Loading in 2 Seconds...
Loading in 2 Seconds...
High Performance Building Congressional Caucus Coalition. December 14, 2010. Thomas H. Phoenix, P.E. LEED AP. What is ASHRAE?. The American Society of Heating, Refrigerating and Air Conditioning Engineers. What is ASHRAE?. 55,000 Members 175 Chapters 120 Countries.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
High Performance Building Congressional Caucus Coalition December 14, 2010 Thomas H. Phoenix, P.E. LEED AP
What is ASHRAE? The American Society of Heating, Refrigerating and Air Conditioning Engineers
What is ASHRAE? 55,000 Members 175 Chapters 120 Countries
ASHRAE Mission Statement “To advance the arts and sciences of heating, ventilating, air conditioning and refrigerating to serve humanity and promote a sustainable world”
Building Performance Metrics Steering Committee • Performance Measurement Protocols • Performance Based Energy Benchmarks • Carbon Emissions Calculation Tools • High Performance Buildings Database/DASH • PMP Best Practices Guide
Building Performance Metrics “You will never know if you got there if you don’t know where you are going..”
The Challenge We need a standardized, consistent set of measurement protocols to: • Substantiate claims of performance • Facilitate appropriate, rigorous, and reliable comparison of measured performance • Provide feedback to designers and building operators
Characteristics of Protocols • Why is it measured? The objective • What is to be measured and how is it to be measured? The metric • What are the appropriate benchmarks? Performance Evaluation/Benchmarking
ASHRAE/USGBC/CIBSE Performance Measurement Protocols for Commercial Buildings Published as ASHRAE Special Publication in May 2010
Measured Protocols • Energy • Potable Water Usage • Indoor Environmental Quality • Thermal Comfort • Lighting/Daylighting • Indoor Air Quality • Acoustics
Level of Protocol Measurement • Level 1 – Basic (Indicative) • Level 2 – Intermediate (Diagnostic) • Level 3 – Advanced (Investigative)
Energy Use • Objectives • Characterize whole-building energy use and cost • Establish energy performance ranking • Estimate energy savings potentials • Metrics • Catalog of basic building characteristics • Annual whole-building energy use by source • Annual energy use and cost indices (per unit area) • Benchmarks • Energy Star rating (by building type, climate zone) • Energy Performance of Buildings Directive rating
Potable Water Use • Objectives • Characterize and rate whole-building water use/ cost • Aggregate uses deposited in wastewater and those not deposited in wastewater (e.g. landscaping) • Identify water savings potentials • Metrics • Monthly and annual metered water use and cost • Monthly and annual water use and cost indices (per unit area and occupant) • Benchmarks • DOE/FEMP indices by building type • European indices by building type
IEQ - Thermal Comfort • Objectives • Determine and rate occupant satisfaction • Identify thermal comfort problems to be corrected • Metrics • Evaluate complaint logs • Conduct occupant and operator surveys • Spot measure temperature, rh, MRT, airspeed (optional - to determine causes of problems) • Benchmarks • CBE or BUS survey databases
IEQ - Indoor Air Quality • Objectives • Determine and rate occupant satisfaction • Observe condition of building and HVAC system • Evaluate compliance with ASHRAE Standard 62.1 • Metrics • Evaluate complaint logs, conduct occupant surveys • Determine if OA quality is poor (NAAQ Standards) • If combustion sources, spot measure CO levels • Measure outside air flows (CO2 levels as indicator) • Benchmarks • CBE or BUS survey databases • Standard 62.1 OA flows and distribution
IEQ - Lighting Quality • Objectives • Determine and rate occupant satisfaction • Identify problems to be corrected • Metrics • Conduct occupant and operator surveys • Evaluate lighting checklist to identify problems • Spot measurements of illuminance • Benchmarks • CBE or BUS survey databases • IESNA and/or EN 12464 illuminance levels by space type
Continuing Efforts • ASHRAE Building EQ Labeling Program • Performance Metrics Best Practices Guide – est. late 2011 • Building Energy Modeling Conference – April 4-6, 2011 • Web-based Educational Tools – ASHRAE Headquarters, etc.