F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
341/26
F25B 49/00 (2006.01) F25B 49/02 (2006.01) G05D 23/20 (2006.01)
Patent
CA 1158745
METHOD AND APPARATUS FOR CONTROLLING CAPACITY OF A MULTIPLE-STAGE COOLING SYSTEM Abstract of the Disclosure In one exemplar embodiment, method and apparatus for controlling capacity of a multiple-stage cooling system is disclosed which utilizes means for establish- ing a single predetermined cooling stage "cut-in" pres- sure and a single predetermined cooling stage "cut-out" pressure, means for determining that the "cut-in" or "cut-out" pressures have been reached in the system, a delay means for introducing a selected minimum time delay after determining that the refrigerant fluid pressure has either reached the established "cut-in" or "cut-out" pressures, and control means for control- ling the turning on or off of the next cooling stage after the time delay has elasped.
357253
Alsenz Richard H.
Meredith W. R.
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