ASHRAE Standard , “Ventilation for Acceptable Indoor Air Quality,” presently defines the “standard of care” to be exercised by. ASHRAE Standard (Standard ) “Ventilation for Acceptable Indoor. Air Quality” is the new heating, ventilating, and air-. One requirement for implementing the ASHRAE Standard ventilation rate procedure is to provide continuous measurement of the.
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These building characterizations are based on survey and energy metering data and represent average or typical ztandard and operation practices and mechanical system types.
Ventilation for Acceptable Indoor Air Quality 5.
Reports, articles and other documents harvested from the Office of Scientific and Technical Information. Ninomura, State of Washington Francis J. With further development it could be a very useful design tool for evaluating trade-offs between increased ventilation, source management, and air cleaning as options for achieving occupant health and comfort.
What responsibilities do I have when using this report? Samet How can the roles of source control and air cleaning be better integrated into the Standard? It is unreasonable to expect ventilation, which acts primarily by dilution and displacement of indoor contaminants, to provide acceptable indoor air quality by itself.
ASHRAE Standard 62-1989: Energy, Cost, and Program Implications.
The maximum desirable emission rate aehrae all non-occupant indoor sources asgrae the space, given the ventilation rates prescribed by the Ventilation Rate Procedure, might be defined simply as: Consensus on acceptable concentrations is available for only a very limited number of contaminants, and there are very limited data on emission rates of contaminants from sources.
Mamayek, lllingworth Corporation Bjarne W. The Ventilation Rate Procedure prescribes the rate at which ventilation air must be delivered to a space and various means to condition that air. This would be consistent aehrae the current statement in the Standard that covers cases “where unusual indoor contaminants or sources are present or anticipated. Wheeler How can the energy impacts of various levels of ventilation be treated more explicitly in the Standard?
Wellford What editorial changes need to be made e. The foreword of the Standard states: Perhaps it is most reasonable to expect ventilation to provide, as a minimum, that portion of indoor air quality control that relates to thermal comfort and sensory comfort from occupant odor.
ASHRAE Standard Ventilation for Acceptable Indoor Air Quality
Dates and time periods 62-1899 with this report. As more information becomes available on sources and their emissions, and the health and comfort effects of those emissions, use of this procedure may very well increase. The single contaminant listed for sensory comfort criteria-carbon dioxide-is listed as a surrogate for human body odor. Ventilation rates are tabulated ashraae a wide range of residential, commercial, institutional, vehicular, and industrial spaces.
The revised version of that Standard, StandardVentilation for Acceptable Indoor Air Quality, recommended air flow rates for smoking-permitted and smoking- prohibited conditions in most spaces. Building designers use the Ventilation Rate Procedure in the vast majority of cases because stanrard is relatively straightforward. The review committee is also committed to simplifying and clarifying the Standard where possible, in response to requests from design engineers and building code officials.
Daynard, Northeastern University Richard W. Once the value of G was determined, the maximum desirable emission rate for all non- occupant indoor sources would be established.
Energy, Cost, and Program Implications. Sherber How should ventilation effectiveness be defined and incorporated into the standard? The tabulated values of outdoor air requirements “prescribe supply rates of acceptable outdoor air required for acceptable indoor air quality. The committee is currently addressing eight issues in preparation for deciding what aspects of the Standard need most attention.
ASHRAE Standard Energy, Cost, and Program Implications. – Digital Library
What Descriptive information to help identify this report. This Standard is still referenced in many building codes in the United States. The committee consists of 25 designers, equipment manufacturers, regulators, and researchers. Other additions provide opportunities for energy conservation. Its state-of-knowledge guidance is the best available basis for ventilation system requirements in mechanical sections of building codes for North America.
Some designers and building code officials interpret the tables to refer to the total air supplied to the space. Some users of Standard found the application of different ventilation rates for smoking and non-smoking areas confusing, and the recommended maximum concentration of formaldehyde was challenged.
For purposes of this Standard, acceptability of indoor air is based on both health and comfort considerations the comfort term refers to sensory rather than thermal comfort.
Who People and organizations associated with either the creation of this report or its content.
It now seems that the Indoor Air Quality Procedure will be most useful for evaluating the cost-effectiveness of increasing ventilation above minimum prescribed rates. Options for control of contaminants from sources other than occupants might best be evaluated by a more fully developed version of the Indoor Air Quality Procedure.
How can the scientific basis for the health and comfort aspects of Standard 62 be improved? Under those guidelines, three ahrae levels are offered for perceived indoor air quality which is similar to sensory comfort, as used in this paper. Collections This report is part of the 62-1998 collection of related materials. However, it requires knowledge of contaminants that will be present, acceptable concentrations of these contaminants sfandard protect health and ensure sensory comfort, and sources of these contaminants.
Environmental Protection Agency Arthur E. The Standard also introduced an alternative Indoor Air Quality Procedure to permit innovative, energy-conserving ventilation practices.
Authors Steele, Tim R.