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Additional resources for ASHRAE Standard 62-1999 - Ventilation for Acceptable Indoor Air Quality
Submittal in paper form is acceptable. The following instructions apply to change proposals submitted in electronic form. 1 for DOS format. , for WordPerfect files). If supplemental background documents to support changes submitted are included, it is preferred that they also be in electronic form as wordprocessed or scanned documents. 5” floppy disk. wpg), or e-mail address. wpg), listing of the submitter’s e-mail address on the change submittal form, or a letter with submitter’s signature accompanying the disk or sent by facsimile (single letter may cover all of proponent’s proposed changes).
Background. Mr. 2 requirement that outside air be provided in school classrooms at the rate of 15 cfm per person. " Mr. Spurlock’s letter also enclosed typical schedules for elementary, middle and high schools in the Gwinnett County Georgia Public Schools. These schedules indicate that on a typical day the HVAC systems run 510 minutes and during this time the classroom is occupied 250 minutes or 49 percent of the time. Also enclosed is an actual schedule for a typical elementary school classroom indicating that the classroom is occupied 44 percent of the time.
Question 4a. Which of the following methods would be considered consistent with the Standard for increasing the supply air (Vsc) to a critical space such as a conference room (shown in spreadsheet not included in this response)? Concept 1. Increase the primary supply air (ventilation air) from the HVAC system and provide a constant volume terminal unit with reheat coil to compensate for the over cooling that may result from the excess primary air. Concept 2. Provide an exhaust fan with ducted discharge to the ceiling plenum of an adjacent space, to mix primary supply air from the HVAC system (ventilation air) with transfer air drawn from an adjacent space to produce increased total airflow (supply air).
ASHRAE Standard 62-1999 - Ventilation for Acceptable Indoor Air Quality