6533b86efe1ef96bd12cbdd9

RESEARCH PRODUCT

Local Effects of Longitudinal Heat Conduction in Plate Heat Exchangers

Michele Ciofalo

subject

Fluid Flow and Transfer ProcessesMaterials scienceConvective heat transferMechanical Engineeringlongitudinal heat conductionPlate heat exchangerThermodynamicsconjugate heat transferHeat transfer coefficientMechanicsHeat sinkCondensed Matter Physicsplate heat exchangerHeat transferHeat spreaderMicro heat exchangerPlate fin heat exchangerSettore ING-IND/19 - Impianti Nucleari

description

Abstract In a plate heat exchanger, heat transfer from the hot to the cold fluid is a multi-dimensional conjugate problem, in which longitudinal heat conduction (LHC) along the dividing walls often plays some role and can not be neglected. Large-scale , or end-to-end, LHC is always detrimental to the exchanger’s effectiveness. On the contrary, if significant non-uniformities exist in the distribution of either convective heat transfer coefficient, small-scale , or local, LHC may actually enhance the exchanger’s performance by improving the thermal coupling between high heat transfer spots located on the opposite sides of the dividing wall.

yearjournalcountryeditionlanguage
2007-07-01
10.1016/j.ijheatmasstransfer.2006.12.006http://hdl.handle.net/10447/18895