Patents by Inventor Mahesh Valiya Naduvath
Mahesh Valiya Naduvath 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: 11079122Abstract: A modular water based heating and cooling system for providing chilled or heated water to terminal devices in a building to heat/cool individual zones in the building. The system includes a flow control device in fluid communication with a riser chilled water supply line, a riser chilled water return line, a riser heated water supply line, and a riser heated water return line. The flow control device includes first control valves and second control valves. Terminal device supply lines extend from the flow control device and are connected to respective first control valves. Terminal device return lines extend from the flow control device and are connected to respective second control valves. The first control valves and the second control valves cooperate to supply required chilled water or heated water through the terminal device supply lines to terminal devices based on the cooling/heating requirements of the terminal devices.Type: GrantFiled: March 4, 2014Date of Patent: August 3, 2021Assignee: Johnson Controls Technology CompanyInventors: Ian Michael Casper, Dirck Lyon, Walter E. Doll, John R. Schwartz, Martin Yu, Li Li Mow, Rick Van Buren, Roberto De Paco, Jr., John Evan Bade, Cesar Serrano, Daniela Bilmanis, Satheesh Kulankara, Justin P. Kauffman, Brian Smith, Mark A. Adams, Martin L. Doll, Jr., Nicholas Staub, Richard W. Nadeau, William L. Kopko, Chris Paraskevakos, Matthew J. Shaub, Sean Gao, Christian C. Rudio, Mahesh Valiya Naduvath, Jonathan D. West
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Publication number: 20160003561Abstract: A modular water based heating and cooling system for providing chilled or heated water to terminal devices in a building to heat/cool individual zones in the building. The system includes a flow control device in fluid communication with a riser chilled water supply line, a riser chilled water return line, a riser heated water supply line, and a riser heated water return line. The flow control device includes first control valves and second control valves. Terminal device supply lines extend from the flow control device and are connected to respective first control valves. Terminal device return lines extend from the flow control device and are connected to respective second control valves. The first control valves and the second control valves cooperate to supply required chilled water or heated water through the terminal device supply lines to terminal devices based on the cooling/heating requirements of the terminal devices.Type: ApplicationFiled: March 4, 2014Publication date: January 7, 2016Inventors: Ian Michael CASPER, Dirck LYON, Walter E. DOLL, John R. SCHWARTZ, Martin YU, Li Li MOW, Rick VAN BUREN, Roberto DE PACO, John Evan BADE, Cesar SERRANO, Daniela BILMANIS, Satheesh KULANKARA, Justin P. KAUFFMAN, Brian SMITH, Mark A. ADAMS, Martin L. DOLL, Jr., Nicholas STAUB, Richard W. NADEAU, William L. KOPKO, Chris PARASKEVAKOS, Matthew J. SHAUB, Sean GAO, Christian C. RUDIO, Mahesh Valiya NADUVATH, Jonathan D. WEST
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Patent number: 8561427Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and multi-slab heat exchangers are provided that include fluid connections for transmitting fluid between groups of tubes. The fluid connections may include generally tubular members fluidly connected to manifold sections. The fluid connections also may include partitioned manifolds containing tubes of different heights. Multichannel tubes are also provided that include a bent section configured to locate a flow path near a leading edge of a tube within one section and near a trailing edge of the tube within another section.Type: GrantFiled: April 18, 2011Date of Patent: October 22, 2013Assignee: Johnson Controls Technology CompanyInventors: John T. Knight, William L. Kopko, Stephen B. Pickle, Jose Ruel Yalung de la Cruz, Tony Clive Coleman, Mahesh Valiya-Naduvath
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Patent number: 8429930Abstract: An oil separator for use in separating oil from refrigerant gas in a chiller system is provided. Its operation is based on centrifugal separation principles and does not require the use any type of filter or media pack to remove oil from refrigerant gas. The oil separator includes a non-circular (e.g., elliptical) refrigerant outlet pipe that transitions the linear flow from the inlet connection to a swirling (e.g., circular) flow within the cylindrical housing. The non-circular shape of the entrance to the refrigerant outlet pipe provides for more turbulent gas flow and a greater extraction of oil as well as minimization of pressure losses.Type: GrantFiled: July 11, 2008Date of Patent: April 30, 2013Assignee: Johnson Controls Technology CompanyInventors: Mahesh Valiya Naduvath, Jun Wang, Satheesh Kulankara
