Open Access

Table 3

Correlations for Nusselt number and Fanning fraction factor in PCHE channels with different fluids.

References Channel shape Working fluid Correlations for Nusselt number Application conditions
Kim et al. [35] Straight Water 0.7203 Re0.1775 Pr1/3 100 < Re < 850
1.3383 Re−0.5003
Zhao et al. [25] Straight Nitrogen 0.3791 Re0.5887 Pr0.288 19379 < Re < 40 171
33.24 Re−0.8304 + 0.0002596
Meshram et al. [14] Straight CO2 0.0718 Re0.71 Pr0.55 5000 < Re < 26 000
0.8657 Re−0.5755 + 0.00405
Kwon et al. [36] Zigzag Water 0.278 Re0.452 Pr0.333 150 < Re < 800
95.431 Pr0.333
Kim and No [37] Zigzag Helium 4.089 + 0.00365 Re1.0 Pr0.58 0 < Re < 2500, 0.66 < Pr < 13.41
 + 0.0487 Re−0.16
Chen et al. [38] Zigzag Helium 0.005516 ± 0.0016 Re0.69195 ± 0.00559 1400 < Re < 2200
17.639 Re0.8861 ± 0.0017
Nikitin et al. [18] Zigzag CO2 Hot channel: h = 2.52 Re0.681 (−1.402e−6 ± 0.087e−6) Re + (0.04495 ± 0.00038) Hot channel: 2800 < Re < 5800
Cold channel: h = 5.49 Re0.625 (−1.545e−6 ± 0.099e−6) Re + (0.09318 ± 0.0009) Cold channel: 6200 < Re < 12 100
Baik et al. [20] Zigzag CO2 0.8405 Re0.5704 Pr1.08 15 000 < Re < 85 000
0.0748 Re−0.19