Patents by Inventor Ronnie R. Moffitt
Ronnie R. Moffitt 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: 20240110720Abstract: A method is provided for the controlled routing of hydronic flow within a climate control system. The method includes determining a condition type request for a plurality of area zones corresponding to a particular thermal zone. The method further includes determining a supply temperature type associated with at least a supply line of a primary supply loop and a supply line of a secondary supply loop. The supply temperature type is indicative of a thermal transport fluid temperature within the respective supply line. The method further includes providing an actuation signal set to a valve assembly. The actuation signal set is configured to describe a position for each value of the valve assembly and the position for each valve is based on the conditioning type request and the determined supply temperature types.Type: ApplicationFiled: September 30, 2022Publication date: April 4, 2024Inventors: Ronnie R. Moffitt, Brian J. Fiegen, Lee R. Cline
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Publication number: 20230366568Abstract: A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has an majority absorption-desorption operating band of 25% relative humidity or less.Type: ApplicationFiled: February 27, 2023Publication date: November 16, 2023Inventors: Yogesh Pandit, Ronnie R. Moffitt, Zubin Varghese, Jeyaprakash Gurusamy
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Publication number: 20230349566Abstract: The AHU includes an air dehumidifying (AD) flow path, an air regeneration (AR) flow path, a first desiccant wheel and a second desiccant wheel each in the AD flow path and the AR flow path, a first cooler heat exchanger in the AD flow path, a second cooler in the AD flow path, and a heater disposed in the AR flow path. An HVACR system includes the AHU and a chiller configured to supply chiller liquid to the first cooler heat exchanger and the second cooler heat exchanger in the AHU. A method of conditioning air in an HVACR system includes directing air through the air dehumidifying (AD) flow path and directing air through an air regeneration (AR) flow path to regenerate the desiccant in a first desiccant wheel and the desiccant in a second desiccant wheel.Type: ApplicationFiled: April 27, 2023Publication date: November 2, 2023Inventors: Ronnie R. Moffitt, Patrick Birbarah, Kenneth J. Schultz, Chen Wei
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Patent number: 11662108Abstract: Systems, apparatus and methods for operating an environmental control system that delivers dehumidified outdoor air into a conditioned space through an air valve. The method includes establishing CO2 setpoints corresponding to a ventilation outdoor air flow rate and a dehumidification outdoor air flow rate, determining a humidity metric of the conditioned space, and delivering outside air to the conditioned space at the ventilation outdoor air flow rate or dehumidification outdoor air flow rate based upon the humidity metric. The outside air may be tempered with return air from the conditioned space. The dehumidification CO2 set point is determined by predicting the dehumidification CO2 set point based on the airflow quantity per occupant and the relationship of the occupant predicted water vapor emission rate and CO2 emission rate.Type: GrantFiled: December 28, 2021Date of Patent: May 30, 2023Assignee: Trane International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 11592195Abstract: A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has an majority absorption-desorption operating band of 25% relative humidity or less.Type: GrantFiled: February 12, 2021Date of Patent: February 28, 2023Assignee: TRANE INTERNATIONAL INC.Inventors: Yogesh Pandit, Ronnie R. Moffitt, Zubin Varghese, Jeyaprakash Gurusamy
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Publication number: 20220260262Abstract: A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has an majority absorption-desorption operating band of 25% relative humidity or less.Type: ApplicationFiled: February 12, 2021Publication date: August 18, 2022Inventors: Yogesh Pandit, Ronnie R. Moffitt, Zubin Varghese, Jeyaprakash Gurusamy
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Publication number: 20220178565Abstract: Systems, apparatus and methods for operating an environmental control system that delivers dehumidified outdoor air into a conditioned space through an air valve. The method includes establishing CO2 setpoints corresponding to a ventilation outdoor air flow rate and a dehumidification outdoor air flow rate, determining a humidity metric of the conditioned space, and delivering outside air to the conditioned space at the ventilation outdoor air flow rate or dehumidification outdoor air flow rate based upon the humidity metric. The outside air may be tempered with return air from the conditioned space. The dehumidification CO2 set point is determined by predicting the dehumidification CO2 set point based on the airflow quantity per occupant and the relationship of the occupant predicted water vapor emission rate and CO2 emission rate.Type: ApplicationFiled: December 28, 2021Publication date: June 9, 2022Inventor: Ronnie R. Moffitt
