Patents by Inventor Mahendhra Muthuramalingam
Mahendhra Muthuramalingam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9734479Abstract: A method for determining an operating set point for a combined cycle power plant, the method includes: simulating the operation of the power plant; correcting the simulation of the operation of the power plant; optimizing the simulation of the operation by simulating the operation at different operating settings and selecting at least one of the operating settings as being optimal, and generating the operating set point based on the optimized simulation of the power plant.Type: GrantFiled: February 20, 2014Date of Patent: August 15, 2017Assignee: General Electric CompanyInventors: Thomas P. Schmitt, Awadesh Kumar Tiwari, Mahendhra Muthuramalingam, Mahesh Kumar Asati
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Patent number: 9458014Abstract: A method and system for capturing and isolating carbon dioxide and hydrogen gases from a high temperature synthesis gas stream containing a substantial amount of CO and sulfur compounds for use as a “clean” supplemental fuel, comprising the steps of reducing the temperature of the high temperature synthesis gas stream, removing substantially all of the sulfur compounds present in the synthesis gas, converting a first portion of CO to carbon dioxide in a first high temperature water-gas shift reaction, converting a second portion of CO to carbon dioxide using a second low temperature water-gas shift reaction, converting a third portion of CO to carbon dioxide using a third low temperature water-gas shift reaction and then separating out substantially all hydrogen present in the treated synthesis gas stream.Type: GrantFiled: December 28, 2012Date of Patent: October 4, 2016Assignee: General Electronic CompanyInventors: Thirumala Reddy Nagarjuna Reddy, Ashok Kumar Anand, Mahendhra Muthuramalingam
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Patent number: 9316152Abstract: A cooling gas flow control device for a turbine rotor that is internally located between the compressor and the turbine section of a turbine is disclosed. The cooling gas flow control device has a shape memory material that is used to actively adjust the cooling gas flow to internal parts of the turbine section between, including the buckets.Type: GrantFiled: June 13, 2012Date of Patent: April 19, 2016Assignee: General Electric CompanyInventors: Thangaraj Subbareddyar, Mayur Abhay Keny, Mahendhra Muthuramalingam
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Patent number: 9279340Abstract: The present application provides a cooling system for a gas turbine. The cooling system may include a source of CO2, a stator blade cooling system positioned about a casing of the gas turbine and in communication with the source of CO2 and a number of stator blades, and a rotor blade cooling system positioned about a rotor shaft of the gas turbine and in communication with the source of CO2 and a number of rotor blades. A first portion of a flow of CO2 may flow through the stator blade cooling system and returns to the source of CO2 in a first closed loop and a second portion of the flow of CO2 may flow through the rotor blade cooling system and returns to the source of CO2 in a second closed loop.Type: GrantFiled: May 9, 2013Date of Patent: March 8, 2016Assignee: General Electric CompanyInventors: Mahendhra Muthuramalingam, Ashok Kumar Anand, Veerappan Muthaiah
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Patent number: 9188028Abstract: The present application provides a gas turbine system. The gas turbine system may include a gas turbine engine producing a flow of exhaust gases, a heat recovery steam generator with a reheater and an evaporator in communication with the flow of exhaust gases, and a gas flow control system for diverting a first portion of the flow of exhaust gases away from the reheater and towards the evaporator.Type: GrantFiled: October 5, 2012Date of Patent: November 17, 2015Assignee: General Electric CompanyInventors: Lakshmanan Esakki, Mahendhra Muthuramalingam
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Publication number: 20150235150Abstract: A method for determining an operating set point for a combined cycle power plant, the method includes: simulating the operation of the power plant; correcting the simulation of the operation of the power plant; optimizing the simulation of the operation by simulating the operation at different operating settings and selecting at least one of the operating settings as being optimal, and generating the operating set point based on the optimized simulation of the power plant.Type: ApplicationFiled: February 20, 2014Publication date: August 20, 2015Applicant: General Electric CompanyInventors: Thomas Schmitt, Awadesh Kumar Tiwari, Mahendhra Muthuramalingam, Mahesh Kumar Asati
