Environmental Stewardship Conference October 05, 2013 Energy Water and Sustainability (EWaS) Program
Agenda EWaS Overview History Who is EWaS? Mission EWaS Standards & Tools Energy Efficiency HVAC equipment Efficiency (and maintainability) Lighting and Controls Facility Automation Systems Building Envelope Optimization and Energy Modeling Indoor Environmental Quality Decoupled Ventilation CO2 monitoring and Control Daylighting Building Materials Cleaning Materials Water Efficiency Plumbing fixtures Irrigation Rainwater Collection Case Studies Baldwin ES McCallum School Wing Renovation
History At the start of the 2004 Bond Program, the Citizens Bond Advisory Committee (CBAC) encouraged the District to consider an enhanced environmental focus for new facilities, additions and renovations. The CBAC developed a list of sustainability issues that would help the Austin Independent School District (AISD) improve: Energy Efficiency Indoor Environmental Quality Water Efficiency The Energy Water and Sustainability (EWaS) program was created to help attain the sustainability goals identified by the 2004 CBAC.
Who is EWaS?. Center for Maximum Potential Building Systems EWaS ACR Engineering, Inc. Studio D Consulting + Design
EWaS Mission Develop a Culture of Sustainability in the Austin ISD Community. Make Austin ISD s buildings more energy and water efficient. Deliver buildings and classrooms with healthy indoor environmental quality. Establish permanent, environmentally sustainable procedures and construction standards.
EWaS Standards and Tools Sustainability Rating System AEGBP / LEED Sustainability Design & Construction Standards Energy Modeling Daylight Modeling EWaS Commissioning Energy Standard Green Housekeeping Program
New Schools 1. Austin Energy Green Building Program, 2-Star Rating 5-Star: 1 School 4-Star: 5 Schools 3-Star: 10 Schools 2-Star: 9 Schools 2. AEGBP 2-Star and LEED Silver Rating NCES-1 PAC NCES-2
Renovation (MEP) 1. Energy Efficient HVAC Replacements. 2. Enhanced HVAC Control Sequences. 3. Energy Efficient Lighting & Controls. 4. Water- Conserving Plumbing Systems. 5. Sustainable Materials and Techniques.
Energy Efficiency HVAC Equipment Maintenance Efficiency Rebates (1.3M) Controls
Energy Efficiency Lighting controls Occupancy Sensors Multiple Switches Direct / Indirect Fixtures
Energy Efficiency Facility Automation Systems Temp Monitoring Unit Status & Control
Energy Efficiency Building Envelope optimization & Energy Modeling Reflective Roof Building Orientation Wall & Roof Insulation Lights & HVAC Glazing & Shading
Indoor Environmental Decoupled Ventilation Quality After hours Operation Dehumidification Control Freeze Control Redundant Systems Energy Efficiency
Indoor Environmental Quality CO2 & RH Monitoring and Control Ensure IAQ Occupancy Based Ventilation
Indoor Environmental Daylighting Quality Classroom Depth Light Shelves Daylight Sensors Shading Devices Ceiling Height Glazing Orientation
Indoor Environmental Building Materials Quality Low VOC FSC Certification
Indoor Environmental Building Materials Quality Waste Diversification
Indoor Environmental Cleaning Materials Quality Non-Toxic Biodegradable
Water Use Reduction Water Efficiency Dual Flush Toilet Low flow Urinal
Water Efficiency Irrigation Plant Types (Native Species) Landscape Density Irrigation Type (Sprinkler or Drip)
Water Efficiency Rainwater Collection Challenging in Drought Conditions
Case Studies Baldwin Elementary School
Case Studies Baldwin Elementary School 3 Star AEGBP Site 7 Points Site Selection Municipal Infrastructure Preferred Topographic Orientation Transportation Alternatives Bicycle use Site Disturbance Protect or Restore Open Areas Site Additional Heat Island Roof Additional Heat Island Energy 4 Points Additional Energy Use Additional Commissioning Water 4 Points Up to 75% Irrigation Potable Use Reduce Up to 35% Potable Water Reduction
Case Studies Baldwin Elementary School 3 Star AEGBP Indoor Environmental Quality 14 Points Indoor Air Quality Monitoring Classroom Daylighting Views to Outside Thermal Comfort Green Housekeeping Low Environmental Impact Cleaning Indoor Pest Management Policy Low Emitting Materials Sealants Adhesives Insulation Composite Wood Condensing Surfaces & Water Intrusion Mold / Mildew Resistant Materials Construction Indoor Air Quality
Case Studies Baldwin Elementary School 3 Star AEGBP Materials & Resources 5 Points Up to 20% Recycled Content Up to 50% Texas Sourced Materials 50% Certified Wood
Case Studies McCallum High School Wing Renovation
Case Studies McCallum High School Wing Renovation Existing O.A. Intakes Typical Wing Mech Retrofit
Case Studies McCallum High School Wing Renovation New duct above ceiling Connect to existing piping through floor Existing O.A. Intakes Existing O.A. Intakes
Case Studies McCallum High School Wing Renovation Sound proof cabinets Accessible components Integral Controls Low velocity air filter Variable Speed Fan, no compressors