# US 12,010,819 B2 · Energy efficient liquid-cooled datacenters > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,819 B2 - Document ID: US12010819B2 - Status: Granted - Kind: B2 - Application number: 17/237,802 - Filed: 2021-04-22 - Published: 2022-10-27 - Granted: 2024-06-11 - Earliest claimed: 2021-04-22 - Assignees: NVIDIA Corporation - Applicants: Nvidia Corporation - Inventors: Ali Heydari - Web page: https://patentgrep.com/patent/US12010819B2 ## CPC - H01M 8/04007: related to heat exchange - H05K 7/208: {Liquid cooling with phase change} - G06F 1/20: Cooling means - G06F 1/26: Power supply means, e.g. regulation thereof (for memories G11C) - H01M 8/04052: {Storage of heat in the fuel cell system} - H01M 8/04097: {with recycling of the reactants (H01M8/04119, H01M8/04104 take precedence)} - H01M 8/04156: {with product water removal} - H05K 7/1485: {Servers; Data center rooms, e.g. 19-inch computer racks} - H01M 2250/10: Fuel cells in stationary systems, e.g. emergency power source in plant - Y02E 60/50: Fuel cells - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Systems and methods for operating a datacenter are disclosed. In at least one embodiment, a power delivery system includes one or more fuel cells to provide a source of electrical power for a datacenter, where waste heat produced by a fuel cell is to be captured and provided to an absorption chiller to produce a cooled liquid for use in a cooling system for this datacenter. ## Claims ### Claim 1 A system, comprising: a power delivery system including one or more fuel cells to provide a source of electrical power for a datacenter, waste heat produced by the one or more fuel cells to be captured and provided to an absorption chiller to produce a cooled liquid for cooling one or more computing components in the datacenter by cold plate cooling or by immersion cooling. ### Claim 2 (depends on 1) The system of claim 1, wherein the one or more fuel cells accept natural gas or bio-gas for use in generating the electrical power. ### Claim 3 (depends on 1) The system of claim 1, further comprising: one or more heat exchangers positioned proximate the one or more fuel cells to capture the waste heat produced by the one or more fuel cells. ### Claim 4 (depends on 1) The system of claim 1, wherein the absorption chiller is to further receive waste heat extracted from one or more computing devices of the datacenter, wherein the waste heat produced by the one or more fuel cells is combined with the waste heat extracted from the one or more computing devices to provide at least a minimum amount of heat for operation of the absorption chiller to provide at least a minimum amount of cooling of the cooled liquid. ### Claim 5 (depends on 1) The system of claim 1, wherein the datacenter is able to receive additional electrical power from at least one source external to the datacenter. ### Claim 6 (depends on 1) The system of claim 1, further comprising: one or more power distribution units to receive the electrical power from at least the one or more fuel cells and distribute the electrical power to one or more electrical devices in the datacenter. ### Claim 7 (depends on 1) The system of claim 1, further comprising: one or more controllers to receive at least one of operational or environmental data for the datacenter and to provide instructions for adjusting at least one operational parameter of the power delivery system or a cooling system for the datacenter. ### Claim 8 (depends on 1) The system of claim 1, wherein the absorption chiller is a lithium bromide absorption chiller that requires at least a minimum amount of heat to provide at least a minimum amount of heat extraction for the cooled liquid. ### Claim 9 (depends on 1) The system of claim 1, further comprising: a flow path to circulate the cooled liquid to one or more components of the datacenter, the flow path further to return heated liquid including waste heat extracted from the one or more components. ### Claim 10 A datacenter management system, comprising: a power delivery system including one or more fuel cells to provide a source of electrical power for a datacenter; and a cooling system including one or more cooling loops to cool at least a portion of the datacenter, the cooling system further including one or more absorption chillers to receive waste heat, captured from the one or more fuel cells, to produce cooled liquid to be circulated through the one or more cooling loops to cool one or more computing components in the datacenter by cold plate cooling or by immersion cooling. ### Claim 11 (depends on 10) The datacenter management system of claim 10, wherein the one or more fuel cells accept natural gas or bio-gas for use in generating the electrical power. ### Claim 12 (depends on 10) The datacenter management system of claim 10, further comprising: one or more heat exchangers positioned proximate the one or more fuel cells to capture the waste heat produced by the one or more fuel cells. ### Claim 13 (depends on 10) The datacenter management system of claim 10, wherein the one or more absorption chillers are to further receive waste heat extracted from one or more computing devices of the datacenter, wherein the waste heat produced by the one or more fuel cells is combined with the waste heat extracted from the one or more computing devices to provide at least a minimum amount of heat for operation of the one or more absorption chillers to provide at least a minimum amount of cooling of the cooled liquid. ### Claim 14 (depends on 10) The datacenter management system of claim 10, wherein the datacenter is able to receive additional electrical power from at least one additional source external to the datacenter. ### Claim 15 (depends on 10) The datacenter management system of claim 10, further comprising: one or more power distribution units to receive the electrical power from at least the one or more fuel cells and distribute the electrical power to one or more electrical devices in the datacenter. ### Claim 16 (depends on 1) The system of claim 1, wherein the waste heat produced by the one or more fuel cells is provided to the absorption chiller by a first loop and the cooled liquid is provided to the one or more computing components by a second loop.