Optimized offset strip fin for use in contact heat exchangers

Details Optimized offset strip fin for use in contact heat exchangers Optimized offset strip fin for use in contact heat exchangers

1991-03-01

1992-04-28

Flanigan, Allen J.

Heat exchange

With agitating or stirring structure

165154, 165916, F28F 1312

Patent

active

051079224

ABSTRACT:
An offset strip fin for use in compact automotive heat exchangers is disclosed. The offset strip fin has multiple transverse rows of corrugations extending in the axial direction wherein the corrugations in adjacent rows overlap in order that the oil boundary layer is continually re-started. The fin dimensions have been optimized in order to achieve superior ratio of heat transfer to pressure drop along the axial direction. In one aspect, an compact concentric tube heat exchanger has an offset strip fin located in an annular fluid flow passageway located between a pair of concentric tubes. The preferred range of lanced lengths is determined to be between 0.035" to 0.075" for periodically developed flow. Maintaining the lanced length in the regime of periodically developed flow is advantageous in that it gives a higher heat transfer coefficient than is achievable with fully developed flow. This also provides the added advantage that variations in the shape of the flow passages from the rectangular do not impact negatively on the heat transfer.

REFERENCES:
patent: 2990163 (1961-06-01), Farrell
patent: 3197975 (1965-08-01), Boling
patent: 3474513 (1969-10-01), Allingham
patent: 3732921 (1973-05-01), Hilicki et al.
patent: 3763930 (1973-10-01), Frost
patent: 3831247 (1974-08-01), Degroote
patent: 4096616 (1978-06-01), Coffinberry
patent: 4991643 (1991-02-01), Price et al.

Affiliated with

Also associated with

Rating

Optimized offset strip fin for use in contact heat exchangers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optimized offset strip fin for use in contact heat exchangers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimized offset strip fin for use in contact heat exchangers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1241275