International Business Machines Corporation

Airbnb, Inc.

Pritish Ranjan Parida

Timothy Joseph Chainer

Mark Delorman Schultz

Fanghao Yang

Madhusudan K Iyengar

Milnes P David

Joel Abraham Silberman

Evan G Colgan

Thomas J Brunschwiler

Gerard McVicker

Gerd Schlottig

Chin Lee Ong

Arvind Raj Mahankali Sridhar

Robert E Simons

Roger R Schmidt

Alper Buyuktosunoglu

Pradip Bose

Augusto Javier Vega

Hien Phu Dang

Arun Sharma

Andrew R Ranck

Avery W Hagleitner

Elisabeth Andreassen

Leitao Chen

Michael A Gaynes

Qinghuang Lin

Bucknell Chapman Webb

Jeffrey Donald Gelorme

Vinod Kamath

Mark Edward Steinke

David P Graybill

Daby Mousse Sow

Bejoy J Kochuparambil

Marc A Taubenblatt

Mohamed Ghalwash

Ozgur Ozsun

Techniques regarding neuromodulation are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can include a mapping component that can generate a stimulus map by mapping a stimulus parameter to a response from an entity to application of a neuromodulating stimulus, with the first neuromodulating stimulus being applied to the entity based on the first stimulus parameter, to therapeutically cause or prevent a sensation.

Neurostimulation therapy

A cold plate apparatus includes walls that surround an active volume adjacent to an inlet plenum; the walls include an inlet opening at one end of a top side of the inlet plenum and a plenum opening between the inlet plenum and the active volume. Also included is a blocker that partially separates the inlet plenum from the active volume. The blocker is structurally configured to preferentially redirect flow from the inlet plenum into the active volume.

Cold plate with uniform plenum flow

A data center cooling system has an indoor portion wherein heat is absorbed from components in the data center, and an outdoor heat exchanger portion wherein outside air is used to cool a first heat transfer fluid (e.g., water) present in at least the outdoor heat exchanger portion of the cooling system during a first mode. When an appropriate time has been reached to switch from the first mode to a second mode, the outdoor heat exchanger portion of the data cooling system is switched to a second heat transfer fluid, which is a relatively low performance heat transfer fluid (compared to the first fluid). It has a second heat transfer fluid freezing point, lower than the first heat transfer fluid freezing point, and sufficiently low to operate without freezing when the outdoor air temperature drops below a first predetermined relationship with the first heat transfer fluid freezing point.

Data center coolant switch

Obtain a putative design for a vapor chamber lid for an electronic device; iteratively: obtain a steady state solution of governing equations of the putative design, wherein the governing equations include a thermal energy equation in a solid domain of the putative design and include continuity, momentum, and energy equations in vapor and liquid/wick domains of the putative design; modify the putative design in response to a difference between the evaporator temperature of the steady state solution and a threshold value for evaporator temperature; and obtain a new steady state solution of the governing equations for the putative design; and set a final design for the vapor chamber lid when a satisfactory result is obtained for the difference between the evaporator temperature and the threshold value for evaporator temperature.

Vapor chamber lids

A cooling system includes a device to be cooled and a cooling device integrated with the device to be cooled. A cooling volume has cavities and active coolant flow controls configured to adjust coolant flow through the cavities. A reservoir is in fluid communication with the cavities and has a liquid outlet and an inlet for a gas or gas-liquid mixture. A two-phase coolant is in the reservoir and cavities. The two-phase coolant has a phase transition temperature between an ambient temperature and an expected device temperature. A capacitance sensor is configured to determine a coolant capacitance in the cavities. A control module is configured to determine a vapor quality and void fraction of the coolant based on the measured capacitance and to increase coolant flow if the determined vapor quality and void fraction indicate a dry-out condition. A secondary cooling line removes heat from the cooling device.

Active control for two-phase cooling

A method for controlling a cooling system based on a heat dissipation of an electronic module and an ambient air temperature includes determining a combination of individual controls on components of the cooling system that achieve a specific amount of cooling based on a cooling power relationship for the plurality of components, the heat dissipation of the electronic module and the ambient air temperature, and applying the individual controls to the plurality of components.

