Energy Efficiency and Window to Wall Ratio

<p>In cold climates during the day. (B)</p> Signup and view all the answers

<p>The total area of windows divided by the gross exterior wall area. (C)</p> Signup and view all the answers

<p>It significantly increases the building’s cooling loads. (C)</p> Signup and view all the answers

<p>Balancing glazing benefits with heat gain impacts. (D)</p> Signup and view all the answers

<p>The surface area of the glazing compared to the walls. (C)</p> Signup and view all the answers

<p>They reduce energy consumption and utility costs. (C)</p> Signup and view all the answers

<p>Air-cooled chillers (B)</p> Signup and view all the answers

<p>78% (B)</p> Signup and view all the answers

<p>To reduce temperature difference and lower load on conditioning systems. (A)</p> Signup and view all the answers

<p>Increased wear and tear on components. (C)</p> Signup and view all the answers

<p>If the air conditioning system selected can use VSDs. (C)</p> Signup and view all the answers

<p>Fossil fuels (D)</p> Signup and view all the answers

<p>It helps in reducing the cooling and heating loads on a building. (B)</p> Signup and view all the answers

<p>To save embodied energy by reducing material quantity or finding alternatives (B)</p> Signup and view all the answers

<p>The embodied energy of the materials per square meter (B)</p> Signup and view all the answers

<p>Using the Window to Wall Ratio (WWR) indicated in the Energy tab (A)</p> Signup and view all the answers

<p>1616 MJ/m2 (C)</p> Signup and view all the answers

<p>Reducing material quantity or finding alternatives (A)</p> Signup and view all the answers

<p>It must cover more than 25% of the area. (B)</p> Signup and view all the answers

<p>Default embodied energy values. (D)</p> Signup and view all the answers

<p>By one of the two selected materials that is nearest in embodied energy. (C)</p> Signup and view all the answers

<p>EDGE Emerging Economies Construction Dataset. (D)</p> Signup and view all the answers

<p>Concrete blocks (C)</p> Signup and view all the answers

<p>Minimum and maximum thickness considerations. (A)</p> Signup and view all the answers

<p>To ensure consistency in evaluations. (A)</p> Signup and view all the answers

<p>It contains a complete list of materials available in the EDGE App. (A)</p> Signup and view all the answers

<p>To reduce cooling loads and improve thermal comfort (B)</p> Signup and view all the answers

<p>A higher SRI can help reduce the urban heat island effect (D)</p> Signup and view all the answers

<p>They are more effective at blocking radiant solar heat gain (B)</p> Signup and view all the answers

<p>SRI includes thermal emittance properties (C)</p> Signup and view all the answers

<p>Extending the service life of the finish (D)</p> Signup and view all the answers

<p>By projecting sun rays to a horizontal or vertical plane next to the window (C)</p> Signup and view all the answers

<p>The surface is more reflective than a standard white surface (A)</p> Signup and view all the answers

<p>The greenhouse effect (C)</p> Signup and view all the answers

<p>To displace fossil-fuel-based energy with renewable sources. (A)</p> Signup and view all the answers

<p>The renewable energy source must be located onsite. (B)</p> Signup and view all the answers

<p>Filing a request for energy savings not listed in EDGE measures. (C)</p> Signup and view all the answers

<p>A contract for off-site renewable energy must be signed. (C)</p> Signup and view all the answers

<p>It has no effect on operational CO2 savings. (C)</p> Signup and view all the answers

<p>Achieving at least 40% savings in energy consumption. (D)</p> Signup and view all the answers

<p>It helps create new clean energy resources on the grid. (C)</p> Signup and view all the answers

<p>Fossil fuel energy. (A)</p> Signup and view all the answers

The ratio of the total area of windows and glazing (including frames) to the total exterior wall area.

Sunlight can significantly impact a building's heating and cooling needs. Balancing light benefits with heat gain is crucial for energy efficiency.

Windows transmit heat at a much higher rate than walls.

Buildings with a WWR lower than 30% generally perform better in terms of energy efficiency and materials usage.

The design goal is to maximize daylight while minimizing unwanted heat transfer.

