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Researchers Submit Patent Application, "Thermally Determining Flow And/Or Heat Load Distribution in Parallel Paths", for Approval

June 19, 2014



By a News Reporter-Staff News Editor at Computer Weekly News -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Chainer, Timothy J. (Putnam Valley, NY); Iyengar, Madhusudan K. (Woodstock, NY); Parida, Pritish R. (Fishkill, NY), filed on November 28, 2012, was made available online on June 5, 2014.

The patent's assignee is International Business Machines Corporation.

News editors obtained the following quote from the background information supplied by the inventors: "This disclosure relates to the thermodynamic arts, and more particularly, to fluid flow and/or heat transfer determination in cooling systems.

"Liquid cooling is one method of cooling computer equipment in high performance environments such as server farms. The liquid coolant may be used to cool components through the use of cold plates, cold rails, or the like, which are disposed in thermal communication with the components, such as a processor or one or more Dual Inline Memory Modules (DIMMs)."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "According to an exemplary embodiment of the present disclosure, a method includes obtaining calibration data for at least one sub-component in a heat transfer assembly, wherein the calibration data comprises at least one indication of coolant flow rate through the sub-component for a given surface temperature delta of the sub-component and a given heat load of the sub-component, determining a measured heat load into the sub-component, determining a measured surface temperature delta of the sub-component, and determining a coolant flow distribution in a first flow path comprising the sub-component from the calibration data according to the measured heat load and the measured surface temperature delta of the sub-component.

"According to an exemplary embodiment of the present disclosure, a method includes selecting a sub-component, disposing the sub-component in a flow path, recording, simultaneously, a plurality of parameters of the sub-component disposed in the flow path, wherein the plurality of parameters include a heat load applied to a sub-component, a surface temperature delta of the sub-component, and a flow rate of a coolant through the flow path, and generating calibration data based on the plurality of parameters of the sub-component, the calibration data configured to return an indication of coolant flow distribution through the sub-component for a given surface temperature delta of the sub-component and a given heat load of the sub-component.

"According to an exemplary embodiment of the present disclosure, a method includes obtaining calibration data for a plurality of sub-components in a heat transfer assembly, wherein the calibration data comprises at least one indication of coolant flow rate through each of the plurality of sub-components for a given surface temperature delta of each of the plurality of sub-components and a given heat load into each of the plurality of sub-components, receiving coolant flow distribution data in the heat transfer assembly for respective flow paths, each path including at least one of the plurality of sub-components, determining a measured surface temperature delta of each of the plurality of sub-components, determining a system level coolant flow rate for the heat transfer assembly, and determining a heat load distribution in the heat transfer assembly between each of the respective flow paths according to the calibration data, the coolant flow distribution, and the measured surface temperature delta of each of the plurality of sub-components.

"According to an embodiment of the present disclosure, a computer program product for determining a coolant flow rate in a heat transfer assembly comprises a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising computer readable program code configured to perform the determination of the coolant flow rate.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

"Preferred embodiments of the present disclosure will be described below in more detail, with reference to the accompanying drawings:

"FIG. 1 is a block diagram depicting an exemplary parallel flow path for a liquid coolant in a hybrid air/liquid cooled computer system according to an embodiment of the present disclosure;

"FIG. 2 is a flow diagram of a method for determining a flow distribution and heat load distribution among parallel flow and heat transfer paths according to an embodiment of the present disclosure;

"FIG. 3 schematically shows the calibration of a sub-component according to an embodiment of the present disclosure;

"FIG. 4 schematically represents the estimation of the flow distribution according to an embodiment of the present disclosure;

"FIG. 5 schematically represents the system level thermal test with similar heat loads at each sub-component according to an embodiment of the present disclosure;

"FIG. 6 is a graph illustrating a flow rate distribution between the parallel flow paths according to an embodiment of the present disclosure; and

"FIG. 7 is a block diagram depicting an exemplary computer system for performing a method for determining a flow distribution and heat load distribution among parallel flow and heat transfer paths in cooling assemblies according to an embodiment of the present disclosure."

For additional information on this patent application, see: Chainer, Timothy J.; Iyengar, Madhusudan K.; Parida, Pritish R. Thermally Determining Flow And/Or Heat Load Distribution in Parallel Paths. Filed November 28, 2012 and posted June 5, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=3308&p=67&f=G&l=50&d=PG01&S1=20140529.PD.&OS=PD/20140529&RS=PD/20140529

Keywords for this news article include: International Business Machines Corporation.

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Source: Computer Weekly News


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