ASTM D6245-07
(Guide)Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
SCOPE
1.1 This guide describes how measured values of indoor carbon dioxide (CO2) concentrations can be used in evaluations of indoor air quality and building ventilation.
1.2 This guide describes the determination of CO 2 generation rates from people as a function of body size and level of physical activity.
1.3 This guide describes the experimentally-determined relationship between CO2 concentrations and the acceptability of a space in terms of human body odor.
1.4 This guide describes the following uses of indoor CO2 concentrations to evaluate building ventilation-mass balance analysis to determine the percent outdoor air intake at an air handler, the tracer gas decay technique to estimate whole building air change rates, and the constant injection tracer gas technique at equilibrium to estimate whole building air change rates.
1.5 This guide discusses the use of continuous monitoring of indoor and outdoor CO2 concentrations as a means of evaluating building ventilation and indoor air quality.
1.6 This guide discusses some concentration measurement issues, but it does not include or recommend a method for measuring CO 2 concentrations.
1.7 This guide does not address the use of indoor CO 2 to control outdoor air intake rates.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D6245 – 07
Standard Guide for
Using Indoor Carbon Dioxide Concentrations to Evaluate
1
Indoor Air Quality and Ventilation
This standard is issued under the fixed designation D6245; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1356 Terminology Relating to Sampling and Analysis of
Atmospheres
1.1 This guide describes how measured values of indoor
D3249 Practice for General Ambient Air Analyzer Proce-
carbon dioxide (CO ) concentrations can be used in evalua-
2
dures
tions of indoor air quality and building ventilation.
E741 Test Method for Determining Air Change in a Single
1.2 This guide describes the determination of CO genera-
2
Zone by Means of a Tracer Gas Dilution
tion rates from people as a function of body size and level of
2.2 Other Documents:
physical activity.
ASHRAE Standard 62.1 Ventilation for Acceptable Indoor
1.3 This guide describes the experimentally-determined re-
3
Air Quality
lationship between CO concentrations and the acceptability of
2
a space in terms of human body odor.
3. Terminology
1.4 This guide describes the following uses of indoor CO
2
3.1 Definitions—For definitions and terms used in this
concentrations to evaluate building ventilation–mass balance
guide, refer to Terminology D1356.
analysis to determine the percent outdoor air intake at an air
3.2 Definitions of Terms Specific to This Standard:
handler, the tracer gas decay technique to estimate whole
3.2.1 air change rate, n—the total volume of air passing
building air change rates, and the constant injection tracer gas
through a zone to and from the outdoors per unit time, divided
technique at equilibrium to estimate whole building air change
–1 –1 4
by the volume of the zone (s ,h ).
rates.
3.2.2 bioeffluents, n—gases emitted by people as a product
1.5 This guide discusses the use of continuous monitoring
of their metabolism that can result in unpleasant odors.
of indoor and outdoor CO concentrations as a means of
2
3.2.3 single-zone, n—an indoor space, or group of spaces,
evaluating building ventilation and indoor air quality.
wherein the CO concentration is uniform and that only
2
1.6 This guide discusses some concentration measurement
exchanges air with the outdoors.
issues, but it does not include or recommend a method for
measuring CO concentrations.
2
4. Summary of Guide
1.7 This guide does not address the use of indoor CO to
2
4.1 When investigating indoor air quality and building
control outdoor air intake rates.
ventilation, a number of tools are available. One such tool is
1.8 This standard does not purport to address all of the
the measurement and interpretation of indoor and outdoor CO
2
safety concerns, if any, associated with its use. It is the
concentrations. Using CO concentrations to evaluate building
2
responsibility of the user of this standard to establish appro-
indoor air quality and ventilation requires the proper use of the
priate safety and health practices and determine the applica-
proceduresinvolved,aswellasconsiderationofseveralfactors
bility of regulatory limitations prior to use.
related to building and ventilation system configuration, occu-
2. Referenced Documents pancy patterns, non-occupant CO sources, time and location
2
2 of air sampling, and instrumentation for concentration mea-
2.1 ASTM Standards:
surement. This guide discusses ways in which CO concentra-
2
tions can be used to evaluate building indoor air quality and
1
This guide is under the jurisdiction of ASTM Committee D22 on Air Quality
ventilation.
and is the direct responsibility of Subcommittee D22.05 on Indoor Air.
