Patents by Inventor George C. Y. Lee

George C. Y. Lee 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).

  • Method and system for preheating combustion air
    Patent number: 4932464
    Abstract: A combustion air heating system includes both an air heater for preheating the combustion air by heat exchange with flue gases and an air preheater for preheating the combustion air prior to entry into the air heater. The air preheater operates by heat exchange between the combustion air discharge from the air heater and a bypass stream of combustion air located upstream of the air preheater. The amount of combustion air flowing through the bypass duct is controlled so that the temperature in the air heater does not fall below the dew point of the acid gases present in the flue gas.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: June 12, 1990
    Assignee: Bechtel Group, Inc.
    Inventors: George C. Y. Lee, Narasimha Kudlu