Kwok Chi Cheng

US Patent:

20130019632, Jan 24, 2013

Filed:

Feb 24, 2011

Appl. No.:

13/637128

Inventors:

Tory Deane Werne - Woodstock GA, US
Kwok Chi Cheng - Aspinwall PA, US

Assignee:

KONINKLIJKE PHILIPS ELECTRONICS N.V. - EINDHOVEN

International Classification:

F25J 1/02

US Classification:

62606

Abstract:

Normal operation of an oxygen liquefaction system () may be established responsive to a deviation in current supplied thereto. Current being supplied to a compressor () included in the oxygen liquefaction system may be monitored. The compressor may be deactivated responsive to commencement of a current level deviation event in the monitored current. The compressor may be energized responsive to cessation of the current level deviation event in the monitored current. Performance characteristics of the oxygen liquefaction system may be identified.