A 1.4 m long tube with an inner diameter of 1.25 cm is subject to a uniform wall heat flux of 2.43 × 10 4 W/m 2 . The tube is cooled by an organic oil, with an inlet temperature of 0°C. Calculate the...

A 1.4 m long tube with an inner diameter of 1.25 cm is subject to a uniform wall heat flux of 2.43 × 10⁴
W/m²
. The tube is cooled by an organic oil, with an inlet temperature of 0°C. Calculate the wall inner surface temperature at exit, for the following two oil mass flow rates:

a. 0.11 kg/s

 b. 1.26 kg/2

The oil average properties are