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Patent number: 8413461Abstract: Air cooled chillers having a condenser section (300) sized to match chiller capacity and auxiliary cooling requirements satisfied by use of an independent cooling coil (314) dedicated to providing auxiliary cooling. The independent cooling coil (314) is located within the current condenser (300), but utilizes available space within the existing condenser, as well as a small portion of the airflow driven by the existing condenser fan (320). Thus, the auxiliary cooling capacity is provided with a single dedicated coil design, but which otherwise uses existing equipment and space.Type: GrantFiled: July 17, 2008Date of Patent: April 9, 2013Assignee: Johnson Controls Technology CompanyInventors: Mustafa Kemal Yanik, Mahesh Valiya Naduvath
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Patent number: 8281615Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include manifold configurations designed to promote mixing of vapor phase and liquid phase refrigerant. The manifolds contain flow mixers such as a helical tape, sectioned volumes, and partitions containing apertures. The flow mixers direct the flow of refrigerant within the manifold to promote a more homogenous distribution of fluid within the multichannel tubes.Type: GrantFiled: January 28, 2011Date of Patent: October 9, 2012Assignee: Johnson Controls Technology CompanyInventors: Jeffrey Lee Tucker, Mahesh Valiya-Naduvath, John T. Knight, Judd M. Vance
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Publication number: 20110192582Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and multi-slab heat exchangers are provided that include fluid connections for transmitting fluid between groups of tubes. The fluid connections may include generally tubular members fluidly connected to manifold sections. The fluid connections also may include partitioned manifolds containing tubes of different heights. Multichannel tubes are also provided that include a bent section configured to locate a flow path near a leading edge of a tube within one section and near a trailing edge of the tube within another section.Type: ApplicationFiled: April 18, 2011Publication date: August 11, 2011Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: John T. Knight, William L. Kopko, Stephen B. Pickle, Jose Ruel Yalung de la Cruz, Tony Clive Coleman, Mahesh Valiya-Naduvath
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Publication number: 20110132587Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include manifold configurations designed to promote mixing of vapor phase and liquid phase refrigerant. The manifolds contain flow mixers such as a helical tape, sectioned volumes, and partitions containing apertures. The flow mixers direct the flow of refrigerant within the manifold to promote a more homogenous distribution of fluid within the multichannel tubes.Type: ApplicationFiled: January 28, 2011Publication date: June 9, 2011Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Jeffrey Lee Tucker, Mahesh Valiya-Naduvath, John T. Knight, Judd M. Vance
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Patent number: 7942020Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and multi-slab heat exchangers are provided that include fluid connections for transmitting fluid between groups of tubes. The fluid connections may include generally tubular members fluidly connected to manifold sections. The fluid connections also may include partitioned manifolds containing tubes of different heights. Multichannel tubes are also provided that include a bent section configured to locate a flow path near a leading edge of a tube within one section and near a trailing edge of the tube within another section.Type: GrantFiled: August 28, 2008Date of Patent: May 17, 2011Assignee: Johnson Controls Technology CompanyInventors: John T. Knight, William L. Kopko, Stephen B. Pickle, Jose Ruel Yalung de la Cruz, Tony Clive Coleman, Mahesh Valiya-Naduvath
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Patent number: 7895860Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include manifold configurations designed to promote mixing of vapor phase and liquid phase refrigerant. The manifolds contain flow mixers such as a helical tape, sectioned volumes, and partitions containing apertures. The flow mixers direct the flow of refrigerant within the manifold to promote a more homogenous distribution of fluid within the multichannel tubes.Type: GrantFiled: February 29, 2008Date of Patent: March 1, 2011Assignee: Johnson Controls Technology CompanyInventors: Jeffrey Lee Tucker, Mahesh Valiya-Naduvath, John T. Knight, Judd M. Vance
