Abstract:
PROBLEM TO BE SOLVED: To provide a liquid cooling system using a plurality of coolant temperature controlling units (CCUs) such that a function is not stopped because of the trouble of a heat exchanger, a control valve, the loss of a cooling water source or the like. SOLUTION: Each CCU 310 of a plurality of the coolant temperature controlling units (CCU) out of a plurality of electronic racks that should be cooled is coupled to one electronics rack 330 that is different and incidental to, and is provided with the heat exchanger, first cooling loops provided with the control valve and second cooling loops 315, 316. The first cooling loops receive an objective cooling facility coolant from the source, and at least a part of the coolant is allowed to pass through the heat exchanger through the control valve. The second cooling loops 315, 316 supply an objective system coolant to the incidental electronics rack 330, and in the heat exchanger, the heat is diffused in the objective cooling facility coolant in the first cooling loops from the electronics rack 330. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enable to operate a computer system at a low temperature by constituting a refrigerating means by connecting to a closed loop including a cold plate through an enclosure by a refrigerant pipeline. SOLUTION: An enclosure 10 is provided with a component, i.e., a module covered by a cold plate 50 and is in thermal contact with it. The cold plate 50 is connected to an air-refrigerant heat exchanger 60 by a refrigerant pipeline 25. The pipeline is diverted from a flow through the cold plate 50 to allow a refrigerant to flow through the air-refrigerant heat exchanger 60, and a blower 70 blows air at both ends of the heat exchanger. Then, the refrigerant is cooled in the air-heat exchanger 60, and is circulated over a plurality of chips 42 to cool them. Thus, a computer system can be operated at a low temperature.
Abstract:
PROBLEM TO BE SOLVED: To prevent a cooling system of a computer room from breaking down owing to heat exchanger failure or control valve failure, or loss of chilled water source. SOLUTION: A cooling system comprises at least two modular cooling units (MCU) and each MCU 310 provides system coolant to multiple electronics subsystems. The each MCU 310 comprises a heat exchanger 324, a first cooling loop 325 with at least one control valve 316, and a second cooling loop 327. The first cooling loop 325 receives chilled facility coolant from a source and passes at least a portion thereof through the heat exchanger. The second cooling loop supplies chilled system coolant to the multiple electronics subsystems and, in the heat exchanger 324, heat is expelled from the multiple electronics subsystems to the chilled facility coolant in the first cooling loop 325. At least one of control valve 316 controls flow and temperature of the facility coolant. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a cooling device which can prevent cooling substance in a liquid state from returning to a compressor. SOLUTION: An auxiliary heat mechanism 20 functions to return a refrigerant in an evaporation type cooling plate 10 for an electronic module 40 to a compressor in a vapor state. Based on measured values of pressure and temperature of the refrigerant exiting from the cooling plate 10, a control unit controls ON and OFF operation of an electric-resistive auxiliary heating element 21 in order to compensate for a variation in heat dissipation caused in the module 40. Additional heat can be supplied by a single planar element or inline heating element. The auxiliary heating mechanism 20 prevents the refrigerant substance from returning to the compressor which adversely affects the life or operating efficiency of the compressor.