Patents by Inventor DAVID ANDREW AARON
DAVID ANDREW AARON 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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Publication number: 20190346221Abstract: A cooling tower is provided having a heat exchange section. A water collection basin located above the heat exchange section. The water collection basin has a plurality of openings that allow water to be distributed downwardly onto the heat exchange section. The water collection basin openings each have a diameter of from 0.2 inch to 0.6 inch.Type: ApplicationFiled: July 24, 2019Publication date: November 14, 2019Inventors: Yoon Shin, David Andrew Aaron
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Patent number: 10443942Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. The indirect evaporative heat exchange section includes a series of serpentine tubes, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section including a series of serpentine tubes with run sections and return bend sections of both normal and increased height. A direct heat exchange section may be provided in the vertical spacing between run sections formed by the increased height return bends.Type: GrantFiled: June 23, 2017Date of Patent: October 15, 2019Assignee: BALTIMORE AIRCOIL COMPANY, INC.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Publication number: 20190145721Abstract: An indirect heat exchanger has two airflow paths and an airflow generator to draw air through the airflow paths. A fluid conduit passes through the heat exchanger such that a cooling region is positioned within each of the flow paths. A dispenser is positioned to dispense evaporative liquid on one of the cooling regions. The dispenser operates in a wet mode and a dry mode. A controller regulates airflow through the first flow path and the second flow path, and also controls the operation of the dispenser. In this way, the controller may operate the airflow paths independently such that the airflow through a flow path operating in the dry mode is greater than that of the flow path operating in the wet mode.Type: ApplicationFiled: November 15, 2017Publication date: May 16, 2019Inventors: Preston Blay, Ravindra Singh, Frank T. Morrison, Andrew Beaver, David Andrew Aaron
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Patent number: 10288351Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. An evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with two indirect evaporative heat exchange sections separated by a vertical distance. A direct evaporative heat exchange section may be provided in the vertical spacing between the two indirect evaporative heat exchange sections.Type: GrantFiled: January 25, 2016Date of Patent: May 14, 2019Assignee: BALTIMORE AIRCOIL COMPANY, INC.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Patent number: 10132577Abstract: An adiabatic condenser or fluid cooler is provided. A condensing or fluid cooling coil is provided. An adiabatic pad is provided wherein water can be used to cool the ambient air before entering or impacting the condensing or fluid cooling coil. Controls are provided that can adjust or eliminate the amount of water flowing over the adiabatic pad. The adiabatic pad may also be physically moved to allow ambient air to directly impact the condensing or fluid cooling coil.Type: GrantFiled: January 20, 2014Date of Patent: November 20, 2018Assignee: BALTIMORE AIRCOIL COMPANY, INC.Inventors: Greg Martell, Adam Sheer, Philip Hollander, Preston Blay, David Andrew Aaron
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Publication number: 20180283792Abstract: An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section enclosed in a housing and a direct evaporative heat exchange section both of which are located within the same apparatus. An internal fluid stream is passed through the internal passageways of the indirect heat exchange section. An evaporative liquid is passed across the outside of the external passageways of the indirect heat exchange section to exchange heat indirectly with the internal fluid stream. The evaporative liquid that exits the indirect evaporative heat exchange section housing then passes onto and through the direct heat exchange section. The evaporative liquid exiting the direct heat exchange section is collected in a sump and then pumped upwardly to be distributed again through the indirect heat exchange section housing. The indirect heat exchange section may be comprised of a plate type heat exchanger or a circuit tube type heat exchanger located within a housing.Type: ApplicationFiled: March 30, 2017Publication date: October 4, 2018Inventors: Yoon K. Shin, David Andrew Aaron
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Patent number: 10054359Abstract: A motor mount and fan sheave assembly is provided comprising two main structural supports, with a motor mount attached to the two main structural supports such that the motor mount can slide along the two main structural supports. A motor is affixed to the motor mount, and a fan sheave affixed to the two main structural supports. A motor sheave extends from the motor, and a belt spans between the motor sheave and the fan sheave. A threaded rod passes through a receiving opening in the motor mount, such that wherein upon movement of the adjusting rod, the motor mount slides along the two main structural supports.Type: GrantFiled: October 18, 2016Date of Patent: August 21, 2018Assignee: BALTIMORE AIRCOIL COMPANY, INC.Inventors: Yoon Shin, Kevin Egolf, David Andrew Aaron
