公开(公告)号：US12067333B2

公开(公告)日：2024-08-20

申请号：US17933356

申请日：2022-09-19

申请人： TRANE INTERNATIONAL INC.

发明人： Jian Ming Zhang ,  Lifen Li ,  James P. Crolius ,  Scott A. Munns

IPC分类号： G06F17/18 ,  F25B49/02 ,  G06F30/20 ,  G06F111/10

CPC分类号： G06F30/20 ,  F25B49/022 ,  F25B2500/19 ,  F25B2700/04 ,  F25B2700/1931 ,  F25B2700/21161 ,  F25B2700/21162 ,  F25B2700/21163 ,  F25B2700/21172 ,  F25B2700/21173 ,  G06F2111/10

摘要： A method for estimating refrigerant charge for an HVACR system is provided. The method includes obtaining one or more system parameters during operation. The one or more system parameters include at least one of compressor suction superheat, system mass flow, expansion device mass flow or opening degree, compressor suction saturated temperature, and compressor discharge saturated temperature. The method also includes conducting a regression analysis on the one or more system parameters to determine one or more predictive parameters for estimating the refrigerant charge. The method further includes determining a predictive model based on regression analysis. The predictive model establishes a relationship between the refrigerant charge and the one or more predictive parameters. Also the method includes estimating the refrigerant charge based on the predictive model.

公开(公告)号：US11449650B2

公开(公告)日：2022-09-20

申请号：US16420932

申请日：2019-05-23

申请人： TRANE INTERNATIONAL INC.

发明人： Jian Ming Zhang ,  Lifen Li ,  James P. Crolius ,  Scott A. Munns

IPC分类号： G06F17/18 ,  F25B49/02 ,  G06F30/20 ,  G06F111/10

摘要： A method for estimating refrigerant charge for an HVACR system is provided. The method includes obtaining one or more system parameters during operation. The one or more system parameters include at least one of compressor suction superheat, system mass flow, expansion device mass flow or opening degree, compressor suction saturated temperature, and compressor discharge saturated temperature. The method also includes conducting a regression analysis on the one or more system parameters to determine one or more predictive parameters for estimating the refrigerant charge. The method further includes determining a predictive model based on regression analysis. The predictive model establishes a relationship between the refrigerant charge and the one or more predictive parameters. Also the method includes estimating the refrigerant charge based on the predictive model.