www.heatingandventilating.net


Left: Tim Tanner, product technical manager – ventilation technology, TROX UK


Air conditioning


to air discharge are controlled by an integral thermal actuator, within the diffuser which, in turn, controls the internal sleeve. The supply air to room air temperature difference may range from -10 to +15K.


Right: RFD-V cooling function


Far right: RFD-V heating function


Q. And what about the acoustic implications? A. When designing the system, it is important to consider the acoustic variables. To assess the acoustic requirements for a room with exposed services, a direct noise contribution needs to be calculated. This includes assessment for:  % leaving outlet  Distance to listener  Directivity  Reverberation time


Armed with this information, we can provide


an exposed application without requiring the high discharge velocities and pressures.


Q. What if the room needs both heating and cooling? A. To achieve optimum conditioning during both heating and cooling, variable geometry diffusers should be used. Previously, only electrically actuated variable geometry diffusers were available from TROX. These work well but require power and a control signal to be wired to the actuator. The new TROX RFD-V, however, is designed with a thermal


actuator and an internal mechanism to manage air more effectively without the need for additional wiring. An adjustable internal sleeve enables the unit to move between horizontal and vertical air discharge, depending on whether the system needs to cool or warm the space. During cooling the air discharge is horizontal and radial. As the supply temperature increases the discharge pattern will switch automatically to vertical, directing warmer air more effectively into the occupied space. Once the supply temperature decreases, the air discharge switches back to horizontal once more. These changes


guidance on the best equipment choices and locations for placement, to achieve high levels of comfort in these more challenging spaces.


“Without the flat and continuous surface of a suspended ceiling, the Coanda effect can no longer operate, leading to near vertical discharge of air into the space.”


WHY CHOOSE US -+-


WE UNDERSTAND HUMIDITY CONTROL FOR HVAC PROJECTS


SPECIALISTS


HUMIDITY CONTROL MADE EASY


-+-


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