Abstract:
A method for commissioning sensors includes determining correlation data between the sensors and a plurality of actuators. The correlation data is based upon conditions detected by the sensors at a plurality of actuator settings. Correlation indexes are calculated from the correlation data, where a correlation index for a sensor is a function of the plurality of actuator settings and a particular actuator. In addition, each of the sensors is assigned to at least one of a plurality of actuator families based upon the calculated correlation indexes of the sensors to thereby commission the sensors.
Abstract:
In a method of workload placement based upon capacity utilizations of a plurality of CRAC units, the provisioning of the plurality of CRAC units is determined and the zone of influence for each of the plurality of CRAC units is also determined based upon the provisioning of the plurality of CRAC units. It is determined whether a CRAC unit of the plurality of CRAC units is at least one of near failure or has failed. In addition, the workload is shifted from a zone of influence of at least one CRAC unit to a zone of influence of another of the plurality of CRAC units in response to a determination that a CRAC unit is at least one of near failure or has failed.
Abstract:
A component cooling system including a sprayer configured to eject a stream of cooling fluid and a stream deflector to control deflection of the stream. The sprayer may be continuous or incremental. Excess spray may be deflected into a gutter configured to obstruct cooling fluid from striking the component. The stream deflector may operate using a contact surface, controllable orifice heaters, and/or electrodes is configured to deflect the stream in one or more degrees of freedom. Multiple sprayers may have overlapping spray patterns for redundancy.
Abstract:
A cooling system including a thermosyphon subsystem and a spray cooling subsystem, each being configured to evaporatively cool a component, and a controller configured to selectively operate the spray cooling subsystem based on the cooling requirements of the component. The controller controls a valve limiting the operation of the thermosyphon when the spray cooling system is active. The component is configured to run in a plurality of performance states including a low power state and a high power state. The spray cooling system operates when the component is in the high power state. The controller can order the component to operate in a lower power state if the cooling systems are inadequate to the cooling needs. The cooling needs are determined with a component temperature sensor, a vapor temperature sensor, a vapor pressure sensor, or a power usage sensor.
Abstract:
A method of operating a multi-effect cooling system uses heat generated from an engine having an exhaust system and cooling system. The multi-effect cooling system includes, a primary desorber and a secondary desorber. The primary desorber is heated using heat from the exhaust system. The secondary desorber is heated using heat from the cooling system.
Abstract:
A method of workload placement among servers includes receipt of a workload request. The method also includes selection of a group of servers from a set of servers capable of performing the requested workload. In addition, server workload indexes, which are ratios of temperature rises due to re-circulation load for the servers in the group of servers to temperature rises due to re-circulation load for the set of servers, of the servers in the group of servers are calculated. Moreover, the workload is placed on one or more of the servers in the group of servers based upon the server workload indexes of the servers in the group of servers.
Abstract:
A method for controlling one or more computer room air conditioning (CRAC) units for energy efficient operation, in which, the temperature of the air returned (Trat) into the one or more CRAC units and the temperature of the air supplied (Tsat) by the one or more CRAC units is detected. The caloric heat transfer level (Q) is calculated based upon the Trat and the Tsat and it is determined whether the Q is within a predetermined setpoint caloric heat transfer range. In addition, at least one operation of the one or more CRAC units is reduced in response to the Q being within the predetermined setpoint caloric heat transfer range to thereby increase the efficiencies of the one or more CRAC units.
Abstract:
A system for workload placement among data centers includes a plurality of grid resource allocation managers (GRAMs), wherein the GRAMs are configured to obtain information from the data centers. The system also includes an information service configured to receive information from the plurality of GRAMs and a broker configured to receive an application request and to determine resource requirements from the application request, wherein the broker is configured to determine which of the data centers contains adequate resources to perform the requested application. The system further includes a co-allocator configured to receive information pertaining to the data centers having the adequate resources, wherein the co-allocator is further configured to select one of the data centers to perform the requested application based upon energy efficiency characteristics of the data centers.
Abstract:
An enclosure forms a plurality of tiers vertically stacked in a longitudinal dimension. Each tier is a 1U modular computer system having a computer chassis configured for mounting in the multi-tiered support, and computer components that need cooling within the computer chassis. An evaporator is in thermal communication with at least one of the computer components, and vaporizes a coolant to cool that component. A condenser dissipates heat from the coolant vapor, and provides liquid coolant back to the evaporator. The condenser directs liquid coolant gravitationally downward, making the condenser and evaporator gravity driven. An air mover within the chassis cools the condenser, blows air across other components needing cooling, and removes heated air from the chassis.
Abstract:
A method of reducing energy consumption in a multi-effect absorption system. The multi-effect absorption system includes a primary generator for a primary desorption process and a secondary generator for a secondary desorption process. In the method, heat is provided to the primary generator from a primary heat source for the primary desorption process. Heat generating devices are cooled with the multi-effect absorption system while the generated heat is collected and transferred to the to the secondary generator for use in the secondary desorption process thereby reducing the amount of heat required from the primary heat source and reducing the energy consumption of the absorption system.