Abstract: A water cooling unit for conditioning systems, comprising, within a box-like container, an air precooling panel, provided with a matrix of through holes, associated with means for cooling a stream of external air that passes through the matrix of holes, at least one pair of laterally adjacent heat exchange batteries, for each pair of laterally adjacent batteries a first battery being for freecooling of the water entering an evaporator and the second battery being a condensation battery for a condenser of the evaporator, means for the exit outside the box-like container of the heated air that exits from the at least one pair of laterally adjacent heat exchange batteries, first means for hydraulic connection between the water return of an air-conditioning system and the water inlet of the at least one freecooling battery, and second means for hydraulic connection between the at least one freecooling battery and the evaporator.

Abstract: A power consumption economizer for refrigerating machines of the chiller type, comprising, on a same line, a pump for a heat transfer fluid, an evaporator of an associated refrigeration system for refrigerating the heat transfer fluid, sensors for detecting the flow and temperature of the heat transfer fluid and flow-rate adjustment means being associated with the pumping means. The system comprises bypass elements adapted to exclude reversibly the evaporator from the line.

Abstract: A power consumption economizer for refrigerating machines of the chiller type, comprising, on a same line, a pump for a heat transfer fluid, an evaporator of an associated refrigeration system for refrigerating the heat transfer fluid, sensors for detecting the flow and temperature of the heat transfer fluid and flow-rate adjustment means being associated with the pumping means. The system comprises bypass elements adapted to exclude reversibly the evaporator from the line.