Heat exchange – With coated – roughened or polished surface
Reexamination Certificate
2006-04-18
2006-04-18
Walberg, Teresa J. (Department: 3753)
Heat exchange
With coated, roughened or polished surface
C165S907000, C165S911000
Reexamination Certificate
active
07028763
ABSTRACT:
Heat transfer in coolant circuits, as in an internal combustion engine for example, can be beneficially enhanced by maintaining the coolant in a nucleate boiling state, but undesirable transitions to a film boiling state are then possible. The disclosed coolant circuit has selected surface(s) that have a tendency to experience high heat flux in comparison to adjacent surfaces in the coolant circuit. These surfaces are provided with a surface configuration, such as a matrix of nucleation cavities, which has a tendency to inhibit a change in boiling state. The surface configuration can be provided on the parent coolant circuit surface or on a surface of an insert positioned in the coolant circuit. Thus, transitions to film boiling can be effectively avoided at locations in the coolant circuit that are susceptible to such transitions.
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Garner Colin Peter
Holland Adrian
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner LLP
Walberg Teresa J.
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