Delivering Consistent Comfort in a High-Traffic Lobby Space
A tall lobby sets three selection criteria: how well the supply air mixes before it reaches the occupied zone, how the outlets sit in the ceiling, and how the return path is coordinated for the design airflow.
Acoustic performance is assessed from published sound and pressure-loss data for the selected outlets, grilles and plenum dimensions together.
To specify this, send the lobby volume and ceiling height, the design airflow, the ceiling detail, and the sound level the project is working to.
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Three constraints, and the products that answer them
Precision engineering transforms complex environmental challenges into strategic opportunities for performance and efficiency.
Mixing supply air in a tall volume
A tall volume can stratify, so the discharge pattern has to mix supply air with room air before it reaches the occupied zone.
A swirl diffuser induces room air into the supply jet close to the face. The catalogue lists square, round and adjustable 24-blade variants, including a 595 x 595 mm adjustable face. Select against the design airflow and the throw the space requires.
Outlets that follow the ceiling detail
Building management wants the ceiling line kept continuous in the space every resident walks through.
A linear slot diffuser runs with the ceiling detail rather than punctuating it. The Q profile is listed in 1000 mm and 1200 mm lengths, three slots. Finishes on enquiry.
Coordinating the return arrangement
Return face velocity and generated noise follow from the design airflow, the grille free area and face size, and the pressure loss through the return path. The plenum is one part of that arrangement.
Metal and panel return-air plenums are listed across 322 product codes, so chamber dimensions can be coordinated with the selected grille and the design airflow. Assess the resulting face velocity and pressure loss against the project's acoustic criteria using published data for the selected components.
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