Thermohydraulic Performance Improvement in Heat Exchanger Square Duct Inserted with 45° Inclined Square Ring

Figure 21

TEF versus s/H for the heat exchanger square duct installed with the 45° ISR at (a) b/H = 0.05, (b) b/H = 0.10, (c) b/H = 0.15, (d) b/H = 0.20, (e) b/H = 0.25, and (f) b/H = 0.30.

(a)

(b)

(c)

(d)

(e)

(f)