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Energy Hierarchy and Building Design

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Energy Hierarchy and Building Design Energy Hierarchy and Building Design Andrew Cruse, AIA LEED AP Assistant Professor of Architecture Ohio State University 2 O O R R Image: Transsolar Building Sustainability Renewable Codes Standards Technologies 3 4 Waste Hierarchy 5 CONVER T CONTRO L CONSERV E Waste Hierarchy Energy Hierarchy 6 CONVERT Get energy from renewable sources CONVERT CONTROL Make sure energy that is being used is used efficiently through a review of Mechanical and Electrical Equipment CONTROL CONSERV PErevent unnecessary energy use through Passive Climate Control Strategies and Behavioral Strategies CONSERV E Energy Hierarchy 7 CONVER T CONTROL CONSERVE Passive Building and Behavioral Strategies • largest impact with the least expense • pre-schematic design choices about building siting and orientation, passive solar and ventilation CONSERV options, landscape choices. • schematic design choices about the building enve- lope, both opaque and transparent walls. E • building occupant education and awareness Energy Hierarchy 8 Passive Climate Control System typically does not rely on purchased energy and uses basic elements of the building such as windows, walls, floors, etc. Active Climate Control Systems typically relies on purchased energy and dedicated equipment within the building (ducts, motors, wires, etc.) CONSERVE 9 Typical Project Potential for Phases Impact CONSERVE 10 Urba Suburba Rura n n l Context matters CONSERVE 11 The Environmental Value of Building Reuse - National Trust for Historic Preservation New Construction versus Rehabilitation CONSERVE 12 Macroclimate - Köppen Climate Microclimate - “This is a hill in Ohio.” House Beautiful, October Classification 1949 Climate exists at many scales - Macro to Micro CONSERVE 13 Control the site's microclimate CONSERVE 14 Victor Olgyay Design With Climate, 1963 Control the building's massing CONSERVE 15 SHGC and U-value of R-Value and air-tightness for windows Walls Understand your house's thermal envelope CONSERVE 16 Energy Audit for Existing Homes CONSERVE 17 Jimmy Carter, Proposed Energy Policy, April 18, 1977 Behavioral Changes CONSERVE 18 CONVERT CONTROL Mechanical and Electrical Equipment • allows for reduced energy consumption with- out necessarily changing the behavior of build- ing occupants CONTROL • design development or building retrofit choices • Includes energy efficient HVAC equipment, appliances, lighting and building controls systems CONSERV E 19 Passive Climate Control System typically does not rely on purchased energy and uses basic elements of the building such as windows, walls, floors, etc. Active Climate Control Systems typically relies on purchased energy and dedicated equipment within the building (ducts, motors, wires, etc.) CONTROL 20 EPA Fuel Economy and Environment for Cars in the Building Energy Rating for buildings in the US EU CONTROL Fuel Economy Guides 21 AFUE Rating SEER Rating Energy Star Rating Annual Fuel Utilization Seasonal Energy Efficiency Efficiency Rate Ratings for the consumer products-such as re- For comubsion equipment like For cooling output from air frigerators, dish washers, dryers, etc- furnaces, boilers and water conditioning equipment. suggesting they use less energy than other heaters. appliances. CONTROL HVAC Equipment & Appliances 22 CONTROL Lighting Equipment 23 CONTROL Building Controls 24 CONTROL Role of Energy Codes and the Limits of Efficiency 25 CONVERT Renewables • converts natural sources into energy • examples include PV, solar thermal and renew- able energy credits CONVERT CONTROL CONSERV E 26 Perez et. al. A fundamental look at energy reserves for the planet, 2009 CONVERT Potential of Solar Energy as an Energy Source 27 CONVERT Photovoltaic and Solar Thermal Equipment 28 CONVERT Renewables • converts natural sources into energy • examples include PV, solar thermal and renewable energy credits CONTROL CONVERT Mechanical and Plumbing Equipment • allows for reduced energy consumption without necessarily changing the behavior of building occupants • design development or building retrofit choices • Includes energy efficient HVAC equipment, CONTROL appliances, lighting and building controls systems CONSERVE Passive Building and Behavioral Strategies • largest impact with the least expense • pre-schematic design choices about building CONSERV siting and orientation, passive solar and ventilation options, landscape choices. • schematic design choices about the building E enve- lope, both opaque and transparent walls. • building occupant education and awareness.
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