Abstract: A conditioning system of the free cooling type for environments and particularly for computing centers, which comprises: a conditioning unit of the free cooling type provided with an evaporative cooler using water, first fans, for the exit to the outside environment of a stream of warm air in output from said conditioning unit, second fans for emitting cool, conditioned air from said conditioning unit, elements for accumulating reserve water which are interconnected to the conditioning unit, a detector for detecting the presence of a flow of water in input to the accumulation elements, which are interconnected with an electronic unit for the control and management of the conditioning system.

Abstract: A conditioning unit of the indirect free cooling type, particularly for conditioning computing centers, of the type comprising: an air/air heat exchanger, inside which two air flows, exchange heat: a primary air flow from and toward an environment to be air-conditioned, and a secondary air flow, or process flow, drawn from outside, first fans for moving the primary air flow, second fans for moving the secondary air flow.

Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

Abstract: A conditioning unit of the free cooling type, particularly for conditioning computing centers, of the type comprising: a water evaporation device for cooling a conditioning air flow; fans for moving the conditioning air flow; an auxiliary electric power supply unit; elements for detecting and signaling a type of electric power supply that is active, whether from an electrical grid or from the auxiliary power supply unit, elements for measuring the electric power absorbed by the conditioning unit, an electronic control and management unit, preset to control the fans in order to limit the speed and power absorption of each one of the fans.

Abstract: A conditioning unit of the indirect free cooling type, particularly for conditioning computing centers, of the type comprising: an air/air heat exchanger, inside which two air flows, exchange heat: a primary air flow from and toward an environment to be air-conditioned, and a secondary air flow, or process flow, drawn from outside, first fans for moving the primary air flow, second fans for moving the secondary air flow.

Abstract: A conditioning system of the free cooling type for environments and particularly for computing centers, which comprises: a conditioning unit of the free cooling type provided with an evaporative cooler using water, first fans, for the exit to the outside environment of a stream of warm air in output from said conditioning unit, second fans for emitting cool, conditioned air from said conditioning unit, elements for accumulating reserve water which are interconnected to the conditioning unit, a detector for detecting the presence of a flow of water in input to the accumulation elements, which are interconnected with an electronic unit for the control and management of the conditioning system.

Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

Abstract: A cooling system has a tandem compressor, a condenser, an electronic expansion valve and an evaporator arranged in a direct expansion cooling circuit. The tandem compressor includes a variable capacity compressor and a fixed capacity compressor. A controller controls the electronic expansion valve and selects which of a plurality of superheat control modes to use in operating the electronic expansion valve based on control parameters and a current operating status of each of the variable capacity compressor and fixed capacity compressor of the tandem compressor.

Abstract: A cooling system has a tandem compressor, a condenser, an electronic expansion valve and an evaporator arranged in a direct expansion cooling circuit. The tandem compressor includes a variable capacity compressor and a fixed capacity compressor. A controller controls the electronic expansion valve and selects which of a plurality of superheat control modes to use in operating the electronic expansion valve based on control parameters and a current operating status of each of the variable capacity compressor and fixed capacity compressor of the tandem compressor.

Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.