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Integration of dedicated outdoor air (OA) systems with parallel terminal systems is not new. However, many engineers have dismissed the concept of a separate dedicated OA system on the basis of cost and space limitations. Recently, some industry leaders have employed designs using the dedicated OA approach. The author's paper in ASHRAE Transactions illustrates the complexity of the problem and raises serious questions about the ability of all-air VAV systems to actually meet the ventilation rate procedure of ANSI/ASHRAE Standard 62-1999, Ventilation for Acceptable Indoor Air Quality.

 

Citation: ASHRAE Journal, vol. 43, no. 5, May 2001