WWR is a key factor in designing buildings for optimal energy performance.

In warm climates, excessive glazing can increase cooling loads significantly.

In cold climates, windows can be beneficial for passive heating during the day.

A measure of how well a material reflects sunlight and emits heat.

A building design feature that reduces the amount of sunlight hitting the building.

An improvement measure in EDGE that considers the reflectivity of a roof or external wall.

A special glass that keeps out heat by blocking long-wavelength radiation.

The heating effect caused by sunlight trapped inside a building.

The effect of a city's built-up area being hotter than surrounding rural areas.

A measurement of how much sunlight is reflected by a surface.

How well a surface emits heat.

This measure aims to improve the electrical quality delivered to equipment, increasing its efficiency and output.

This measure rewards the use of renewable energy sources like solar, wind, or biomass to power a building. The source must be located on the project site.

This measure acknowledges the use of unique energy-saving strategies not covered by standard EDGE measures. Project approval is required.

This measure recognizes the purchase of renewable energy from an off-site source that is specifically allocated to the project. The project must have at least 40% energy savings to be eligible.

This measure aims to reduce electricity generated from fossil fuels.

On-site renewable energy sources decrease the reliance on electricity generated from fossil fuels, lessening carbon emissions.

Investing in off-site renewable energy helps create more clean energy sources, accelerating emission reductions in the energy sector.

This measure promotes the use of renewable energy, which is carbon-free energy generated from sources like solar, wind, and biomass.

A type of motor that adjusts its speed based on the actual demand, typically used in fans and pumps to optimize energy consumption.

A technology used in VSDs that changes the frequency of the electrical current supplied to the motor, controlling its speed.

A system used in ventilation to pre-condition the fresh air entering a building, reducing the temperature difference between the outside and inside air.

The efficiency rating of a space heating system, which measures how effectively it converts fuel into heat.

The typical efficiency rating of a gas-fired hot water boiler, assumed as the baseline for comparing heating systems.

The difference in efficiency between a chosen heating system and the Base Case.

A method to calculate the potential energy savings by incorporating VSDs into the air conditioning system.

The use of fossil fuels for space heating in buildings, often considered a major energy consumption area.

In EDGE, for building elements with multiple materials covering more than 25% of the area, a second material can be selected. It is marked with its percentage (%) area in the total project. Any additional materials beyond these two are represented by the closest material in terms of embodied energy.

EDGE provides default embodied energy values for materials based on the EDGE Emerging Economies Construction Dataset. This ensures consistent and comparable material evaluations across projects. Project designers may not adjust these values.

In EDGE, the embodied energy of a material is the amount of energy used in its production, transportation, and installation.

Concrete blocks are generally considered a more sustainable building material compared to stainless steel and brick. This is because they often have a lower embodied energy and carbon footprint.

The EDGE Materials Reference Guide provides a comprehensive list of materials and their embodied energy values. This resource supports informed material selection for sustainable building projects.

Materials are categorized and visually represented in the EDGE Materials Reference Guide.

Each material in the EDGE Materials Reference Guide includes information on its embodied energy, characteristics, and constraints.

The default thickness of a material is used for comparing embodied energy between materials. This ensures uniform comparisons while allowing for flexible design adjustments based on project requirements.

Embodied energy is the energy used in the manufacturing, transportation, and installation of building materials. EDGE uses Embodied Energy (EE) to measure the environmental impact of materials.

EDGE calculates embodied energy for various aspects of your building, such as walls, roofs, windows and insulation. The calculations are used to assess the environmental impact of your design choices.

EDGE helps you minimize the environmental impact of your building by: 1. Reducing the quantity of materials used, 2. Finding alternative, more sustainable materials. These strategies help to reduce the embodied energy in your building.

The Energy tab in EDGE lets you select roof U-values, which then automatically trigger insulation measures. This helps you understand the connection between roof insulation and energy efficiency.

The amount of windows in your building is a significant factor in its energy efficiency. In EDGE, the Window to Wall Ratio (WWR), which you input in the Energy tab, automatically calculates the embodied energy of your window frames and glazing.