Patents Assigned to Thermax Limited
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Patent number: 11262109Abstract: Envisaged is a regeneration system for a metal hydride heat pump of a damper type. The system comprises a plurality of reactor assembly modules configured to act as a heat pump, an ambient air inlet and a fluid recirculation circuit. The plurality of reactor assembly modules includes first, second, third and fourth metal hydride reactor assembly modules. The fluid recirculation circuit comprises a mixer, a fluid stream switching means, a flow regulating means and an exhaust outlet. The mixer is adapted to mix a portion of a recirculation stream received from the exhaust outlet and the exhaust gas stream to provide a resultant stream. The fluid stream switching means is coupled to the mixer and is adapted to switch flow of the resultant stream as received from the mixer and the ambient air stream in a cyclic manner in a series of half-cycles of operation.Type: GrantFiled: November 18, 2019Date of Patent: March 1, 2022Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Amol Jambukumar Bharamgonda, Sachin Narayan Gunjal, Ramakrishna Ramanath Sonde, Sameer Vasudeo Kulkarni
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Patent number: 10865685Abstract: An exhaust gas flow control system disclosed relates to the field of mechanical engineering. The system reduces exhaust gas back pressure exerted on an internal combustion engine and prevents excessive heat loss in a radiator. The system comprises a flow regulator connected to an outlet of a silencer and configured to selectively direct the flow of exhaust gases to a metal hydride heat pump and/or a tailpipe. The flow of exhaust gases is directed towards the metal hydride heat pump in case of increased cooling requirement in the vehicle, and to the tailpipe in case of no cooling requirement or maintenance of the metal hydride heat pump. In case of reduced cooling requirement, partial flow of exhaust gases is directed to the metal hydride heat pump and the remaining to the tailpipe. A diverter is configured within the flow regulator to selectively direct the flow of exhaust gases.Type: GrantFiled: June 27, 2017Date of Patent: December 15, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Amol Jambukumar Bharamgonda
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Patent number: 10829369Abstract: A system for distribution of hydrogen gas in a metal hydride reactor is disclosed. The system comprises a hydrogen distribution conduit positioned within a metal tube so as to define an annular space between the hydrogen distribution conduit and the outer metal tube. The hydrogen distribution conduit provides a flow passage for the hydrogen gas. A metal sponge matrix containing hydrogen-storing metal powder or hydrogen-storing alloy powder is filled in the annular space. The system provides a more uniform distribution of hydrogen across the particles of the hydrogen-storing metal/alloy powder, provides mechanical support to the hydrogen distribution conduit, improves the thermal conductivity of the powdered metal/alloy bed and reduces the size and production cost of the reactor.Type: GrantFiled: November 26, 2015Date of Patent: November 10, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Pandurang Jalindar Sathe
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Patent number: 10710431Abstract: A control system as disclosed in the present disclosure relates to the field of metal hydride air conditioning systems in vehicles. The control system improves cooling capacity and the coefficient of performance of the metal hydride air conditioner. The control system comprises a plurality of sensors, a memory, a time counter, a controller, and at least one actuator. The controller takes into account the pre-set half cycle time as well as the temperature of the exhaust gases at the outlet of a HT or LT reactor for changing fluid flow, i.e. from hot/cold fluid to the fluid at ambient temperature or vice versa, entering the reactors of the metal hydride air conditioner.Type: GrantFiled: June 26, 2018Date of Patent: July 14, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Sachin Narayan Gunjal
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Patent number: 10605496Abstract: An air changeover system for a metal hydride heat pump is disclosed. The system includes metal hydride reactor modules aligned and separated by a partition; a shell containing the reactor modules, the shell is compartmentalized to define separate insulated chambers for each of the reactor modules; and a bearing assembly supporting the modules at a location about the partition, wherein the bearing assembly rotates said modules about an axis during the absorption and the desorption mode. The system reduces thermal inertia and pressure drop in the heat transfer medium while flowing through the heat pump, to enhance the performance and conserve energy.Type: GrantFiled: November 26, 2015Date of Patent: March 31, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Vilasrao Vyankatrao Dubal, Anil Patki, Ramakrishna Ramanath Sonde
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Patent number: 10571160Abstract: A self-cleaning metal hydride heat recovery system comprising a thermally insulated housing partitioned into at least two thermally insulated chambers, each chamber enclosing a metal hydride reactor assembly containing a regenerating, high-temperature metal hydride alloy, an ambient air inlet adapted to receive an ambient air stream into the housing to be fed to at least one of the two thermally insulated chambers, a fluid recirculation circuit configured to recirculate an exhaust stream as received from an exhaust source, the fluid recirculation circuit comprises a mixer adapted to mix a portion of a recirculation stream and the exhaust stream to provide a resultant stream, fluid stream switching means coupled to the mixer and adapted to switch flow of the resultant stream and the ambient air stream in a cyclic manner, flow regulating means provided downstream of the metal hydride reactor assemblies, and an exhaust outlet.Type: GrantFiled: January 26, 2018Date of Patent: February 25, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Amol Jambukumar Bharamgonda, Sachin Narayan Gunjal, Ramakrishna Ramanath Sonde, Sameer Vasudeo Kulkarni
