Rehva Guidebooks

Chilled Beam Application

Beskrivning

Chilled beam cooling is relatively new technology that has rapidly spread all over the Europe. Its advantagesare in low noise generation, low room velocities and flexibility. High temperature level of cooling media also improves the energy efficiency of the mechanical cooling and allows longer periods of free cooling.

The guidebook presents theory on the principles of chilled beam cooling and illustrates its practical applications. The chilled beam systems are primarily used for cooling and ventilation in spaces, where good indoor environmental quality and individual space control are appreciated and where the internal moisture loads are moderate. Chilled beam systems are dedicated outdoor air systems. They can also be used for heating. Active chilled beams are connected to the ventilation ductwork, high temperature cold water and when desired low temperature hot water system. The main air-handling unit supplies primary air into the various rooms through the chilled beam. Primary air supply induces room air to be recirculated through the heat exchanger of the chilled beam. In order to cool or heat the room either cold (14–17 °C) or warm (30–50 °C) water is cycled through the heat exchanger. Recirculated room air and primary air mix prior to diffusion in the space. Room temperature is controlled by regulating the water flow rate of the heat exchanger.