Rittal Gmbh&co. Kg

Helmut Nonn

Michael Nicolai

Tim Siegel

The invention relates a method for air conditioning of an IT environment which comprises hardware IT devices, computers, memories, telecommunication devices and peripheral devices, wherein a refrigeration supply system of the IT environment has a free cooler, refrigerators and an air circulation system which is operated by means of fans and contains heat exchangers for drawing off the heat generated by the hardware, wherein the method includes the following steps: determining a basic desired value for the feed air temperature of the IT environment on the basis of the existing hardware-configuration, measuring at least one parameter of the hardware which represents a disturbance variable which has a direct or indirect effect on the feed air temperature, and storing the measured value of the parameter, ascertaining a desired value for the feed air temperature from the measured parameter value of the hardware, and raising the target value for the feed air temperature until a critical parameter value is measured, then reducing the desired value for the feed air temperature until the stored value is achieved again, and optionally, if the stored value is not reached within a previously defined time period, resetting the desired value for the feed air temperature to the basic desired value.

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Malberg, Germany

Helmut Nonn