HERMAN E PAETOW
Engineers in Spring Grove, PA
License number
Pennsylvania PE011263E
Category
Engineers
Type
Professional Engineer
Address
Address
Spring Grove, PA 17362
Professional information
Method And Apparatus For Applying Dual Centrifugal Compressors To A Refrigeration Chiller Unit
US Patent:
5875637, Mar 2, 1999
Filed:
Jul 25, 1997
Appl. No.:
8/900575
Inventors:
Herman E. Paetow - Spring Grove PA
Assignee:
York International Corporation - York PA
International Classification:
F25B 500
US Classification:
62117
Abstract:
A system and method of applying dual centrifugal compressors to a single evaporator and a single condenser in a refrigeration chiller unit. The condenser is split into two chambers by a divider having the same cross-sectional shape as the condenser and having holes provided through which the tubing provided in the condenser passes. The condenser includes a valve in fluid communication with both chambers of the compressor, for selectively equalizing or separating the pressures within the respective chambers. One or both compressors can be operated, according to the load. An independent condenser pressure can be provided for each centrifugal compressor, and thus the problems encountered by the conventional parallel-compressor refrigeration system can be avoided. With the invention, the refrigeration chiller capacity can be maximized and also adjusted to accommodate variable load requirements.