| 摘要 |
<p>A system and method of applying dual centrifugal compressors (48, 50) to a single evaporator (52) and a single condenser (58) in a refrigeration chiller unit. The condenser (58) is split into two chambers (62, 64) by a divider (60) having the same cross-sectional shape as the condenser (58) and having holes provided through which the tubing (68) provided in the condenser (58) passes. The condenser (58) includes a valve in fluid communication with both chambers (62, 64) of the condenser, for selectively equalizing or separating the pressures within the respective chambers (62, 64). One or both compressors (48, 50) can be operated, according to the load. An independent condenser pressure can be provided for each centrifugal compressor (48, 50), 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.</p> |