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Publication number: 20110011105Abstract: An oil separator for use in separating oil from refrigerant gas in a chiller system is provided. Its operation is based on centrifugal separation principles and does not require the use any type of filter or media pack to remove oil from refrigerant gas. The oil separator includes a non-circular (e.g., elliptical) refrigerant outlet pipe that transitions the linear flow from the inlet connection to a swirling (e.g., circular) flow within the cylindrical housing. The non-circular shape of the entrance to the refrigerant outlet pipe provides for more turbulent gas flow and a greater extraction of oil as well as minimization of pressure losses.Type: ApplicationFiled: July 11, 2008Publication date: January 20, 2011Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Mahesh Valiya Naduvath, Jun Wang, Satheesh Kulankara
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Patent number: 7832231Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include tube and manifold configurations designed to promote separation of vapor phase and liquid phase fluid. The manifolds contain multichannel tubes of various end geometries designed to dispose flow channels at different heights within the manifold. Individual tubes also may be disposed at different heights within the manifold. The various flow channel and tube heights permit direction of vapor phase and liquid phase refrigerant to certain flow channels.Type: GrantFiled: February 29, 2008Date of Patent: November 16, 2010Assignee: Johnson Controls Technology CompanyInventors: John T. Knight, Jeffrey Lee Tucker, Mahesh Valiya-Naduvath
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Patent number: 7802439Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems, heat exchangers, and multichannel tubes are provided which include internal configurations designed to promote mixing. The multichannel tubes include interior walls which form flow channels. The interior walls are interrupted at locations along the multichannel tube in order to provide open spaces between the flow channels where mixing may occur. The mixing that occurs promotes a more homogenous distribution of refrigerant within the multichannel tubes.Type: GrantFiled: February 29, 2008Date of Patent: September 28, 2010Assignee: Johnson Controls Technology CompanyInventors: Mahesh Valiya-Naduvath, Jeffrey Lee Tucker, John T. Knight
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Publication number: 20100199714Abstract: Air cooled chillers having a condenser section (300) sized to match chiller capacity and auxiliary cooling requirements satisfied by use of an independent cooling coil (314) dedicated to providing auxiliary cooling. The independent cooling coil (314) is located within the current condenser (300), but utilizes available space within the existing condenser, as well as a small portion of the airflow driven by the existing condenser fan (320). Thus, the auxiliary cooling capacity is provided with a single dedicated coil design, but which otherwise uses existing equipment and space.Type: ApplicationFiled: July 17, 2008Publication date: August 12, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Mustafa Kemal Yanik, Mahesh Valiya Naduvath
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Patent number: 7757753Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include dissimilar internal configurations. The heat exchangers include multiple sets of multichannel tubes in fluid communication with each other. One set of multichannel tubes contains flow channels of one shape and size while the another set of multichannel tubes contains flow channels of a different shape and/or size. The dissimilar flow channels within the multichannel tube sets allow each set of tubes to be configured to the properties of the refrigerant flowing within the tubes.Type: GrantFiled: February 29, 2008Date of Patent: July 20, 2010Assignee: Johnson Controls Technology CompanyInventors: Mustafa K. Yanik, Jeffrey Lee Tucker, Mahesh Valiya-Naduvath, Dan R. Burdette, Charles B. Obosu, Jeffrey N. Nichols, William L. Kopko, Jose Ruel Yalung de la Cruz, Kevin E. Keller