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Publication number: 20140182300Abstract: A method and system for capturing and isolating carbon dioxide and hydrogen gases from a high temperature synthesis gas stream containing a substantial amount of CO and sulfur compounds for use as a “clean” supplemental fuel, comprising the steps of reducing the temperature of the high temperature synthesis gas stream, removing substantially all of the sulfur compounds present in the synthesis gas, converting a first portion of CO to carbon dioxide in a first high temperature water-gas shift reaction, converting a second portion of CO to carbon dioxide using a second low temperature water-gas shift reaction, converting a third portion of CO to carbon dioxide using a third low temperature water-gas shift reaction and then separating out substantially all hydrogen present in the treated synthesis gas stream.Type: ApplicationFiled: December 28, 2012Publication date: July 3, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Thirumala Reddy Nagarjuna Reddy, Ashok Kumar ANAND, Mahendhra MUTHURAMALINGAM
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Publication number: 20140096535Abstract: The present application provides a gas turbine system. The gas turbine system may include a gas turbine engine producing a flow of exhaust gases, a heat recovery steam generator with a reheater and an evaporator in communication with the flow of exhaust gases, and a gas flow control system for diverting a first portion of the flow of exhaust gases away from the reheater and towards the evaporator.Type: ApplicationFiled: October 5, 2012Publication date: April 10, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Lakshmanan Esakki, Mahendhra Muthuramalingam
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Publication number: 20140060062Abstract: Change in swirl of gas turbine exhaust gases at off-design conditions is a key driver of exhaust diffuser inefficiency that adversely impact the gas turbine performance. Conventional ways to control swirl such as blowing, suction, and vortex generation are undesirable since they require parasitic power, are complex to design, and dilute the exhaust gas energy. To address such short comings, shape memory devices are incorporated into struts of an exhaust diffuser of a gas turbine. The shape memory devices change shape in accordance with heat, which can be applied through memory device heaters. By controlling the memory device heaters, the heat applied to the shape memory devices can be controlled. The shapes of the struts can be altered through altering the shapes of the memory device in consideration of load conditions to increase the efficiency.Type: ApplicationFiled: September 4, 2012Publication date: March 6, 2014Applicant: General Electric CompanyInventors: Thangaraj Subbareddyar, Mahendhra Muthuramalingam, Nachiket Chilhatey
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Patent number: 8641812Abstract: According to various embodiments, a system includes a gas treatment system configured to treat a gas and a controller configured to control flow of a heat transfer fluid between a solar thermal collector and the gas treatment system. Conduits may interconnect the gas treatment system and the solar thermal collector.Type: GrantFiled: May 17, 2010Date of Patent: February 4, 2014Assignee: General Electric CompanyInventors: Mahendhra Muthuramalingam, Veerappan Muthaiah
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Publication number: 20130336757Abstract: A cooling gas flow control device for a turbine rotor that is internally located between the compressor and the turbine section of a turbine is disclosed. The cooling gas flow control device has a shape memory material that is used to actively adjust the cooling gas flow to internal parts of the turbine section between, including the buckets.Type: ApplicationFiled: June 13, 2012Publication date: December 19, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Thangaraj Subbareddyar, Mayur Abhay Keny, Mahendhra Muthuramalingam
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Publication number: 20130269347Abstract: A combined power and water production system includes a steam generator, a water production facility, and a heater to heat water and to provide the heated water to the steam generator to generate steam.Type: ApplicationFiled: April 12, 2012Publication date: October 17, 2013Applicant: GENERAL ELECTRIC COMPANYInventor: Mahendhra Muthuramalingam
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Publication number: 20130251509Abstract: The present application provides a cooling system for a gas turbine. The cooling system may include a source of CO2, a stator blade cooling system positioned about a casing of the gas turbine and in communication with the source of CO2 and a number of stator blades, and a rotor blade cooling system positioned about a rotor shaft of the gas turbine and in communication with the source of CO2 and a number of rotor blades. A first portion of a flow of CO2 may flow through the stator blade cooling system and returns to the source of CO2 in a first closed loop and a second portion of the flow of CO2 may flow through the rotor blade cooling system and returns to the source of CO2 in a second closed loop.Type: ApplicationFiled: May 9, 2013Publication date: September 26, 2013Applicant: General Electric CompanyInventors: Mahendhra Muthuramalingam, Ashok Kumar Anand, Veerappan Muthaiah
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Patent number: 8418467Abstract: A system is disclosed including a low pressure steam turbine; an air-cooled condenser (ACC) in fluid connection with the low pressure (LP) steam turbine, the ACC for receiving a portion of steam from an exhaust of the LP steam turbine; a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine; and a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater.Type: GrantFiled: June 29, 2010Date of Patent: April 16, 2013Assignee: General Electric CompanyInventors: Mahendhra Muthuramalingam, Veerappan Muthaiah, Raub Warfield Smith
