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A method and apparatus for controlling and monitoring an air-conditioning system of a data processing installation includes at least one server switchgear cabinet for accommodating electrical units. Controlling of the cooling power of an air-conditioning unit is performed in at least two distinct de

A method and apparatus for controlling and monitoring an air-conditioning system of a data processing installation includes at least one server switchgear cabinet for accommodating electrical units. Controlling of the cooling power of an air-conditioning unit is performed in at least two distinct defined modes, wherein in a first mode the air volume capacity of a blower is controlled to a minimum value at a maximum defined temperature difference between sucked hot air and supplied cold air, and in a second mode the cooling power is controlled such that a maximum defined temperature for the cooling medium flowing from a heat exchanger is not exceeded. The method and apparatus provide energy-saving cooling of such data processing installations.

대표청구항 ▼

1. A method for controlling and monitoring an air-conditioning system of a data processing installation comprising at least one server switchgear cabinet for accommodating electrical units, wherein hot air is sucked by an air-conditioning device via a hot air suction, is cooled to cold air and is bl

1. A method for controlling and monitoring an air-conditioning system of a data processing installation comprising at least one server switchgear cabinet for accommodating electrical units, wherein hot air is sucked by an air-conditioning device via a hot air suction, is cooled to cold air and is blown via a cold air injection indirectly or directly into the at least one server switchgear cabinet or into a cold aisle which is confined by two rows, each of the rows including at least one of the at least one server switchgear cabinet or the air-conditioning device, wherein the cold air is sucked from the at least one of the server switchgear cabinet from the cold aisle and is transported into a hot aisle separated from the cold aisle or into an ambient space, wherein, by air temperature sensors, temperatures of the hot air at the hot air suction and the cold air at the cold air injection of the air-conditioning device and, by cooling medium temperature sensors, temperatures of a cooling medium passing through one or more heat exchangers in the air-conditioning device for dissipation of a heat loss on a cooling medium inlet side and on a cooling medium outlet side are determined, analyzed and a power of at least one blower in the air-conditioning device is controlled, wherein controlling of a cooling power of the air-conditioning device is performed in at least two distinct defined modes, wherein in a first operating mode of the at least two distinct defined modes, an air supply volume capacity of the at least one blower is controlled to a minimum value at a maximum defined temperature difference between the hot air and the cold air, the maximum defined temperature difference between the hot air and the cold air is used as a reference variable, and a cooling medium flow of the cooling medium is varied at the minimum value of the air supply volume for controlling the maximum defined temperature difference, and in a second operating mode of the at least two distinct defined modes, the cooling power is controlled such that a maximum defined temperature for the cooling medium flowing from the one or more heat exchanger is not exceeded. 2. The method of claim 1, wherein the air supply volume is increased when a minimum admissible temperature is undergone at the cold air injection. 3. The method of claim 1, wherein in the second operating mode of air-conditioning device, a second control is superimposed on a first control for the temperature difference which is adjustable between the hot air and the cold air, and an adjustable temperature difference between the cooling medium inlet side and the cooling medium outlet side is used as a reference variable for the second control. 4. The method of claim 1, wherein when a real power loss is lower than a planned power loss, the air-conditioning device is operated in the first operating mode and, when the real power loss is equal to greater than the planned power loss, the air-conditioning device is operated in the first operating mode or the second operating mode and the air temperature of the cold air at the cold air injection rises. 5. The method of claim 1, wherein upon activation of the second operating mode of the air-conditioning device, a warning is generated at a warning means and/or a service unit. 6. The method of claim 1, wherein switching to the second operating mode of the air-conditioning device is performed via a service unit with controlled access. 7. The method of claim 1, wherein water is used as the cooling medium and monitoring of a supply of hot return flow water from the at least one heat exchanger to external chillers is performed. 8. A method of controlling the cooling power of the air-conditioning device utilizing the method according to claim 1 and further comprising control of an air supply volume of the air-conditioning device by a pressure control. 9. An apparatus for controlling and monitoring of an air-conditioning system for a data processing installation comprising at least one server switchgear cabinet for accommodating electric units, wherein hot air is sucked by an air-conditioning device via a hot air suction and is cooled to cold air and is passed via a cold air injection indirectly or directly into the at least one server switchgear cabinet or into a cold aisle which is confined by two rows, each of the rows including at least one of the at least one server switch gear cabinet or the air-conditioning device, wherein the cold air is sucked from the at least one the server switchgear cabinet from the cold aisle and is transported into a hot aisle separated from the cold aisle or into an ambient space, wherein, by air temperature sensors, temperatures of the hot air at the hot air suction and the cold air at the cold air injection of the air-conditioning device and, by cooling medium temperature sensors, the temperatures of a cooling medium passing through one or more heat exchangers in the air-conditioning device for dissipation of a heat loss of a cooling medium inlet side and on a cooling medium outlet side are determined and, by a control unit of the air-conditioning device which is connected to the aft temperature sensors, are analyzed and power of at least one blower in the air-conditioning device is controlled, wherein the control unit comprises a means for a first control loop and a means for a second control loop for controlling cooling power of the air-conditioning device and at least two distinct operating modes are predefined, wherein in a first operating mode of the at least two distinct operating modes, an air supply volume of the at least one blower is controlled to a minimum value by the means for the first control loop at a maximum defined temperature difference between the hot air and the cold air, the maximum defined temperature difference between the hot air and the cold air is used as a reference variable, and a cooling medium flow of the cooling medium is varied at the minimum value of the air supply volume for controlling the maximum defined temperature difference, and in a second operating mode of the at least two distinct operating modes, by the means for the second control loop, the cooling power is controlled such that a maximum defined temperature for the cooling medium flowing from the one or more heat exchanger is maintained. 10. The apparatus of claim 9, wherein the control unit is connected on its output side with at least one of an optical warning means, an acoustical warning means, a superordinate monitoring installation of the data processing installation or a service unit, by which switching to the second operating mode of the air-conditioning device occurs with controlled access.