The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2012
Filed:
Feb. 02, 2009
Applicant:
Thomas B. Hartman, Georgetown, TX (US);
Inventor:
Thomas B. Hartman, Georgetown, TX (US);
Assignee:
Optimum Energy, LLC, Seattle, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25B 1/00 (2006.01); F25B 49/00 (2006.01); G05D 3/12 (2006.01); G05D 5/00 (2006.01); G05D 9/00 (2006.01); G05D 11/00 (2006.01); G05D 17/00 (2006.01); G05D 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved method for sequencing variable speed centrifugal compressors on and off line to ensure optimal operating efficiency in a liquid cooling system under all operating circumstances is described. The present disclosure teaches modifying equipment sequencing decisions (to add or shed a unit), based in part on the position of the compressor inlet vanes. This new approach achieves improved energy efficiency of the overall system by taking into account operating conditions of individual compressors or chillers that may be sub-optimal.