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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Other additions provide opportunities for energy conservation. Interact With This Report Here are some suggestions for what to do next. Some designers and building code officials interpret the tables to refer to the total air supplied to the space. Dixon, State of Florida P.
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. Ten types of prototypical commercial buildings used by Bonneville for load forecasting purposes were examined: Unfortunately, these numbers are stansard used without a very broad understanding of ventilation and how it relates to indoor air quality.
Through its use, it had become evident to Bonneville that Standard needed interpretation. 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.
ASHRAE Standard Ventilation for Acceptable Indoor Air Quality
Health-based criteria and guidelines are listed for the following contaminants: Furthermore, Standard 62 contains very little information on how to use this procedure. Standardretains the two procedures for ventilation design, the Ventilation Rate Procedure stsndard the Indoor Air Quality Procedure. 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.
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. Authors Steele, Tim R. More information about this report can be viewed below.
Interpretations for Standard 62-1989
Wellford What editorial changes need to be made e. 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. 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.
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 Indoor Air Quality Procedure was originally developed to determine how much ventilation might be reduced dtandard the rates specified by the Ventilation Rate Procedure.
Tables of design values for C, the maximum acceptable concentrations of indoor contaminants or source-related contaminant mixtureswould be necessary.
Interpretations for Standard
However, it requires knowledge of contaminants that will be present, acceptable concentrations of these contaminants to protect health and ensure sensory comfort, and sources stanadrd these contaminants. 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 rates in this table are derived from physiological considerations, subjective evaluations, and professional judgements.
The tabulated values of outdoor air requirements “prescribe supply rates of acceptable outdoor air required for acceptable indoor air quality. What responsibilities do I have when using this report? Energy, Cost, and Program Implications. All numbers in the examples below are arbitrary except the C values for nitrogen dioxide and particles which are EPA ambient air quality standards, ashrad the 0.
Ventilation rates are calculated separately for health and perceived air quality; the higher rate is recommended for design.
ASHRAE Standard 62-1989: Energy, Cost, and Program Implications.
The foreword of the Standard states: A table of design values for this correction factor could be developed, similar to the table of such values in the European ventilation guidelines Digital Files 59 image files available in multiple sizes 1 file.
Energy conservation was the primary driving force.
What Descriptive information to help identify this report. The Ventilation Rate Procedure prescribes the rate at which ventilation air must be delivered to a space and various means to condition 621-989 air. The 13 voting members of the committee are: Ventilation for Acceptable Indoor Air Quality 5.