Energy efficiency based control for a cooling system

A system for identifying and reporting traffic events is presented. Position and motion data from two or more vehicles are uploaded to a data center. The system identifies an accident between first and second vehicles by correlating the motion and position information of the first vehicle with the motion and position information of the second vehicle.

Traffic event recording and recreation

A data center cooling system is operated in a first mode, has an indoor portion wherein heat is absorbed from components in the data center by a heat transfer fluid, and has an outdoor heat exchanger portion and a geothermal heat exchanger portion. The first mode includes ambient air cooling of the heat transfer fluid in the outdoor heat exchanger portion and/or geothermal cooling of the heat transfer fluid in the geothermal heat exchanger portion. Based on an appropriate metric, a determination is made that a switch should be made from the first mode to a second, different, mode; and, responsive thereto, the data center cooling system is switched to the second mode. The second mode includes at least another of ambient air cooling of the heat transfer fluid in the outdoor heat exchanger portion and geothermal cooling of the heat transfer fluid in the geothermal heat exchanger portion.

Energy efficient data center liquid cooling with geothermal enhancement

Techniques for integrating two-phase cooling into a microprocessor chip package lid are provided. In one aspect, a vapor chamber lid device includes: an evaporator plate; a condenser plate attached to the evaporator plate such that a cavity is formed between the evaporator plate and the condenser plate; a thermal insulation layer sandwiched between the evaporator plate and the condenser plate; and a working fluid enclosed within the cavity, wherein the working fluid partially fills the cavity. At least one heat-dissipating device can be placed in thermal contact with the evaporator plate via a thermal interface material. A method is also provided for forming the vapor chamber lid device.

Module lid with embedded two-phase cooling and insulating layer

A method of detecting and identifying road surface defects is provided. Motion and position information is received from a plurality of vehicles. A profile is retrieved for a particular vehicle from a database of vehicle profiles by using an identifier of the particular vehicle. One or more criteria are identified for detecting a particular type of road surface defect based on the retrieved profile of the particular vehicle. Upon determining that the received motion and position data satisfies the identified criteria, a detection of a road surface defect of the particular type and a location associated with the detected road surface defect based on the received position information is reported.

Detection of road surface defects

A Personal Food Database (PFD) that resides on a consumer's mobile device is presented. The PFD maintains an inventory that keeps track of amount of available food items. The mobile device operating the PFD has sensors for measuring the activities or biometric data of the user. The PFD uses the sensor data to assess the nutrition need of the user and to recommend recipes accordingly.

Personal food database

Techniques that facilitate hybrid modeling for a device under test associated with a cooling system (e.g., a two-phase cooling system) are provided. In one example, information indicative of a first model of a device under test associated with a cooling system is determined. Second information indicative of constraints that define values for an operational quantity related to the cooling system is also determined. Information indicative of a second model for the device under test is generated based on the information indicative of the first model and the second information indicative of the one or more constraints. In an aspect, a first simulation process is performed to determine first thermal properties for a first simulation domain associated with the device under test. In another aspect, a second simulation process is performed to determine second thermal properties for a second simulation domain associated with the device under test.

Hybrid modeling for a device under test associated with a two-phase cooling system

Techniques are provided for system level modeling of two-phase cooling systems. In one example, a computer-implemented method comprises determining, by a system operatively coupled to a processor, respective sets of steady state values for parameters at inlet-outlet junctions using a system model, wherein the determining is based on first user input specifying a cooling system design comprising a plurality of part objects, wherein adjacent part objects in a flow direction are connected at the inlet-outlet junctions. The computer-implemented method can also comprise generating, by the system, a graphical display that depicts the respective sets of parameter values at the inlet-outlet junctions.

System level model for pumped two-phase cooling systems

Techniques for autonomously modeling a two-phase cooling architecture are provided. In one example, a computer-implemented method can comprise generating, by a system operatively coupled to a processor, a reduced physics model based on a profile of a heat source and a parameter of a cooling structure. The reduced physics model can provide an output. Also, the computer-implemented method can comprise generating, by the system, a full physics model based on the output. The computer-implemented method can further comprise combining, by the system, the reduced physics model and the full physics model to define an architecture that achieves a flow distribution of a coolant.

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Fishkill, NY, United States of America

Pritish Ranjan Parida