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Publication number: 20180224174Abstract: A water recirculation system operates in a primary mode for evaporatively cooling air. When the water recirculation mode malfunctions, the controller switches a secondary once-through mode. The system includes a sump for collecting water run-off from the evaporative pads, and a pump in fluid communication with the sump. The pump transfers moisture from the sump to the distribution arrangement located at the top of the evaporative pads during the recirculation mode. An automatically operated make-up water valve delivers water to a distribution arrangement on the evaporative pads. A moisture distribution arrangement distributes moisture to the evaporative pads and an automatically operated sump drain valve retains water in the sump when closed and freely drains water from the sump when open. A water level control communicates the sump water level to a control system. A monitoring mechanism detects whether the water-recirculation system has malfunctioned or is operating correctly.Type: ApplicationFiled: February 5, 2018Publication date: August 9, 2018Inventors: Philip Hollander, Gregory Martell, Wim Uytterhoeven, Thomas Van Dijck, David Andrew Aaron
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Publication number: 20180172367Abstract: A cooling tower is provided having a heat exchange section, and a fan for moving air through the heat exchange section. A water distribution assembly provides water onto and through the heat exchange section. An air inlet section is provided through which air is drawn into the cooling tower and the heat exchange section. The air inlet section has outside edges and corners. A wall assembly is provided in the air inlet section, with the wall assembly extending from the corners of the air inlet section inwardly. The water passing through the heat exchange section enters the air inlet section, and exits to a sump beneath the air inlet section. The air inlet section is comprised of a structure having outside edges and corners, and the wall assembly is comprised of a plurality of wall panel sections. Each wall panel section has an outer edge at a corner of the air inlet section, and each wall panel section extends inwardly from the corner of the air inlet section.Type: ApplicationFiled: December 11, 2017Publication date: June 21, 2018Inventors: Yoon K. Shin, Gregory Adam Russell, Ryan J. Most, Ravindra Singh, David Andrew Aaron, Frank T. Morrison
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Patent number: 9995533Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. The indirect evaporative heat exchange section includes a series of serpentine tubes, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section including a series of serpentine tubes with run sections and return bend sections of both normal and increased height. A direct heat exchange section may be provided in the vertical spacing between run sections formed by the increased height return bends.Type: GrantFiled: December 3, 2015Date of Patent: June 12, 2018Assignee: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Publication number: 20180106528Abstract: A motor mount and fan sheave assembly is provided comprising two main structural supports, with a motor mount attached to the two main structural supports such that the motor mount can slide along the two main structural supports. A motor is affixed to the motor mount, and a fan sheave affixed to the two main structural supports. A motor sheave extends from the motor, and a belt spans between the motor sheave and the fan sheave. A threaded rod passes through a receiving opening in the motor mount, such that wherein upon movement of the adjusting rod, the motor mount slides along the two main structural supports.Type: ApplicationFiled: October 18, 2016Publication date: April 19, 2018Inventors: Yoon Shin, Kevin Egolf, David Andrew Aaron
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Publication number: 20180100703Abstract: An improved indirect heat exchanger is provided which is comprised of a plurality of coil circuits, with each coil circuit comprised of an indirect heat exchange section tube run or plate. Each tube run or plate has at least one change in its geometric shape or may have a progressive change in its geometric shape proceeding from the inlet to the outlet of the circuit. The change in geometric shape along the circuit length allows simultaneously balancing of the external airflow, internal heat transfer coefficients, internal fluid side pressure drop, cross sectional area and heat transfer surface area to optimize heat transfer.Type: ApplicationFiled: October 12, 2016Publication date: April 12, 2018Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
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Publication number: 20180100701Abstract: An improved indirect heat exchanger is provided which is comprised of a plurality of coil circuits, with each coil circuit comprised of an indirect heat exchange section tube run or plate. Each tube run or plate has at least one change in its geometric shape or may have a progressive change in its geometric shape proceeding from the inlet to the outlet of the circuit. The change in geometric shape along the circuit length allows simultaneously balancing of the external airflow, internal heat transfer coefficients, internal fluid side pressure drop, cross sectional area and heat transfer surface area to optimize heat transfer.Type: ApplicationFiled: October 12, 2016Publication date: April 12, 2018Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
