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).

  • Publication number: 20190346221
    Abstract: 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: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventors: Yoon Shin, David Andrew Aaron
  • Patent number: 10443942
    Abstract: 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: Grant
    Filed: June 23, 2017
    Date of Patent: October 15, 2019
    Assignee: 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
  • Publication number: 20190145721
    Abstract: 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: Application
    Filed: November 15, 2017
    Publication date: May 16, 2019
    Inventors: Preston Blay, Ravindra Singh, Frank T. Morrison, Andrew Beaver, David Andrew Aaron
  • Patent number: 10288351
    Abstract: 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: Grant
    Filed: January 25, 2016
    Date of Patent: May 14, 2019
    Assignee: 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
  • Patent number: 10132577
    Abstract: 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: Grant
    Filed: January 20, 2014
    Date of Patent: November 20, 2018
    Assignee: BALTIMORE AIRCOIL COMPANY, INC.
    Inventors: Greg Martell, Adam Sheer, Philip Hollander, Preston Blay, David Andrew Aaron
  • Publication number: 20180283792
    Abstract: 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: Application
    Filed: March 30, 2017
    Publication date: October 4, 2018
    Inventors: Yoon K. Shin, David Andrew Aaron
  • Patent number: 10054359
    Abstract: 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: Grant
    Filed: October 18, 2016
    Date of Patent: August 21, 2018
    Assignee: BALTIMORE AIRCOIL COMPANY, INC.
    Inventors: Yoon Shin, Kevin Egolf, David Andrew Aaron
  • Publication number: 20180224174
    Abstract: 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: Application
    Filed: February 5, 2018
    Publication date: August 9, 2018
    Inventors: Philip Hollander, Gregory Martell, Wim Uytterhoeven, Thomas Van Dijck, David Andrew Aaron
  • Publication number: 20180172367
    Abstract: 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: Application
    Filed: December 11, 2017
    Publication date: June 21, 2018
    Inventors: Yoon K. Shin, Gregory Adam Russell, Ryan J. Most, Ravindra Singh, David Andrew Aaron, Frank T. Morrison
  • Patent number: 9995533
    Abstract: 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: Grant
    Filed: December 3, 2015
    Date of Patent: June 12, 2018
    Assignee: 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
  • Publication number: 20180106528
    Abstract: 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: Application
    Filed: October 18, 2016
    Publication date: April 19, 2018
    Inventors: Yoon Shin, Kevin Egolf, David Andrew Aaron
  • Publication number: 20180100700
    Abstract: 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: Application
    Filed: October 12, 2016
    Publication date: April 12, 2018
    Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
  • Publication number: 20180100703
    Abstract: 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: Application
    Filed: October 12, 2016
    Publication date: April 12, 2018
    Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
  • Publication number: 20180100701
    Abstract: 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: Application
    Filed: October 12, 2016
    Publication date: April 12, 2018
    Inventors: ANDREW BEAVER, DAVID ANDREW AARON, YOHANN LILIAN ROUSSELET
  • Patent number: 9803929
    Abstract: 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: Grant
    Filed: December 3, 2013
    Date of Patent: October 31, 2017
    Assignee: Baltimore Aircoil Company, Inc.
    Inventors: David Andrew Aaron, Zan Liu, Philip Hollander
  • Publication number: 20170284742
    Abstract: 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: Application
    Filed: June 23, 2017
    Publication date: October 5, 2017
    Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
  • Publication number: 20170160015
    Abstract: 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: Application
    Filed: December 3, 2015
    Publication date: June 8, 2017
    Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
  • Publication number: 20170115077
    Abstract: 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: Application
    Filed: October 22, 2015
    Publication date: April 27, 2017
    Inventors: Yoon Shin, Andrew Sickler, Kevin Deliman, Trevor Fontes, David Andrew Aaron
  • Patent number: 9587885
    Abstract: 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: Grant
    Filed: June 12, 2015
    Date of Patent: March 7, 2017
    Assignee: Baltimore Aircoil Company, Inc.
    Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander
  • Publication number: 20160363388
    Abstract: 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: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Inventors: Kevin Egolf, David Andrew Aaron