Ncr Corporation

Teradata Us, Inc.

David G Wang

P Keith Muller

To determine a system condition, temperature information from at least one temperature sensor in the system is received, along with second information from at least a second type of sensor in the system. An out-of-range temperature condition is detected according to the received temperature information. According to the second information, one of plural potential causes of the out-of-range temperature condition is selected.

Determining a condition of a system based on plural measurements

An air-cooled electronic component cabinet has an air sampling conduit to enable smoke detection from air from different areas within the cabinet. An air sampling conduit has one or more orifices to sample air from the different areas within the cabinet, such as adjacent different electronic chassis assemblies or enclosures stacked in a rack within the cabinet. An axial fan or blower draws air samples into the conduit, or the air samples are drawn in by operation of convection or other airflow established within the cabinet. In the air sampling conduit, the air samples are mixed and conveyed for sampling by one or more smoke detection devices mounted, e.g., within the conduit, or within an attached expansion joint section to reduce the airflow velocity or accommodate multiple smoke detection devices. Orifices in the air sampling conduit varying in size or number at different conduit areas regulate associated sampled air proportions. A variety of configurations in which such air sampling conduits are deployed are presented.

Smoke detection for hardware cabinets

A hardware cabinet includes a chassis that is designed for mounting multiple heat-generating electronic systems and a door that allows access into the cabinet. The door has a solid face that extends from the top portion of the door along the majority of the door's length. An opening formed in a lower portion of the door allows chilled air to enter the cabinet. The chassis is structured so that, when electronic systems are mounted in the cabinet, a plenum is formed between the door and the electronic systems. The plenum allows air entering the cabinet to rise between the door and the electronic systems.

Delivering chilled air to components in a hardware cabinet

An electronic hardware cabinet includes a forced-air component positioned to force a stream of air to move through the cabinet and at least two electronic assemblies mounted within the cabinet, each of which includes a heat-generating component. The electronic assemblies are positioned so that a portion of the stream of air is heated by a first one of the heat-generating components and, thereafter, that portion of the stream of air moves toward a second one of the heat-generating components. An airflow diverter is positioned between the electronic assemblies to deflect that portion of the stream of air heated by the first heat-generating component to prevent it from reaching the second heat-generating component.

Minimization of cooling air preheat for maximum packaging density

A heat sink assembly includes a block formed of a thermally conductive material. For example, the thermally conductive material includes thermally conductive polymer. A heat conduit (e.g., a heat pipe) extends through a substantial portion of the block. In one example arrangement, airflow channels extend through portions of the block.

Heat sink for enhanced heat dissipation

A test apparatus includes a plurality of sensors placed proximate an airflow generator (e.g. a fan) to measure flow rates in respective sub-regions. The test apparatus also includes a controller (e.g., test software) to calculate an operating point of the airflow generator based on flow rate data from the sensors and to determine if the operating print falls within a predefined operating range of the airflow generator. Based on this determination, the controller is able to indicate if the airflow generator is appropriate for use in a given system chassis.

Selecting an airflow generator for a system

A heat dissipation apparatus has an elongated heat conduit (such as a heat pipe) in thermal communication with a heat spreader for thermally contacting a heat-generating device. The heat spreader has a phase-change mechanism to spread heat within the heat spreader. In one implementation, the phase-change mechanism includes paths for heated vapor flow and cooled liquid flow.

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San Diego, CA, United States of America

David G Wang