High Performance High Performance Building Congressional Building Congressional

Caucus CoalitionCaucus Coalition

December 14, 2010December 14, 2010

Thomas H. Phoenix, P.E. LEED APThomas H. Phoenix, P.E. LEED AP

What is ASHRAE?What is ASHRAE?

The American Society of Heating, The American Society of Heating, Refrigerating and Air Conditioning Refrigerating and Air Conditioning

EngineersEngineers

What is ASHRAE?What is ASHRAE?55,000 Members

175 Chapters

120 Countries

ASHRAE Mission ASHRAE Mission StatementStatement

“To advance the arts and sciences of heating, ventilating, air conditioning and

refrigerating to serve humanity and promote a sustainable world”

Building Performance MetricsBuilding Performance Metrics Steering Committee Steering Committee

Performance Measurement Protocols Performance Based Energy Benchmarks Carbon Emissions Calculation Tools High Performance Buildings Database/DASH PMP Best Practices Guide

“You will never know if you got there if you don’t know where you are going..”

Building Performance MetricsBuilding Performance Metrics

The ChallengeThe ChallengeWe need a standardized, consistent set

of measurement protocols to:o Substantiate claims of performanceo Facilitate appropriate, rigorous, and

reliable comparison of measured performance

o Provide feedback to designers and building operators

Why is it measured? Why is it measured? The objectiveThe objective What is to be measured and how is it to What is to be measured and how is it to

be measured? be measured? The metricThe metric What are the appropriate benchmarks? What are the appropriate benchmarks?

Performance Evaluation/BenchmarkingPerformance Evaluation/Benchmarking

Performance Measurement Protocols for Commercial Buildings

Published as ASHRAE Special Publication in May 2010Published as ASHRAE Special Publication in May 2010

Measured ProtocolsMeasured Protocols

EnergyEnergy Potable Water UsagePotable Water Usage Indoor Environmental QualityIndoor Environmental Quality

o Thermal ComfortThermal Comforto Lighting/DaylightingLighting/Daylightingo Indoor Air QualityIndoor Air Qualityo AcousticsAcoustics

Level of Protocol MeasurementLevel of Protocol Measurement

Level 1 – Basic (Indicative) Level 2 – Intermediate (Diagnostic) Level 3 – Advanced (Investigative)

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

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

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

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

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 EffortsContinuing 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.

Questions?Questions?