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Publication number: 20180100700Abstract: An improved indirect heat exchanger is provided which is comprised of a plurality of coil circuits, with each coil circuit comprised of an indirect heat exchange section tube run or plate. Each tube run or plate has at least one change in its geometric shape or may have a progressive change in its geometric shape proceeding from the inlet to the outlet of the circuit. The change in geometric shape along the circuit length allows simultaneously balancing of the external airflow, internal heat transfer coefficients, internal fluid side pressure drop, cross sectional area and heat transfer surface area to optimize heat transfer.Type: ApplicationFiled: October 12, 2016Publication date: April 12, 2018Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
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Patent number: 9803929Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. An evaporative liquid is downwardly distributed onto the indirect section to indirectly exchange sensible heat with a hot fluid stream flowing within a series of enclosed circuits which comprise the indirect evaporative heat exchange section. An ideal flow rate for such evaporative liquid is between 2.0 and 4.0 gallons per minute per square foot of top surface area of the indirect heat exchange section.Type: GrantFiled: December 3, 2013Date of Patent: October 31, 2017Assignee: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Philip Hollander
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Publication number: 20170284742Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. The indirect evaporative heat exchange section includes a series of serpentine tubes, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section including a series of serpentine tubes with run sections and return bend sections of both normal and increased height. A direct heat exchange section may be provided in the vertical spacing between run sections formed by the increased height return bends.Type: ApplicationFiled: June 23, 2017Publication date: October 5, 2017Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Publication number: 20170160015Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. The indirect evaporative heat exchange section includes a series of serpentine tubes, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section including a series of serpentine tubes with run sections and return bend sections of both normal and increased height. A direct heat exchange section may be provided in the vertical spacing between run sections formed by the increased height return bends.Type: ApplicationFiled: December 3, 2015Publication date: June 8, 2017Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Publication number: 20170115077Abstract: A splash fill arrangement for use in a direct heat exchange section of a cooling tower is provided. Each splash fill arrangement includes support plates and elongated bars extending there between, which arrangement improves the performance of the splash fill arrangement when installed as a direct heat exchange section of a cooling tower. Certain of the elongated bars between the support plates are angled from the horizontal to improve the air flow capabilities and performance of the direct heat exchange section.Type: ApplicationFiled: October 22, 2015Publication date: April 27, 2017Inventors: Yoon Shin, Andrew Sickler, Kevin Deliman, Trevor Fontes, David Andrew Aaron
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Patent number: 9587885Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section. The indirect evaporative heat exchange section is comprised of a series of serpentine tubes, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the indirect heat exchange section. An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section consisting of a series of serpentine tubes comprised of tube runs both of normal and increased height between tube runs. A direct heat exchange section may be provided in the increased vertical spacing between tube runs.Type: GrantFiled: June 12, 2015Date of Patent: March 7, 2017Assignee: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander
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Publication number: 20160363388Abstract: An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section consisting of a series of serpentine tubes which are kept uniformly spaced in the return bend section. Providing uniform return bend spacing on the return bend ends allow for ease of circuit assembly (stacking), ease of coil pull-down, ease of manufacturing, reduction in production cost, produces a higher quality hot dip galvanizing process and is a more robust design that tolerates manufacturing variability issues such as variable tube circuit length and variable return bend angles. Uniform return bend spacing also reduces scaling relative to prior art designs which had wet/dry areas resulting from shadowed tubes which were non-uniformly spaced, provides for better inspection and access to the tubes in the return bend area, maintains uniform air passage around tubes, promotes better tube wetting of the return bend area and ultimately promotes higher quality and higher performing heat exchanger coils.Type: ApplicationFiled: June 12, 2015Publication date: December 15, 2016Inventors: Kevin Egolf, David Andrew Aaron