Surge suppression apparatus for compressor-driven system

Details Surge suppression apparatus for compressor-driven system Surge suppression apparatus for compressor-driven system

F - Mech Eng,Light,Heat,Weapons

25

B

341/28, 341/38

F25B 49/00 (2006.01)

Patent

CA 1133094

077119-BWL SURGE SUPPRESSION APPARATUS FOR COMPRESSOR-DRIVEN SYSTEM ABSTRACT OF THE DISCLOSURE Surge in a compressor-driven system, such as a refrigeration system, is precluded by sensing an appropriate parameter, for example the gas flow at the compressor discharge outlet, and developing therefrom a feedback signal which dynamically varies the capacity of the compressor so that the discharge pressure versus discharge flow rate characteristic curve of the compressor always has a negative slope at the operating point, regardless of where that point is located on the curve. By providing a negative slope at all operating conditions, the system is incapable of surge. In order to satisfy variable load requirements, the compressor capacity is adjusted to vary the steady state operating point on the characteristic curve.

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