A thin walled, steel pipe of 6 cm length and 50 mm internal diameter is heated by condensing steam from the outside, which maintains the internal wall temperature at 100 ◦C. The tube has V˙ = 2.5 · 10...

A thin walled, steel pipe of 6 cm length and 50 mm internal diameter is heated by condensing steam from the outside, which maintains the internal wall temperature at 100 ◦C. The tube has V˙ = 2.5 · 10⁻⁴
m³/s of water flowing through it, that is heated from 20 ◦C to 60 ◦C. How large is the mean heat transfer coefficient over the pipe length? Properties of water at 20 ◦C: density = 998.3 kg/m³, specific heat capacity cp = 4.178 kJ/kgK.