Patents by Inventor Jiachuan Wang

Jiachuan Wang 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).

  • Patent number: 9250002
    Abstract: A system for controlling an absorption chiller includes feedback control loops determining adjustments to system cooling and heating capacities and a controller for simultaneously adjusting positions of an energy input valve, a hot water valve, and a chilled water valve. The controller adjusts valves based on desired adjustments to system cooling and heating capacities and performance maps characterizing relationships between cooling capacity and heating capacities and valve positions. A method for controlling an absorption chiller includes the step of obtaining a performance map characterizing heat energy input to cooling and heating loops as functions of valve positions. To obtain the map, the hot water valve is held in a substantially constant position while the chilled water valve is modulated. Similarly, the hot water valve is modulated while the chilled water valve is held in a substantially constant position.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: February 2, 2016
    Assignee: CARRIER CORPORATION
    Inventors: Jiachuan Wang, Chaohong Cai, Ahmad M. Mahmoud, Junqiang Fan, Richard L. Martin, John F. Boardman, Timothy C. Wagner
  • Publication number: 20130104574
    Abstract: A hybrid space and water heating heat pump system includes a heat pump including an outdoor assembly and an indoor assembly; a hot water module including a first heat exchanger, a controller, and a water pump connected to a water line, the first heat exchanger being configured for heating water; and a water heater in fluid communication with the hot water module, the water heater configured for receiving heated water from the first heat exchanger; wherein the controller is configured to select between one of conditioning an interior space or heating of the water in the first heat exchanger; and wherein the heat pump is configured for circulating a refrigerant through a first refrigerant circuit in response to the conditioning of the interior space and circulating the refrigerant through a second refrigerant circuit in response to the heating of the water in the first heat exchanger.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Inventors: Daniel J. Dempsey, Derek Leman, Jiachuan Wang, Larry D. Burns, Matt A. Gibson, Matthew Austin, Troy A. Branam
  • Publication number: 20120216552
    Abstract: A system for controlling an absorption chiller includes feedback control loops determining adjustments to system cooling and heating capacities and a controller for simultaneously adjusting positions of an energy input valve, a hot water valve, and a chilled water valve. The controller adjusts valves based on desired adjustments to system cooling and heating capacities and performance maps characterizing relationships between cooling capacity and heating capacities and valve positions. A method for controlling an absorption chiller includes the step of obtaining a performance map characterizing heat energy input to cooling and heating loops as functions of valve positions. To obtain the map, the hot water valve is held in a substantially constant position while the chilled water valve is modulated. Similarly, the hot water valve is modulated while the chilled water valve is held in a substantially constant position.
    Type: Application
    Filed: February 27, 2012
    Publication date: August 30, 2012
    Applicant: CARRIER CORPORATION
    Inventors: Jiachuan Wang, Chaohong Cai, Ahmad M. Mahmoud, Junqiang Fan, Richard L. Martin, John F. Boardman, Timothy C. Wagner