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Patent number: 11243003Abstract: Systems, apparatus and methods for operating an environmental control system that delivers dehumidified outdoor air into a conditioned space through an air valve. The method includes establishing CO2 setpoints corresponding to a ventilation outdoor air flow rate and a dehumidification outdoor air flow rate, determining a humidity metric of the conditioned space, and delivering outside air to the conditioned space at the ventilation outdoor air flow rate or dehumidification outdoor air flow rate based upon the humidity metric. The outside air may be tempered with return air from the conditioned space. The dehumidification CO2 set point is determined by predicting the dehumidification CO2 set point based on the airflow quantity per occupant and the relationship of the occupant predicted water vapor emission rate and CO2 emission rate.Type: GrantFiled: August 13, 2019Date of Patent: February 8, 2022Assignee: Trane International Inc.Inventor: Ronnie R. Moffitt
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Publication number: 20210048208Abstract: Systems, apparatus and methods for operating an environmental control system that delivers dehumidified outdoor air into a conditioned space through an air valve. The method includes establishing CO2 setpoints corresponding to a ventilation outdoor air flow rate and a dehumidification outdoor air flow rate, determining a humidity metric of the conditioned space, and delivering outside air to the conditioned space at the ventilation outdoor air flow rate or dehumidification outdoor air flow rate based upon the humidity metric. The outside air may be tempered with return air from the conditioned space. The dehumidification CO2 set point is determined by predicting the dehumidification CO2 set point based on the airflow quantity per occupant and the relationship of the occupant predicted water vapor emission rate and CO2 emission rate.Type: ApplicationFiled: August 13, 2019Publication date: February 18, 2021Applicant: Trane International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 10876756Abstract: A method of controlling a discharge air reset in an heating, ventilation, air conditioning, and refrigeration (HVACR system includes determining, by a controller, a space temperature in a conditioned space, a setpoint temperature of the conditioned space, and an operating mode of a variable-air-volume (VAV) box for the conditioned space. The controller determines whether the operating mode of the VAV box matches an operating mode of an HVACR unit. A deviation from the setpoint temperature of the conditioned space for the VAV box for the conditioned is calculated in response to determining the VAV box is in a same mode as the HVACR unit. A statistical deviation from the setpoint temperature of the conditioned space is calculated. A discharge air setpoint temperature is determined based on the statistical deviation from the setpoint temperature of the conditioned space. The controller sets the discharge air setpoint temperature of the HVACR unit using the determined discharge air setpoint temperature.Type: GrantFiled: January 11, 2019Date of Patent: December 29, 2020Assignee: TRANE INTERNATIONAL INC.Inventors: Aaron E. Opatz, Ronnie R. Moffitt, John Arthur Murphy, James Kenneth McKeever, Eugene R. Shedivy
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Patent number: 10876752Abstract: A method of controlling a discharge air reset in an heating, ventilation, air conditioning, and refrigeration (HVACR system includes determining, by a controller, a space temperature in a conditioned space, a setpoint temperature of the conditioned space, and an operating mode of a variable-air-volume (VAV) box for the conditioned space. The controller determines whether the operating mode of the VAV box matches an operating mode of an HVACR unit. A deviation from the setpoint temperature of the conditioned space for the VAV box for the conditioned is calculated in response to determining the VAV box is in a same mode as the HVACR unit. An average deviation from the setpoint temperature of the conditioned space is calculated. A discharge air setpoint temperature is determined based on the average deviation from the setpoint temperature of the conditioned space. The controller sets the discharge air setpoint temperature of the HVACR unit using the determined discharge air setpoint temperature.Type: GrantFiled: December 27, 2018Date of Patent: December 29, 2020Assignee: TRANE INTERNATIONAL INC.Inventors: Aaron E. Opatz, John Arthur Murphy, Ronnie R. Moffitt, James Kenneth McKeever
