| 摘要 |
<p>An apparatus for cooling a substantially closed space, in particular a data centre, with recirculation air, comprising at least one cooling unit. The unit comprises a heat exchanger with a primary set of ducts and a secondary set of ducts, each set of ducts having an in- and outlet. The primary in-and outlet ducts are connected to an environment of the space to form a first recirculation path, and the secondary in-and outlet ducts are connected to the space to form a second recirculation path. The unit comprises a controller to control an operation of the unit, and a sensor to provide a sensor signal representative of a parameter of the unit. The controller is arranged to derive a control signal from the sensor signal, whereby the unit comprises a control signal output for outputting the control signal to another unit and a control signal input for receiving a control signal from another unit, the controller being arranged to control the operation of the unit in response to the control signal and the control signal from another unit as received at the control signal input.</p> |