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Patent number: 7707850Abstract: A liquid refrigerant drainage mechanism is described for use in a flooded evaporator to mitigate liquid carryover. The drainage mechanism can trap liquid refrigerant droplets, create a liquid column to overcome a pressure difference across the mechanism and drain liquid back to the pool in the evaporator. The drainage mechanism is disposed in a suction baffle, and has a mesh pad and a tapered pipe secured to the bottom of the baffle. The pipe has a drainage aperture at one end to allow the accumulated liquid refrigerant to return to the refrigerant pool below. The mesh pad helps to separate liquid droplets that coalesce and fall into the tapered pipe. By using this liquid drainage mechanism in conjunction with a suction baffle, liquid carryover can be reduced and chiller performance improved.Type: GrantFiled: June 7, 2007Date of Patent: May 4, 2010Assignee: Johnson Controls Technology CompanyInventors: Jun Wang, Mahesh Valiya Naduvath, John F. Judge
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Patent number: 7587911Abstract: An evaporator including a shell having a first end and a second end. A plurality of tubes are disposed within the shell to circulate refrigerant through the shell. A plurality of shell inlets are in fluid communication with the shell to deliver a fluid to exchange heat in the plurality of tubes, preferably through a baffle arrangement. At least one of the shell inlets may be arranged to deliver fluid to the shell adjacent to the first end. In addition, at least one of the other shell inlets may be arranged to deliver fluid adjacent to the second end. A shell outlet is in fluid communication with the shell to discharge fluid from the shell. The shell outlet is arranged to receive the combined liquid delivered to the shell by the plurality of shell inlets.Type: GrantFiled: January 23, 2008Date of Patent: September 15, 2009Assignee: York International CorporationInventors: Mustafa Kemal Yanik, Satheesh Kulankara, Mahesh Valiya Naduvath, John Raymond Mathias
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Publication number: 20090025914Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and multi-slab heat exchangers are provided that include fluid connections for transmitting fluid between groups of tubes. The fluid connections may include generally tubular members fluidly connected to manifold sections. The fluid connections also may include partitioned manifolds containing tubes of different heights. Multichannel tubes are also provided that include a bent section configured to locate a flow path near a leading edge of a tube within one section and near a trailing edge of the tube within another section.Type: ApplicationFiled: August 28, 2008Publication date: January 29, 2009Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: John T. Knight, William L. Kopko, Stephen B. Pickle, Jose Ruel de la Cruz, Tony Clive Coleman, Mahesh Valiya-Naduvath
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Publication number: 20080302130Abstract: A liquid refrigerant drainage mechanism is described for use in a flooded evaporator to mitigate liquid carryover. The drainage mechanism can trap liquid refrigerant droplets, create a liquid column to overcome a pressure difference across the mechanism and drain liquid back to the pool in the evaporator. The drainage mechanism is disposed in a suction baffle, and has a mesh pad and a tapered pipe secured to the bottom of the baffle. The pipe has a drainage aperture at one end to allow the accumulated liquid refrigerant to return to the refrigerant pool below. The mesh pad helps to separate liquid droplets that coalesce and fall into the tapered pipe. By using this liquid drainage mechanism in conjunction with a suction baffle, liquid carryover can be reduced and chiller performance improved.Type: ApplicationFiled: June 7, 2007Publication date: December 11, 2008Applicant: Johnson Controls Technology Co.Inventors: Jun Wang, Mahesh Valiya Naduvath, John F. Judge
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Publication number: 20080148746Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which contain integrated auxiliary cooling loops. The heat exchangers include multiple sets of multichannel tubes located on independent closed refrigeration loops. One closed loop functions as the main refrigeration loop of the system while another closed loop provides auxiliary cooling to system components. The closed loops are contained within the same heat exchanger, thus, allowing the auxiliary cooling loop to be integrated into an existing system.Type: ApplicationFiled: February 29, 2008Publication date: June 26, 2008Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Mustafa K. Yanik, Mahesh Valiya-Naduvath