Patents by Inventor Jongcheol HWANG

Jongcheol HWANG 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).

  • CHILLER SYSTEM AND METHOD FOR OPERATING CHILLER SYSTEM
    Publication number: 20220120486
    Abstract: A chiller system may include a compressor configured to compress a refrigerant by rotation; a condenser configured to condense the refrigerant compressed by the compressor; an expander configured to expand the condensed refrigerant; an evaporator configured to evaporate the expanded refrigerant; a sensor unit including a plurality of temperature sensors, a speed sensor that senses a rotational speed of the compressor, and a current sensor that senses a current of the compressor; and a controller configured to determine whether to enter into a surge detection logic based on a volatility of data sensed by the sensor unit, and configured to perform surge detection.
    Type: Application
    Filed: October 14, 2021
    Publication date: April 21, 2022
    Inventors: Sanghyun KIM, Youngjin KIM, Jongcheol HWANG, Kwangsuk KO