ASHRAE Journal - January 2015 - 66
TECHNICAL FEATURE
Measurement
Of Commercial Building
Performance
BY BRUCE D. HUNN, PH.D., FELLOW ASHRAE; AND JIM BOCHAT, MEMBER ASHRAE
The 2010 ASHRAE Publication Performance Measurement Protocols for Commercial
Buildings (PMP)1 describes what to measure, how it is to be measured, and how
often it is to be measured to quantitatively assess the performance of commercial
buildings. Representatives of these measures were tested by applying them to the
newly renovated ASHRAE Headquarters Building in Atlanta.2 Since then it was
determined through field tests3,4 and user feedback that more procedures-oriented
protocols were needed.
Performance Measurement Protocols for Commercial
Buildings: Best Practices Guide, published in 2012,5 implements the protocols within the context of existing building commissioning (EBCx), providing specific guidance
for performance improvement. It provides processes
and tools to make measurement, verification, and
improvement clearer and easier so as to improve building performance throughout its service life. This article
describes how these best practices are applied.
Measurement and Improvement Process
Differentiating Levels of Performance
Performance improvement in Best Practices is achieved
through a three-level process (that differs somewhat
from those in PMP), which matches the level of cost
and intensity of effort, and are to be implemented
sequentially.
1. Basic Evaluation (indicative level) uses observations of building characteristics, perceptions of
occupants, and data from utility bills to characterize
performance.
2. Diagnostic Measurement (diagnostic level) uses
physical measurements to diagnose problems indicated
at the Basic Evaluation level, benchmarked against
physical standards, to identify how performance can be
improved.
3. Advanced Analysis (investigative level) uses the
results of the first two levels, plus results of professional
investigative processes, to identify specific actions for
performance improvement.
These levels provide alternatives for building owners depending on the size, complexity, and need for
their buildings. They correspond to the detail, rigor,
and accuracy of the measurements required to meet
Bruce D. Hunn, Ph.D., is retired director of technology, ASHRAE, and an energy consultant in Raleigh, N.C. Jim Bochat is president of Commissioning Concepts in Phoenix.
66
ASHRAE JOURNAL
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JAN UARY 2015
ASHRAE Journal - January 2015
Table of Contents for the Digital Edition of ASHRAE Journal - January 2015
Contents
ASHRAE Journal - January 2015 - BB1
ASHRAE Journal - January 2015 - BB2
ASHRAE Journal - January 2015 - Cover1
ASHRAE Journal - January 2015 - Cover2
ASHRAE Journal - January 2015 - 1
ASHRAE Journal - January 2015 - 2
ASHRAE Journal - January 2015 - Contents
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ASHRAE Journal - January 2015 - Cover3
ASHRAE Journal - January 2015 - Cover4
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