TROX active chilled beams type DID-E discharge the air in one direction and use a combination of air and water systems for fresh air supply as well as room heating and cooling. They are particularly suitable for use in hotel bedrooms, individual hospital wards and cellular offices.

They combine the air flow characteristics of sidewall supply grilles with the energy benefits of load dissipation using water.

The required primary volume flow for fresh air is supplied through a duct into which nozzles are fitted. As a result secondary air is induced through a horizontal water coil for heating or cooling, or heating and cooling.

In the mixing section of the type DID-E the induced air is mixed with the primary air and the total discharged into the room via a TROX sidewall grille.