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Publication number: 20200208856Abstract: A method of controlling a discharge air reset in an heating, ventilation, air conditioning, and refrigeration (HVACR system includes determining, by a controller, a space temperature in a conditioned space, a setpoint temperature of the conditioned space, and an operating mode of a variable-air-volume (VAV) box for the conditioned space. The controller determines whether the operating mode of the VAV box matches an operating mode of an HVACR unit. A deviation from the setpoint temperature of the conditioned space for the VAV box for the conditioned is calculated in response to determining the VAV box is in a same mode as the HVACR unit. An average deviation from the setpoint temperature of the conditioned space is calculated. A discharge air setpoint temperature is determined based on the average deviation from the setpoint temperature of the conditioned space. The controller sets the discharge air setpoint temperature of the HVACR unit using the determined discharge air setpoint temperature.Type: ApplicationFiled: December 27, 2018Publication date: July 2, 2020Inventors: Aaron E. Opatz, John Arthur Murphy, Ronnie R. Moffitt, James Kenneth McKeever
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Publication number: 20200208865Abstract: A method of controlling a discharge air reset in an heating, ventilation, air conditioning, and refrigeration (HVACR system includes determining, by a controller, a space temperature in a conditioned space, a setpoint temperature of the conditioned space, and an operating mode of a variable-air-volume (VAV) box for the conditioned space. The controller determines whether the operating mode of the VAV box matches an operating mode of an HVACR unit. A deviation from the setpoint temperature of the conditioned space for the VAV box for the conditioned is calculated in response to determining the VAV box is in a same mode as the HVACR unit. A statistical deviation from the setpoint temperature of the conditioned space is calculated. A discharge air setpoint temperature is determined based on the statistical deviation from the setpoint temperature of the conditioned space. The controller sets the discharge air setpoint temperature of the HVACR unit using the determined discharge air setpoint temperature.Type: ApplicationFiled: January 11, 2019Publication date: July 2, 2020Inventors: Aaron E. Opatz, Ronnie R. Moffitt, John Arthur Murphy, James Kenneth McKeever, Eugene R. Shedivy
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Patent number: 7685834Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: GrantFiled: December 21, 2006Date of Patent: March 30, 2010Assignee: Trane International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 7389646Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: GrantFiled: December 18, 2006Date of Patent: June 24, 2008Assignee: Trane International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 7340906Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: GrantFiled: December 26, 2006Date of Patent: March 11, 2008Assignee: American Standard International Inc.Inventor: Ronnie R. Moffitt
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Publication number: 20070163279Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: ApplicationFiled: December 21, 2006Publication date: July 19, 2007Inventor: Ronnie R. Moffitt
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Patent number: 7178355Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: GrantFiled: January 17, 2006Date of Patent: February 20, 2007Assignee: American Standard International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 7150314Abstract: A heat recovery arrangement. The arrangement has a housing including a bathroom exhaust inlet, an exhaust outlet, a bathroom exhaust airflow path through the housing from the bathroom exhaust inlet to the exhaust outlet, a return air inlet, and a return air path through the housing from the return air inlet to the exhaust outlet. The housing also has an outside air inlet, a supply air outlet, an outside air path through the housing from the outside air inlet to the supply air outlet; and a heat recovery device extracting heat from the exhaust airflow path and the return airflow path and transferring heat to the outside airflow path.Type: GrantFiled: September 17, 2001Date of Patent: December 19, 2006Assignee: American Standard International Inc.Inventor: Ronnie R. Moffitt
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Patent number: 7017356Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.Type: GrantFiled: August 5, 2005Date of Patent: March 28, 2006Assignee: American Standard International Inc.Inventor: Ronnie R. Moffitt