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Publication number: 20190170044Abstract: An exhaust gas flow control system disclosed relates to the field of mechanical engineering. The system reduces exhaust gas back pressure exerted on an internal combustion engine and prevents excessive heat loss in a radiator. The system comprises a flow regulator connected to an outlet of a silencer and configured to selectively direct the flow of exhaust gases to a metal hydride heat pump and/or a tailpipe. The flow of exhaust gases is directed towards the metal hydride heat pump in case of increased cooling requirement in the vehicle, and to the tailpipe in case of no cooling requirement or maintenance of the metal hydride heat pump. In case of reduced cooling requirement, partial flow of exhaust gases is directed to the metal hydride heat pump and the remaining to the tailpipe. A diverter is configured within the flow regulator to selectively direct the flow of exhaust gases.Type: ApplicationFiled: June 27, 2017Publication date: June 6, 2019Applicant: THERMAX LIMITEDInventors: Devadatta Pundlik NAVALE, Amol Jambukumar BHARAMGONDA
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Patent number: 9239177Abstract: The present invention envisages a hybrid absorption-compression chiller comprising: a vapor-compression system providing refrigeration effect in a primary evaporator (102a) by extracting heat from a medium to be cooled in a condensed primary refrigerant, and a vapor-absorption system in operative communication with the vapor-compression system for receiving primary refrigerant vapors via a compressor (104a), these vapors are cooled by a condensed secondary refrigerant in a secondary evaporator (106a) to provide cold condensed primary refrigerant which is recycled to the vapor-compression system. The hybrid absorption-compression chiller of the present invention is energy-efficient and provides a higher COP in comparison with the conventional chillers.Type: GrantFiled: November 29, 2011Date of Patent: January 19, 2016Assignee: THERMAX LIMITEDInventors: Balu Radhakrishnan, Babu Panneerselvam, Shanmugamuthukumar Sivakaminathan
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Patent number: 9095832Abstract: Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.Type: GrantFiled: July 21, 2014Date of Patent: August 4, 2015Assignee: Thermax LimitedInventors: Apte Ashutosh, Naik Shirish
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Patent number: 8978397Abstract: An apparatus for providing heating and/or refrigeration effect and a method thereof is disclosed which provides simultaneous heating and refrigeration, only heating or only refrigeration, using a double-effect vapor absorption cycle or a single-effect vapor absorption cycle. The present invention comprises providing a heat input to an absorbent in a generator to obtain a concentrated absorbent which is fed to a set of absorbers which are located in co-operation with a set of evaporators provided with a condensed refrigerant, to obtain heating and/or refrigeration effect. The heat/energy used during the process is recovered by a plurality of heat exchangers such that the wastage of energy and utilities is minimized. The present invention substantially reduces the CO2 emissions, thus is eco-friendly.Type: GrantFiled: April 15, 2010Date of Patent: March 17, 2015Assignee: Thermax LimitedInventors: Balu Radhakrishnan, Babu Panneerselvam, Swapna Kulkarni
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Publication number: 20140328722Abstract: Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.Type: ApplicationFiled: July 21, 2014Publication date: November 6, 2014Applicant: THERMAX LIMITEDInventors: Apte Ashutosh, Naik Shirish
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Patent number: 8839635Abstract: The absorption chiller-heater apparatus of present invention utilizes a portion of direct heat, used to heat water, for providing the refrigeration effect. The external heat input required for providing refrigeration is minimal; hence, the efficiency of the apparatus is increased by 30-40% over the conventional systems. Further, as the quantum of the external heat source required for a new cycle is reduced, the size of the high temperature generator required, is smaller, which results in lower capital costs. The apparatus provides chilled water which can be used for various industrial purposes. The absorption chiller-heater reduces CO2 emissions and utilizes a single arrangement to produce both heating and refrigeration effect. Thus, additional electrical and heat input or separate components are not required.Type: GrantFiled: February 23, 2011Date of Patent: September 23, 2014Assignee: Thermax LimitedInventors: Blau Radhakrishnan, Babu Panneerselvam, Swapna Kulkarni
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Patent number: 8816026Abstract: Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.Type: GrantFiled: February 4, 2013Date of Patent: August 26, 2014Assignee: Thermax LimitedInventors: Apte Ashutosh, Naik Shirish
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Publication number: 20140080981Abstract: Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.Type: ApplicationFiled: February 4, 2013Publication date: March 20, 2014Applicant: Thermax LimitedInventors: Apte Ashutosh, Naik Shirish
