioning system can be a highly effective low-energy approach to provide cooling to one designated zone in the house

A mini-split air-conditioning system can be a highly effective low-energy approach to provide cooling to one designated zone in the house
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A professional tree survey should be made prior to construction to assess the health and usefulness of each tree surrounding the future home and to determine which trees on a building site should be preserved.

A professional tree survey should be made prior to construction to assess the health and usefulness of each tree surrounding the future home and to determine which trees on a building site should be preserved
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A reversible window fan can operate via thermostatic or remote control and can selectively exhaust air or bring in outdoor air

A reversible window fan can operate via thermostatic or remote control and can selectively exhaust air or bring in outdoor air
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A screened-in porch will protect windows from rain, provide shade, and allow more airflow through windows than window screens would

A screened-in porch will protect windows from rain, provide shade, and allow more airflow through windows than window screens would
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A shallow, open floor plan allows free flow of cross ventilation through the house

A shallow, open floor plan allows free flow of cross ventilation through the house
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A typical Las Vegas hot-dry climate home made of wood frame construction and insulated with R-25 expanded polystyrene externally over a drainage plane, with an unvented wood frame insulated attic and roof assembly.

A typical Las Vegas hot-dry climate home made of wood frame construction and insulated with R-25 expanded polystyrene externally over a drainage plane, with an unvented wood frame insulated attic and roof assembly.
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A typical Las Vegas hot-dry climate home uses stucco siding and a tile roof.

A typical Las Vegas hot-dry climate home uses stucco siding and a tile roof.
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A variety of battery-powered fans can be used for a cool room without electric power; most charge off a USB charger so they can be solar charged

A variety of battery-powered fans can be used for a cool room without electric power; most charge off a USB charger so they can be solar charged
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Air speeds generated by a typical ceiling fan are in the ideal range for providing occupant cooling without causing disruption

Air speeds generated by a typical ceiling fan are in the ideal range for providing occupant cooling without causing disruption
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Airflow can be directed across thermal mass in the ceiling, floor, or elsewhere inside the home through various window and louver configurations

Airflow can be directed across thermal mass in the ceiling, floor, or elsewhere inside the home through various window and louver configurations
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All populated regions in the United States can experience an extreme heat event, whether northern or southern, humid or dry, or urban or rural

All populated regions in the United States can experience an extreme heat event, whether northern or southern, humid or dry, or urban or rural
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An innovative U-shaped heat pump offers SEER 15 efficiency and operation with smart phones

An innovative U-shaped heat pump offers SEER 15 efficiency and operation with smart phones
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An NFRC glazing system energy performance label will report U-factor, solar heat gain coefficient, visible transmittance, and air leakage; if the window is ENERGY certified, the ENERGY STAR label will be located next to the NFRC label

An NFRC glazing system energy performance label will report U-factor, solar heat gain coefficient, visible transmittance, and air leakage; if the window is ENERGY certified, the ENERGY STAR label will be located next to the NFRC label
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Annual average temperatures have increased across North America when comparing the present day to the first half of the last century, and are projected to increase for mid-century and end-of-century relative to the near-present

Annual average temperatures have increased across North America when comparing the present day to the first half of the last century, and are projected to increase for mid-century and end-of-century relative to the near-present
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Architectural shading can include large eaves, a porch roof, a well-designed pergola, or other building elements

Architectural shading can include large eaves, a porch roof, a well-designed pergola, or other building elements
Presentation:

ASES March Webinar: Uncoupling Solar Light and Heat in Passive Solar Design

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Battery-powered ceiling fans can run for eight or more hours

Battery-powered ceiling fans can run for eight or more hours