Performance Evaluation Criterion at Equal Pumping Power for Enhanced Performance Heat Transfer Surfaces

Figure 1

(a) Longitudinal section of the rectangular duct with 60° v-down discrete rib roughness (𝑒/𝐷_ℎ=0.0469,𝑝/𝑒=10.63,𝑤/𝑒=2.06). (b) Rib arrangements [42].