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 issues are listed below along with the chairman of the subcommittee responsible for dealing with each issue: Taylor How can the coverage of residential ventilation be improved in Standard 62? 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.

Increased ventilation for major non-occupant sources should be evaluated along with source control and air cleaning. The committee consists of 25 designers, equipment manufacturers, regulators, and researchers. Second, the distinction between “smoking allowed” and “smoking prohibited” has been removed.

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. The Indoor Air Quality Procedure was originally developed to determine 62-11989 much ventilation might be stanfard below the rates specified by the Ventilation Rate Procedure.

ASHRAE Standard Energy, Cost, and Program Implications. – Digital Library

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. Some designers and building code officials interpret the tables to refer to the total air supplied to the space.


This paper highlights some of the key features of the current Standard and summarizes the status of the review process. 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. Standardretains the two procedures for ventilation design, the Ventilation Rate Procedure and the Indoor Air Quality 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.

If these emission rates were not exceeded, ventilation rates prescribed by the Ventilation Rate Procedure would suffice. First, the minimum outdoor air flow rate has changed from 2. Digital Files 59 image files available in xshrae sizes 1 file. Now that the revised Standard Standard is available, its usefulness needs to be evaluated. Follow the links below to find similar items on the Digital Library.

Authors Steele, Tim R. Identifier Unique identifying numbers for this report in the Digital Library or other systems. Unfortunately, these numbers are sometimes used without a very broad understanding of ventilation and how it relates to indoor air quality.

Furthermore, Standard 62 contains very little information on how to use this procedure. Ventilation for Acceptable Indoor Air Quality 5.

Another special emphasis is on making clearer links between sources of contaminants and control of indoor air quality by ventilation, source management, or air cleaning. The tabulated values of outdoor air requirements “prescribe supply rates of acceptable outdoor air required for acceptable standqrd air quality. 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.


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. Sherber, Carrier Corporation Steven T. Physical Description 55 pages. 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.

ASHRAE Standard 62-1989: Energy, Cost, and Program Implications.

Ventilation rates are calculated separately for health and perceived air quality; the higher rate is recommended for design. There are two major changes in this version of the Standard compared to the version. The Ventilation Rate Procedure prescribes the rate at which ventilation air must stanndard delivered to a space and various means to condition that air. ASHRAE Standards are reviewed every 5 years or less, and are updated regularly to incorporate the newest proven technology.

When Dates and time periods associated with this report.