Patents by Inventor Zhaojian Wang

Zhaojian 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).

  • Method and system of efficiency evaluation of RCAES system
    Patent number: 10837321
    Abstract: An efficiency evaluation method of an RCAES system is disclosed, and the method includes calculating electric energy charged by an electric power system in a compression process, calculating electric energy discharged to the electric power system in an expansion process, and calculating a ratio of the electric energy discharged in the expansion process to that charged in the compression process, and taking the ratio as an efficiency of the whole RCAES system; wherein gas in operation is ideal gas, air mass flow rates in the compression and expansion processes are known and constant in operation, an isothermal model is adopted for the CASV of which the temperature is the same with ambient circumstances, and the temperature and pressure of compressed air after throttling become constant. A corresponding system is also disclosed.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: November 17, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Shengwei Mei, Laijun Chen, Feng Liu, Bin Liu, Cheng Wang, Zhaojian Wang
  • Method and System of Efficiency Evaluation of RCAES System
    Publication number: 20180080346
    Abstract: An efficiency evaluation method of an RCAES system is disclosed, and the method includes calculating electric energy charged by an electric power system in a compression process, calculating electric energy discharged to the electric power system in an expansion process, and calculating a ratio of the electric energy discharged in the expansion process to that charged in the compression process, and taking the ratio as an efficiency of the whole RCAES system; wherein gas in operation is ideal gas, air mass flow rates in the compression and expansion processes are known and constant in operation, an isothermal model is adopted for the CASV of which the temperature is the same with ambient circumstances, and the temperature and pressure of compressed air after throttling become constant. A corresponding system is also disclosed.
    Type: Application
    Filed: June 30, 2014
    Publication date: March 22, 2018
    Inventors: Shengwei Mei, Laijun Chen, Feng Liu, Bin Liu, Cheng Wang, Zhaojian Wang