• August 14, 2019

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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Unique identifying numbers for this report in the Digital Library or other systems. Description Last Updated Jan. It has been viewed timeswith 7 in etandard last month. 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.

An appendix, which is not considered a part of the Standard, contains a compilation of criteria and guidance for a broader range of contaminants. However, it requires knowledge of contaminants that will be present, acceptable concentrations of these contaminants to awhrae health and ensure sensory comfort, and sources of these contaminants.

The Standard also introduced an alternative Indoor Air Quality Procedure to permit innovative, energy-conserving ventilation practices. The maximum desirable emission rate for all non-occupant indoor sources affecting the space, given the ventilation rates prescribed by the Ventilation Rate Procedure, might be defined simply as: This paper highlights some of the key features of the current Standard and summarizes the status of the review process.

This standard is being continually reviewed and updated to reflect new information, especially on public health aspects of indoor air and sources of indoor contaminants. In spaces where standarx were stronger, trade-offs between source management e.

This Standard is still referenced in many building codes in the United States. Taylor How can the coverage of residential ventilation be improved in Standard 62? Special emphasis is being given to the health and comfort basis of the Standard and to describing the complementary roles of source control and air cleaning for providing good indoor air quality. Sherber, Carrier Corporation Steven T. Unfortunately, these numbers are sometimes used without a very broad understanding of ventilation and how it relates to indoor air quality.


Wellford What editorial changes need to be made e. More information about this report can be viewed below. Ventilation for Acceptable Indoor Air Quality 5.

Ventilation rates are calculated separately for health and perceived air quality; the higher rate is recommended for design. Ventilation rates are tabulated for a wide range of residential, commercial, institutional, vehicular, and industrial spaces. The amounts of outdoor air to be supplied to various types of spaces are conveniently tabulated, and readily used by designers.

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. Other additions provide opportunities for energy conservation.

Some users of Standard found the application of different ventilation rates for smoking and non-smoking areas confusing, and the standadr maximum concentration of formaldehyde was challenged. When Dates and time periods associated with this report. ASHRAE produces Standards and Guidelines that address test procedures for evaluating products, product specifications, and system operating performance.

Energy, Cost, and Program Implications.

Interpretations for Standard 62-1989

Usage Statistics When was this report last used? Xshrae committee is currently addressing eight issues in preparation for deciding what aspects of the Standard need most attention. Dates and time periods associated with this report.

The designer would then need emission rate data on materials, products, and activities for the space being designed. 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.

What responsibilities do I aehrae when using this report? Building designers use the Ventilation Rate Procedure in the vast majority of cases because it is relatively straightforward. The Ventilation Rate Procedure prescribes stansard rate at which ventilation air must be delivered to a space and various means to condition that air. Who People and asbrae associated with either the creation of this report or its content. Standardretains the two procedures for ventilation design, the Ventilation Rate Procedure and the Indoor Air Quality Procedure.

A table of design values for this correction factor could be developed, similar to the table of such values in the Ashrse ventilation guidelines The Indoor Air Quality Procedure was originally developed to determine how much ventilation might be reduced below the rates specified by the Ventilation Rate Procedure.


ASHRAE Standard Ventilation for Acceptable Indoor Air Quality

Authors Steele, Tim R. Under those guidelines, three design levels are offered for perceived indoor air quality which is similar to sensory comfort, as used in this paper. This would be consistent with the current statement in the Standard that covers cases “where unusual indoor contaminants or sources are present or anticipated.

This paper highlights some of the key features of the design procedures in Standard 62 and summarizes the status of the review process.

Physical Description 55 pages. Interact With This Report Here are some suggestions for what to do next.

Persily Should Standard 62 go beyond design and deal more explicitly with air quality management during all phases of the life of a building? There standarrd two major changes in this version of the Standard compared to the version. The revised version of that Standard, StandardVentilation for Acceptable Indoor Xtandard Quality, recommended air flow rates for smoking-permitted and smoking- prohibited conditions in most spaces. Instead of prescribing outdoor air ventilation rates for various types of indoor spaces, the Indoor Air Quality Procedure is based on maintaining acceptable concentrations of “all known contaminants of concern.

The Ventilation Rate Procedure might therefore be best suited to supplying effective ventilation for control of ashrrae odor, thermal comfort, moisture from high-moisture areas such as kitchens and bathrooms, and conditions that discourage the growth and dispersion of microbial contaminants.

There is also the approach taken by the European ventilation guidelines. How can the scientific basis dtandard the health and comfort aspects of Standard 62 be improved? About Browse this Collection.

They also need guidelines on the total emission rate from all sources that should not be exceeded when ventilation is supplied at rates specified by the Ventilation Rate Procedure.