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Publication number: 20130046519Abstract: A method of modeling a power plant including a plurality of major components including at least one of a Heat recovery Steam Generator (HRSG), a steam turbomachine, a condenser, and a cooling system includes establishing a desired power plant output criteria, selecting a plurality of major components to form the power plant, running a model module to create thermodynamic model of the major components to form a power plant model, running an equation module to develop a set of equations for the power plant model, running a performance module to solve the set of equations for the power plant model, running a cost module to determine a cost of the power plant model, determining whether the power plant model meets the desired power plant output criteria, and generating a result that indicates the performance and cost of the power plant.Type: ApplicationFiled: August 19, 2011Publication date: February 21, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Lakshmanan Esakki, Veerappan Muthaiah, Mahendhra Muthuramalingam, Thillairajan Selvarajan
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Patent number: 8268023Abstract: The present application thus provides an integrated gasification combined cycle system. The integrated gasification combined cycle system may include a water gas shift reactor system and a heat recovery steam generator. The water gas shift reactor system may include a recirculation system with a recirculation heat exchanger to heat a flow of syngas. The heat recovery steam generator may include a diverted water flow in communication with the recirculation heat exchanger.Type: GrantFiled: April 26, 2010Date of Patent: September 18, 2012Assignee: General Electric CompanyInventors: Ashok Kumar Anand, Mahendhra Muthuramalingam, Jegadeesan Maruthamuthu
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Publication number: 20110314819Abstract: A system is disclosed including a low pressure steam turbine; an air-cooled condenser (ACC) in fluid connection with the low pressure (LP) steam turbine, the ACC for receiving a portion of steam from an exhaust of the LP steam turbine; a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine; and a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater.Type: ApplicationFiled: June 29, 2010Publication date: December 29, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Mahendhra Muthuramalingam, Veerappan Muthaiah, Raub Warfield Smith
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Publication number: 20110277981Abstract: According to various embodiments, a system includes a gas treatment system configured to treat a gas and a controller configured to control flow of a heat transfer fluid between a solar thermal collector and the gas treatment system. Conduits may interconnect the gas treatment system and the solar thermal collector.Type: ApplicationFiled: May 17, 2010Publication date: November 17, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Mahendhra Muthuramalingam, Veerappan Muthaiah
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Publication number: 20110260113Abstract: The present application thus provides an integrated gasification combined cycle system. The integrated gasification combined cycle system may include a water gas shift reactor system and a heat recovery steam generator. The water gas shift reactor system may include a recirculation system with a recirculation heat exchanger to heat a flow of syngas. The heat recovery steam generator may include a diverted water flow in communication with the recirculation heat exchanger.Type: ApplicationFiled: April 26, 2010Publication date: October 27, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Ashok Kumar Anand, Mahendhra Muthuramalingam, Jegadeesan Maruthamuthu
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Publication number: 20110020188Abstract: An integrated gasification combined cycle (IGCC) system involving CO2 capture is provided comprising a CO2-selective membrane, a pre-compressor, and a sulfur gas removal system to selectively remove H2S and CO2 from shifted syngas, wherein the pre-compressor increases the permeate stream from the CO2-selective membrane from a first pressure to a second pressure prior to entering the sulfur removal system. Also provided herein is a method of maintaining a substantially constant pressure in a sulfur removal system, comprising introducing a feed gas stream to a CO2-selective membrane for separation into a syngas rich stream and a permeate gas stream, wherein the permeate gas stream is at a first pressure; increasing the permeate gas stream from the first pressure to a second pressure; and introducing the permeate gas stream at the second pressure to a sulfur removal system downstream of the pre-compressor.Type: ApplicationFiled: July 24, 2009Publication date: January 27, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Mahendhra Muthuramalingam, Ashok Kumar Anand, Anthony Yu-Chung Ku, Chetan Madhav Joshi, Joseph J.