Christopher Holmes Park
Architects at Vinewood Ave, Bham, MI
License number
Colorado 305990
Issued Date
Aug 25, 2000
Renew Date
Aug 1, 2009
Expiration Date
Jul 31, 2011
Type
Architect
Address
Address
2
648 Vinewood Ave, Bham, MI 48009
Bham, MI
Bham, MI
Professional information
Supercritical Pressure Regulation Of Vapor Compression System By Regulation Of Adaptive Control
US Patent:
6813895, Nov 9, 2004
Filed:
Sep 5, 2003
Appl. No.:
10/655970
Inventors:
Bryan Eisenhower - East Hartford CT
Christopher G. Park - Birmingham MI
Pengju Kang - Hartford CT
Alan Finn - Hebron CT
Tobias Sienel - Manchester CT
Christopher G. Park - Birmingham MI
Pengju Kang - Hartford CT
Alan Finn - Hebron CT
Tobias Sienel - Manchester CT
Assignee:
Carrier Corporation - Syracuse NY
International Classification:
F25B 4900
US Classification:
62115, 621763, 622285
Abstract:
A vapor compression system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated through the closed circuit cycle. Preferably, carbon dioxide is used as the refrigerant. Adaptive control is employed to optimize the coefficient of performance of the vapor compression system. As the system changes over time, a model that operates the system is modified. The model is determined by an adaptive control algorithm including variable coefficients. As the model changes, the variables of the adaptive control algorithm change. A control of the gas cooler is then adjusted to regulate the high pressure of the system, and therefore the coefficient of performance. In a first example, Least Mean Squares (LMS) is used to modify the variables of the adaptive control algorithm to optimize the coefficient of performance. In a second example, the coefficient of performance is optimized by a slowly varying periodic excitation method.