Active and passive beam application design guide - download pdf or read online

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ISBN-10: 1936504839

ISBN-13: 9781936504831

"This publication presents instruments and suggestions 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 booklet offers instruments and counsel to layout, fee, and function energetic and passive beam platforms to accomplish a made up our minds indoor weather. It additionally offers examples of lively and passive beam calculations and choices"

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2 Active Beams Installed Perpendicular to Façade The perpendicular arrangement may allow for longer beam sections, which can lead to a reduced number of individual active beams and thus lower costs. This affects the horizontal air discharge (colliding airstreams), the air distribution across the modules (potential redistribution of partitions), and the resulting flexibility, however, must be considered. FIGURE 8-12 Active beams installed parallel to façade (façade at top, wall at bottom). 33 Active and Passive Beam Application Design Guide FIGURE 8-13 Active beams installed perpendicular to façade (façade at top, wall at bottom).

2 Reactive Strategies Condensation sensors such as those shown in Figure 10-8 are devices that are used to detect moisture on the chilled-water supply pipe. When an indication of moisture is received from the sensor, the water supply is stopped or its supply temperature is increased. This is a reactive method that can stand alone or form part of a total strategy. Modern condensate sensors are very sensitive to the smallest amount of moisture forming. Condensation detected on the supply pipework does not mean that the chilled beam will start to condensate and then drip.

The optimal placement of active beams is dependent on the occupied zone conditions. The active beams are typically placed above the work stations, because the velocity is low directly underneath the beam (when the throw pattern of the beam is horizontal). If the beam is positioned near a wall, the unidirectional throw pattern is recommended. The designer should understand these velocities and air temperature differences in order to properly locate the beams. Manufacturers’ performance data, software, CFD models, and mock-ups can be used to assist with this.

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