Heat exchange – Gradated heat transfer structure
Reexamination Certificate
2006-07-11
2006-07-11
Leo, Leonard R. (Department: 3753)
Heat exchange
Gradated heat transfer structure
C062S471000
Reexamination Certificate
active
07073572
ABSTRACT:
An evaporator for a refrigeration system is disclosed which includes a tube bundle with various kinds of tubes. Depending upon the size of a tube bundle, at least two different kinds of tubes are used along the height of the tube bundle. Highly efficient nucleate boiling characteristics tubes are used in the lower section and prime surface or only inside surface enhanced tubes are used in the top section to minimize the adverse effects of vapor blanketing. Tubes in the mid sections could be the same or different than the tubes in the lower and upper sections.
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Leo Leonard R.
Mantooth Geoffrey A.
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