Question

In a chemical plant a solution of density 1100kg/m3

and specific heat

capacity 4.6 kJ/kg-K is to be heated from 65 °C to 100°C. The required

flow rate of the solution is 11.8 kg/s. A tubular heat exchanger is used

for this with the solution flowing about 1.2 m/s in 25 mm bore iron tubes

and being heated by wet steam at 115°C. The length of the tubes is not

to exceed 3.5m. Taking inside, and outside heat transfer coefficient as

5kW/m2K and 10kW/m2K and neglecting the thermal resistance of the

tube wall, estimate the number of tubes and the number of tube passes

required​

Answer 1

Answer:

i got 19 tubes and 4 passes

Explanation:

please refer the attached pics.

i tried to find the answer to validate but i couldn't find any please correct me if i am wrong