"This booklet presents instruments and assistance to layout, fee, and function energetic and passive beam structures to accomplish a made up our minds indoor weather. It additionally offers examples of lively and passive beam calculations and selections"--
summary: "This ebook presents instruments and counsel to layout, fee, and function energetic and passive beam platforms to accomplish a made up our minds indoor weather. It additionally provides examples of lively and passive beam calculations and decisions"
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Additional info for Active and passive beam application design guide
FIGURE 10-11 Control strategy in which chilled-water supply is halted when moisture is detected on CHWS pipe. 52 10 Controls FIGURE 10-12 Condensation prevention strategy involving interruption of water flow after window is opened. 1 INSTALLATION Beams can be installed fully exposed, recessed, integrated within a suspended ceiling, or positioned above a perforated or an open grid ceiling. When beams are installed within or above a ceiling, suitable access must be provided for service and maintenance.
In this application, the use of modulating FIGURE 10-5 Open-loop beam chilled-water system supply temperature maintained by mixing primary and secondary chilled water (three-way valve and bypass). FIGURE 10-6 Open-loop beam chilled-water system supply water temperature maintained by mixing primary and secondary chilled water (two-way valve and bypass). FIGURE 10-7 Closed-loop beam chilled-water system supply temperature maintained by regulating primary water flow in heat exchanger. 48 10 Controls valves (valve controlled) with proportional integral response is preferred.
The raised velocity of the primary air reduces the static pressure behind the coil, inducing room air through the face and coil. This room air, now conditioned, mixes with the primary air and is discharged back into the room through integral diffusers. One of the performance determinants of an active beam is its induction ratio. This is defined as the total air volume flow rate discharged from the beam divided by the primary air volume flow rate delivered from the system: Q primary Q sec ondary IR = ------------------------------------------------Q primary FIGURE 8-1 Three-dimensional illustration of active beam installation.