The DOAS Solution Guide - Krueger

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Approach 3 Parallel DOAS, Supply to Chilled Beams 6 DOAS Air Supply ~(0.3 CFM/S.F.) Chilled Beam Hot & Chilled Water Providing You with Air Distribution Solutions
About This Application A parallel version of the DOAS terminal unit can be used to supply chilled beams in locations where it may be necessary to provide conditioned air independent of the main air handling units. When the air handler is on, the fan on the parallel DOAS terminal unit is off. Using the parallel DOAS in this application provides an additional level of control (that is currently not available in chilled beam designs) since the primary air inlet on the parallel DOAS terminal unit acts as a VAV control valve for the chilled beams. This allows for airflow going to the chilled beams to better adapt to varying load conditions in the space. A good example would be to provide more air to a conference room when it is fully occupied. However, the real potential for energy savings occurs during off-peak or partially occupied times. When the air handlers are turned off, the fan on the parallel DOAS terminal unit is turned on to provide cool air to the chilled beams only in the zones that require it. Sensible Cooling Coil Krueger | www.krueger-hvac.com Parallel DOAS Fan Powered Terminal Unit DOAS Air Supply ~(0.3 CFM/S.F.) Chilled Beam 7
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The DOAS Solution Guide - Krueger

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