Active and passive beam application design guide by -

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"This booklet offers instruments and information 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 selections"--

summary: "This publication offers instruments and tips to layout, fee, and function lively and passive beam structures to accomplish a made up our minds indoor weather. It additionally provides examples of energetic and passive beam calculations and choices"

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2. Calculate the capacity of the water vapour sources. 1 ZONE CONTROL The primary control of space temperature is normally accomplished by varying the water flow while maintaining a constant primary air temperature and flow rate. The primary airflow rates supplied to active beam systems are much closer to the space ventilation rates than is the case for all-air systems, because much of the space sensible load is removed by the chilled-water circuit. Varying the airflow can provide additional control of the room temperature or indoor air quality (IAQ).

C. (50 and 250 Pa). This pressurized air is then injected near the heat 25 Active and Passive Beam Application Design Guide exchanger at relatively high velocity, creating a region where the static pressure is reduced, relative to the room. Figure 8-2 shows an active beam in operation. The area above the coil is the pressurized plenum with integral nozzles injecting primary air into the mixing cavity. The raised velocity of the primary air reduces the static pressure behind the coil, inducing room air through the face and coil.

FIGURE 11-2 Careful tightening of threaded pipe connections to avoid damage to beam coil. 5 COMMISSIONING When commissioning a beam system, several initial steps should be considered: • • • • Ensure that the coil is free of dust and debris by visual inspection. Ensure that the beam is free of all transportation packaging. Ensure that the primary air supply rate and temperature is within tolerance. Ensure that the supply water flow rate(s) and temperature(s) are within tolerance. During commissioning, the commissioning agent should verify the operation of the control sequence, including sensors used for condensation avoidance and any other project specifications.

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