Extended performance evaluation criteria for enhanced heat transfer surfaces

New Correlations and Performance Analysis of Single Phase Laminar Flow Heat Transfer Enhancement for (a) Combined Helical Screw Tape Inserts and Wire Coil Inserts and (b) Combined Ribs and Twisted Tapes

“…Bergles et al [2] have suggested several criteria for the performance evaluation of enhancement devices. The performance of the present geometry has been evaluated on the basis of the following two important criteria:…”

The effect of oil on heat transfer and pressure drop during evaporation and condensation of refrigerant inside augmented tubes

“…Several publications during the past fifteen years have discussed presentation of performance data and rational procedures to evaluate enhanced tube performance (for example, [167][168][169][170][171][172]). Most of the discussions have concerned single-phase heat transfer, but Jensen [171] and Webb [172] concentrated on evaporation and condensation.…”

Numerical investigation of pin-fin thermal performance for staggered and inline arrays at low Reynolds number

“…Bergles and co-workers [18][19] showed that when two independent or co-dependent heat transfer systems are placed under comparison then the possible merits and demerits of one system relative to the other depend on the nature of goals to be achieved and the set of constraints restricting them. Feasible goals may include increasing the heat transfer rate at the same time compacting the size of fins.…”