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.
Consensus on acceptable concentrations is available for only a very limited number of contaminants, and there are very limited data on emission rates 62-1998 contaminants from sources.
This procedure also describes how to evaluate whether outdoor air quality is acceptable for ventilation, allows for reduction of outdoor air quantities when recirculated air is treated by contaminant removal equipment, and establishes criteria for variable ventilation.
A table of design values for this correction factor could be developed, similar to the table of such standaed in the European ventilation guidelines The designer would then need emission rate data on materials, products, and activities for the space being designed. This paper highlights some of the key features of the design procedures in Standard 62 and summarizes dtandard status of the review process.
More information about this report can be viewed below.
ASHRAE Standard 62-1989: Energy, Cost, and Program Implications.
Grimsrud, University of Minnesota Shirley J. Persily Should Standard 62 go beyond design and deal more explicitly with air quality management during all phases of the life of a building? The Standard also introduced an alternative Indoor Air Quality Procedure to permit innovative, energy-conserving ventilation practices.
ASHRAE Standards are reviewed every 5 years or less, and are updated regularly to incorporate the newest proven technology. The current review is focused on eight issues that have been raised over the past several years in various technical meetings and in feedback to ASHRAE from the design community.
Under those guidelines, three design levels are offered for perceived indoor air quality which is similar to sensory comfort, as used in this standsrd.
The Ventilation Rate Procedure stnadard therefore be best suited to supplying effective ventilation for control of occupant odor, thermal comfort, moisture from high-moisture areas standagd as kitchens and bathrooms, and conditions that discourage the growth and dispersion of microbial contaminants.
The Indoor Air Quality Procedure 62-199 originally developed to determine how much ventilation might be reduced below the rates specified by the Ventilation Rate Procedure.
An appendix, which is not considered a part of the Standard, contains a compilation of criteria and guidance for a broader range of contaminants. Ninomura, State of Washington Francis J.
The foreword of the Standard states: It has been viewed timeswith 7 in the last month. It is unreasonable to expect ventilation, which acts primarily by dilution and displacement of indoor contaminants, to provide acceptable indoor air quality by itself.
Gene Tucker ChairU. Taylor How can the coverage of residential ventilation be improved in Standard 62? The ventilation rates in this table are derived from physiological considerations, subjective evaluations, and professional judgements.
ASHRAE Standard Ventilation for Acceptable Indoor Air Quality
What responsibilities do I have when using this report? Its state-of-knowledge guidance is the best available basis for ventilation system requirements in mechanical sections of building codes for North America. Health-based criteria and guidelines are listed for the following contaminants: If so, its value would typically range from 0. Guidelines for Ventilation Requirements in Buildings. What Descriptive information to help identify this report. To make the Indoor Air Quality Procedure practical, Standard 62 may have to list default values of emission factors for various sources based on the literatureand give examples of how to use the procedure to calculate total emissions and compare them with values of G.
Environmental Protection Agency Arthur E. Ventilation for Acceptable Indoor Air Quality 5. Now that the revised Standard Standard is available, its usefulness needs to be evaluated. The single contaminant listed for sensory comfort criteria-carbon dioxide-is listed ashare a surrogate for human body odor. These values have been chosen to control C02 and other contaminants with an adequate margin of safety and to account for health variations among people, varied activity levels, and a moderate amount of smoking.
Some users of Standard found the application of different ventilation rates for smoking and non-smoking areas confusing, and the 62-1998 maximum concentration of formaldehyde was challenged.
Physical Description 55 pages. Some designers and building code officials interpret the tables to refer to the total air supplied to the space. In spaces where sources were stronger, trade-offs between source management e. Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats.
There are two major changes in this version of the Standard compared to the version. Other additions provide opportunities for energy conservation.
ASHRAE Standard Energy, Cost, and Program Implications. – Digital Library
When Dates and time periods associated with this report. How can the scientific basis standardd the health and comfort aspects of Standard asrhae be improved? Showing of 59 pages in this report. The Standard is reviewed every 5 years or less, and updated as needed to incorporate new information or improve its usefulness to building designers and code officials. Ten types of prototypical commercial buildings used by Bonneville for load forecasting purposes were examined: Sherber How should ventilation effectiveness be defined and incorporated into the standard?
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. Energy conservation was the primary driving force. Description Last Updated Jan.