Patents by Inventor Zan Liu
Zan Liu 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: 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: 20190195524Abstract: A thermal management system includes a heat rejection device configured to fluidly couple to a refrigeration system, a fan configured to provide an entering airflow across the heat rejection device to cool a flow of water within the heat rejection device, and a controller configured to control a speed of the fan based on at least two of (i) a relative humidity of the entering airflow, (ii) a percentage of capacity one or more components of the refrigeration system are operating at, (iii) a ratio of water to energy costs, and (iv) a ratio of a design power of a compressor of the refrigeration system to a design power of the fan to minimize a total utility operation cost of the thermal management system including (i) energy costs to operate the fan and the refrigeration system and (ii) water costs of the flow of water.Type: ApplicationFiled: August 29, 2017Publication date: June 27, 2019Applicant: Johnson Controls Technology CompanyInventors: Thomas P. Carter, Zan Liu
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Publication number: 20190173739Abstract: Embodiments of the present disclosure relate to a method, a device and a computer program product for managing a distributed system. The method comprises sending heartbeat messages from a master node to a plurality of slave nodes, the master node and the plurality of slave nodes being included in a plurality of nodes in the distributed system, and the plurality of nodes being divided into one or more partitions. The method further comprises, in response to receiving a response to the heartbeat messages from a portion of slave nodes in the plurality of slave nodes, determining respective states of the one or more partitions. In addition, the method further comprises a state of a first slave node in the plurality of slave nodes at least based on the respective states of the one or more partitions, the master node failing to receive a response to the heartbeat messages from the first slave node.Type: ApplicationFiled: October 29, 2018Publication date: June 6, 2019Inventors: Wei Cui, Junping Zhao, Huan Chen, Brown Zan Liu
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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: 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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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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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: 20160363376Abstract: 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: ApplicationFiled: June 12, 2015Publication date: December 15, 2016Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston P. Blay, Philip S. Hollander
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Publication number: 20160138869Abstract: 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: ApplicationFiled: January 25, 2016Publication date: May 19, 2016Inventors: 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: 9279619Abstract: 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 a top and a bottom indirect evaporative heat exchange section including a series of serpentine tubes A secondary system to distribute evaporative liquid below the first indirect heat exchange section and a direct heat exchange section may be provided between the two indirect heat exchangers.Type: GrantFiled: March 15, 2013Date of Patent: March 8, 2016Assignee: Baltimore Aircoil Company Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Patent number: 9255739Abstract: 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 secondary spray system or a direct heat exchange section may be provided in the vertical spacing between run section formed by the increased height return bends.Type: GrantFiled: March 15, 2013Date of Patent: February 9, 2016Assignee: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Patent number: 9144770Abstract: Sorbent for reversible warm CO2 capture. The sorbent includes activated carbon impregnated with magnesium oxide, wherein the magnesium oxide constitutes at least 5% by weight of the sorbent.Type: GrantFiled: September 19, 2014Date of Patent: September 29, 2015Assignee: Massachusetts Institute of TechnologyInventors: Zan Liu, William H. Green
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Patent number: 9057563Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section and a direct evaporative heat exchange section. The indirect evaporative heat exchange section is usually located above the direct evaporative heat exchange section, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid that exits the indirect evaporative heat exchange section then passes downwardly across and through the direct 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. The indirect heat exchange section is comprised of a plate type heat exchanger.Type: GrantFiled: December 17, 2012Date of Patent: June 16, 2015Assignee: Baltimore Aircoil Company, Inc.Inventors: Thomas Carter, Zan Liu, David Andrew Aaron, Philip Hollander
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Patent number: 9057564Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section and a direct evaporative heat exchange section. The indirect evaporative heat exchange section is usually located above the direct evaporative heat exchange section, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid that exits the indirect evaporative heat exchange section then passes downwardly across and through the direct 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. The indirect heat exchange section is comprised of a plate type heat exchanger. An improved heat exchange apparatus is provided with indirect evaporative heat exchange section consisting of a plate type heat exchanger which provides more surface area per volume compared to other designs.Type: GrantFiled: December 17, 2012Date of Patent: June 16, 2015Assignee: Baltimore Aircoil Company, Inc.Inventors: Thomas Carter, Zan Liu, David Andrew Aaron, Philip Hollander
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Publication number: 20150110696Abstract: Sorbent for reversible warm CO2 capture. The sorbent includes activated carbon impregnated with magnesium oxide, wherein the magnesium oxide constitutes at least 5% by weight of the sorbent.Type: ApplicationFiled: September 19, 2014Publication date: April 23, 2015Inventors: Zan Liu, William H. Green
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Patent number: 9004463Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section and a direct evaporative heat exchange section. The indirect evaporative heat exchange section is usually located above the direct evaporative heat exchange section, and an evaporative liquid is passed downwardly onto the indirect heat exchange section. The evaporative liquid that exits the direct evaporative heat exchange section then passes downwardly across and through the indirect heat exchange section. The evaporative liquid is collected in a sump and then pumped upwardly to be distributed again across the direct heat exchange section. The indirect heat exchange section is comprised of a plate type heat exchanger.Type: GrantFiled: December 17, 2012Date of Patent: April 14, 2015Assignee: Baltimore Aircoil Company, Inc.Inventors: Thomas Carter, Zan Liu, David Andrew Aaron, Philip Hollander
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Publication number: 20140264973Abstract: 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 A secondary spray distribution may also be provided in the increased vertical spacing between tube runs.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman
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Publication number: 20140264974Abstract: 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 run sections 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: March 15, 2013Publication date: September 18, 2014Applicant: Baltimore Aircoil Company, Inc.Inventors: David Andrew Aaron, Zan Liu, Branislav Korenic, John Edward Rule, Preston Blay, Philip S. Hollander, Glenn David Comisac, Gregory Michael Lowman