ASHRAE Journal - March 2012 - 98

iaq applications

public policy & iaq
I
By steven J. Emmerich, Member ASHRAE

n July 2011, ASHRAE’s Board of Directors approved the publication of a revised position document on indoor air quality. The purpose of

the IAQ Position Document is to inform the ASHRAE membership and the public of the importance of IAQ as a public health issue.
For the IAQ Position Document, the term indoor air quality (IAQ) represents the indoor air concentrations of pollutants that are known or suspected to affect people’s comfort, environmental satisfaction, health, work or school performance. The scope of the IAQ Position Document is to: • Summarize current state of knowledge; • Include all built environments except industrial; • Include both health and comfort; • Recommend research needed to better characterize emissions, exposures, health effects, and mitigation efforts; • Discuss implementation of current knowledge through codes, standards and guidelines; and • Recommend needed education efforts and interaction with other relevant public and private organizations. The executive summary of ASHRAE’s 2011 Position Document on Indoor Air Quality is reproduced here, and the full document may be found (along with ASHRAE’s other position documents) at www.ashrae.org/aboutus/page/335. which were reflected in a new position document that was published in 2001 and reaffirmed in 2005. Once again, advancing knowledge (such as new knowledge on airborne infectious diseases and other microbiological hazards), a greater interest in non-commercial building environments (including residential and transportation environments), and emphasis of other new issues (such as consideration of IAQ in sustainable buildings during a time of predicted global climate change) warrants a significant revision to the position document. IAQ directly impacts occupant health, comfort and work performance. People in buildings frequently report discomfort and building-related health symptoms, and sometimes develop building-related illnesses. In recent decades, significant and substantial research has been conducted on the nature, extent and causes of these comfort and health effects and scientific studies have determined that these health effects and discomfort are associated with characteristics of buildings, HVAC systems and the indoor environment. In contrast, providing superior IAQ can improve health, work performance, and school performance, as well as reduce health care costs, and consequently be a source of substantial economic benefits. While some see energy efficiency and IAQ as contradictory goals, an integrated design can lead to high performing buildings that are both energy efficient and have good IAQ. Passive design features (i.e., the architectural and envelope
ashrae.org

Executive summary
ASHRAE published a position paper on IAQ in 1989 asserting the importance of IAQ as a public health issue. Since 1989, accrued knowledge allowed updated statements of far greater certainty about health effects, exposures of concern, and the broad approach that must be adopted toward IAQ,
98 ASHRAE Journal

aspects) can be optimized before active design strategies (HVAC systems) are designed for thermal conditioning and source control can be implemented as the fundamental approach to reducing contaminant levels inside buildings before exposure control, via ventilation and air cleaning, is designed for IAQ. Furthermore, as the world moves rapidly toward constructing high-performance and sustainable buildings, it should be recognized that sustainable/net zero energy building efforts will fail if they achieve energy targets but cause significant health or comfort problems for occupants or impede occupant performance in ways that inhibit the building from attaining the goals for which it was built. ASHRAE has a direct interest and concern with IAQ. Designers, builders, and operators of buildings, who constitute much of the ASHRAE membership, have a large influence on and responsibility for IAQ and look to ASHRAE for guidance; thus ASHRAE has a responsibility to advance the IAQ arts and sciences. ASHRAE’s position at the present is that: • IAQ has important impacts on people’s comfort, environmental satisfaction, health, and work performance, and is thereby central to ASHRAE’s purpose. • The health and economic benefits attainable from improved IAQ are uncertain in magnitude but substantial from a national economic perspective and from the perspective of an individual building owner, operator or occupant. • IAQ and building energy performance are substantially linked and these linkages must be considered starting at the very earliest stages and throughout the processes of building design, retrofit, and renovation. • It is critical to maintain acceptable IAQ as significant changes are made to building design and operation to dramatically reduce energy consumption in response to the threat of global climate change.
March 2012



ASHRAE Journal - March 2012

Table of Contents for the Digital Edition of ASHRAE Journal - March 2012

ASHRAE Journal - March 2012
Contents
Commentary
Show Coverage
Meetings and Shows
Feature Articles
ASHRAE’s Best: 2012 Technology Awards
Total Energy Wheel Control in a Dedicated OA System
Optimizing Design & Control of Chilled Water Plants Part 4: Chiller & Cooling Tower Selection
Improving DHW System Performance
Technology Award Case Studies:
Ice Rink Uses CO2 System
Standing Columns
Building Sciences
Emerging Technologies
Refrigeration
Special Products
IAQ Applications
People
Products
Classified Advertising
Advertisers Index
ASHRAE Journal - March 2012 - Intro
ASHRAE Journal - March 2012 - ASHRAE Journal - March 2012
ASHRAE Journal - March 2012 - Cover2
ASHRAE Journal - March 2012 - 1
ASHRAE Journal - March 2012 - 2
ASHRAE Journal - March 2012 - Contents
ASHRAE Journal - March 2012 - Commentary
ASHRAE Journal - March 2012 - 5
ASHRAE Journal - March 2012 - Show Coverage
ASHRAE Journal - March 2012 - 7
ASHRAE Journal - March 2012 - 8
ASHRAE Journal - March 2012 - 9
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ASHRAE Journal - March 2012 - 24
ASHRAE Journal - March 2012 - 25
ASHRAE Journal - March 2012 - Meetings and Shows
ASHRAE Journal - March 2012 - 27
ASHRAE Journal - March 2012 - ASHRAE’s Best: 2012 Technology Awards
ASHRAE Journal - March 2012 - 29
ASHRAE Journal - March 2012 - 30
ASHRAE Journal - March 2012 - 31
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ASHRAE Journal - March 2012 - 37
ASHRAE Journal - March 2012 - Ice Rink Uses CO2 System
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ASHRAE Journal - March 2012 - 45
ASHRAE Journal - March 2012 - Total Energy Wheel Control in a Dedicated OA System
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ASHRAE Journal - March 2012 - Optimizing Design & Control of Chilled Water Plants Part 4: Chiller & Cooling Tower Selection
ASHRAE Journal - March 2012 - 61
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ASHRAE Journal - March 2012 - Improving DHW System Performance
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ASHRAE Journal - March 2012 - Building Sciences
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ASHRAE Journal - March 2012 - Emerging Technologies
ASHRAE Journal - March 2012 - 89
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ASHRAE Journal - March 2012 - 91
ASHRAE Journal - March 2012 - 92
ASHRAE Journal - March 2012 - 93
ASHRAE Journal - March 2012 - Refrigeration
ASHRAE Journal - March 2012 - 95
ASHRAE Journal - March 2012 - Special Products
ASHRAE Journal - March 2012 - 97
ASHRAE Journal - March 2012 - IAQ Applications
ASHRAE Journal - March 2012 - 99
ASHRAE Journal - March 2012 - People
ASHRAE Journal - March 2012 - 101
ASHRAE Journal - March 2012 - Products
ASHRAE Journal - March 2012 - 103
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ASHRAE Journal - March 2012 - 108
ASHRAE Journal - March 2012 - 109
ASHRAE Journal - March 2012 - Classified Advertising
ASHRAE Journal - March 2012 - 111
ASHRAE Journal - March 2012 - Advertisers Index
ASHRAE Journal - March 2012 - Cover3
ASHRAE Journal - March 2012 - Cover4
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