4.2 Section 6 discusses the rate at which people generate
Current edition approved Oct. 1, 2007. Published November 2007. Originally
CO and the factors that affect this rate.
approved in 1998. Last previous edition approved in 2002 as D6245 – 98(2002). 2
DOI: 10.1520/D6245-07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Heating, Refrigerating, and Air-
Standards volume information, refer to the standard’s Document Summary page on Conditioning Engineers, Inc., 1791 Tullie Circle, NE, Atlanta, GA 30329.
4 -1
the ASTM website. Acommon way of expressing air change rate units is h = air changes per hour.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6245 – 07
4.3 Section 7 discusses the use of indoor concentrations of
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6245–98 (Reapproved 2002) Designation: D 6245 – 07
Standard Guide for
Using Indoor Carbon Dioxide Concentrations to Evaluate
1
Indoor Air Quality and Ventilation
This standard is issued under the fixed designation D 6245; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This guide describes how measured values of indoor carbon dioxide (CO ) concentrations can be used in evaluations of
2
indoor air quality and building ventilation.
1.2 This guide describes the determination of CO generation rates from people as a function of body size and level of physical
2
activity.
1.3 This guide describes the experimentally-determined relationship between CO concentrations and the acceptability of a
2
space in terms of human body odor.
1.4 ThisguidedescribesthefollowingusesofindoorCO concentrationstoevaluatebuildingventilation–massbalanceanalysis
2
to determine the percent outdoor air intake at an air handler, the tracer gas decay technique to estimate whole building air change
rates, and the constant injection tracer gas technique at equilibrium to estimate whole building air change rates.
1.5 This guide discusses the use of continuous monitoring of indoor and outdoor CO concentrations as a means of evaluating
2
building ventilation and indoor air quality.
1.6 Thisguidediscussessomeconcentrationmeasurementissues,butitdoesnotincludeorrecommendamethodformeasuring
CO concentrations.
2
1.7 This guide does not address the use of indoor CO to control outdoor air intake rates.
2
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1356Terminology Relating to Sampling and Analysis of Atmospheres Test Method for Evaluation of Diesel Engine Oils in
T-8 Diesel Engine
D 3249Practice for GeneralAmbientAirAnalyzer Procedures Test Method for Evaluation of Diesel Engine Oils in T-8 Diesel
Engine
E 741Test Method for DeterminingAir Change in a Single Zone by Means of Tracer Gas Dilution Test Method for Evaluation
of Diesel Engine Oils in T-8 Diesel Engine
2.2 Other Documents Other Documents:
ASHRAEStandard 62 Ventilation forAcceptable IndoorAir QualityASHRAE Standard 62.1 Ventilation forAcceptable Indoor
3
Air Quality
3. Terminology
3.1 Definitions— For definitions and terms used in this guide, refer to Terminology D 1356.
3.2 Definitions of Terms Specific to This Standard:
1
This guide is under the jurisdiction of ASTM Committee D22 on Sampling and Analysis of Atmospheres and is the direct responsibility of Subcommittee D22.05 on
Indoor Air.
Current edition approved March 10, 1998. Published May 1998.
1
This guide is under the jurisdiction of ASTM Committee D22 on Air Quality and is the direct responsibility of Subcommittee D22.05 on Indoor Air.
Current edition approved Oct. 1, 2007. Published November 2007. Originally approved in 1998. Last previous edition approved in 2002 as D 6245 - 98(2002).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc., 1791 Tullie Circle, NE, Atlanta, GA 30329.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6245–07
3.2.1 air change rate, n—the total volume of air passing through a zone to and from the outdoors per unit time, divided by the
–1 –1 4
volume of the zone (s ,h ).
3.2.2 bioeffluents, n—gases emitted by people as a product of their metabolism that can result in unpleasant odors.
3.2.3 single-zone, n—an indoor space, or group of spaces, wherein the CO concentration is uniform and that only exchanges
2
air with the outdoors.
4. Summary of Guide
4.1 When investigating indoor air quality and building ventilation, a number of tools are available to understand the building
beingstudied.available.Onesuchtoolistheme
...
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