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Publication number: 20130269373Abstract: The present invention envisages a hybrid absorption-compression chiller comprising: a vapor-compression system providing refrigeration effect in a primary evaporator (102a) by extracting heat from a medium to be cooled in a condensed primary refrigerant, and a vapor-absorption system in operative communication with the vapor-compression system for receiving primary refrigerant vapors via a compressor (104a), these vapors are cooled by a condensed secondary refrigerant in a secondary evaporator (106a) to provide cold condensed primary refrigerant which is recycled to the vapor-compression system. The hybrid absorption-compression chiller of the present invention is energy-efficient and provides a higher COP in comparison with the conventional chillers.Type: ApplicationFiled: November 29, 2011Publication date: October 17, 2013Applicant: THERMAX LIMITEDInventors: Balu Radhakrishnan, Babu Panneerselvam, Shanmugamuthukumar Sivakaminathan
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Publication number: 20120324925Abstract: A triple-effect vapor absorption refrigeration system is disclosed. The system comprises a high temperature generator, a medium temperature generator, and a low temperature generator, for concentrating a dilute Li—Br solution from an absorber, through a flow path from the high temperature generator to the low temperature generator via the medium temperature generator. In the system maximum Li—Br solution temperature and maximum Li—Br solution concentration does not occur simultaneously, hence, Li—Br corrosion rate is reduced and minimum non-condensable gases are generated, this helps in maintaining vacuum during operation thus providing a smoother operation.Type: ApplicationFiled: June 22, 2012Publication date: December 27, 2012Applicant: Thermax LimitedInventors: Balu Radhakrishnan, Babu Panneerselyam, Swapna Kulkarni
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Publication number: 20110225991Abstract: The absorption chiller-heater apparatus of present invention utilizes a portion of direct heat, used to heat water, for providing the refrigeration effect. The external heat input required for providing refrigeration is minimal; hence, the efficiency of the apparatus is increased by 30-40% over the conventional systems. Further, as the quantum of the external heat source required for a new cycle is reduced, the size of the high temperature generator required, is smaller, which results in lower capital costs. The apparatus provides chilled water which can be used for various industrial purposes. The absorption chiller-heater reduces CO2 emissions and utilizes a single arrangement to produce both heating and refrigeration effect. Thus, additional electrical and heat input or separate components are not required.Type: ApplicationFiled: February 23, 2011Publication date: September 22, 2011Applicant: THERMAX LIMITEDInventors: Balu RADHAKRISHNAN, Babu PANNEERSELVAM, Swapna KULKARNI
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Publication number: 20100270005Abstract: An apparatus for providing heating and/or refrigeration effect and a method thereof is disclosed which provides simultaneous heating and refrigeration, only heating or only refrigeration, using a double-effect vapor absorption cycle or a single-effect vapor absorption cycle. The present invention comprises providing a heat input to an absorbent in a generator to obtain a concentrated absorbent which is fed to a set of absorbers which are located in co-operation with a set of evaporators provided with a condensed refrigerant, to obtain heating and/or refrigeration effect. The heat/energy used during the process is recovered by a plurality of heat exchangers such that the wastage of energy and utilities is minimized. The present invention substantially reduces the CO2 emissions, thus is eco-friendly.Type: ApplicationFiled: April 15, 2010Publication date: October 28, 2010Applicant: THERMAX LIMITEDInventors: Balu RADHAKRISHNAN, Babu PANNEERSELVAM, Swapna KULKARNI
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Publication number: 20090020477Abstract: Method for removing Arsenic from water. The method includes providing resin based medium which contains Arsenate adsorbent agent and Arsenite oxidizing agent. The method also includes providing for water containing Arsenic to come in contact with the resin based medium. Corresponding composition for the Arsenic removal medium is also provided. Method for preparing the corresponding Arsenic removal medium is also provided.Type: ApplicationFiled: April 3, 2008Publication date: January 22, 2009Applicant: THERMAX LIMITEDInventors: Gunesh B. Dhekane, Kalyan M. Mudaliar, Kiran V. Deshpande
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Patent number: 6125794Abstract: A heat recovery system, the system having a fuel burner assembly. The fuel burner assembly having a pilot burner, an ignition source such as, an ignition transformer, a turbo compressed air inlet duct, a primary housing accommodating a burner rod and nozzle assembly and a secondary housing made of a combustion chamber, having an upstream secondary air mixing assembly and an air diffuser assembly.The fuel burner assembly being operably connected down stream to a heat transfer and recovery system having one or more, preferably two, heat exchangers of the convective heat exchange type and an exhaust or stack for the exit of spent flue gases. The fuel burner assembly being operably connected upstream to a turbo charger/turbo compressor. The turbo charger/turbo compressor being provided with a start up mechanism, the start up mechanism comprising an air eductor assembly, external air supply feed line, an external fuel supply source, a liquid/gaseous fuel burner and a mixing chamber assembly.Type: GrantFiled: August 11, 1998Date of Patent: October 3, 2000Assignee: Thermax LimitedInventors: Narendra Dattatraya Joshi, Dilip Waman Bapat, Alten Carmo Lobo, Samir Vasudeo Kulkarni, Charles Philominraj