1. Engineering
2. Mechanical Engineering
3. in a thermofluids lab a student is analysing a prototype...

# Question: in a thermofluids lab a student is analysing a prototype...

###### Question details

In a thermofluids lab, a student is analysing a prototype shell and tube heat exchanger used to increase the temperature of ethyl alcohol (cp=2670${c}_{p}=2670$ J/kg$\cdot$K) which is passed through the tubes at a rate of 2.1 kg/s where the outlet temperature of the alcohol is 70o${70}^{o}$C and the inlet temperature is 25o${25}^{o}$C. The design consists of 8 tube passes and 2 shell passes. This is achieved by hot water (cp=4190$\left({c}_{p}=4190$ J/kg$\cdot$K) entering through the shell side at 95o${95}^{o}$C and exiting at 45o${45}^{o}$C. The overall heat transfer coefficient is Ui${U}_{i}$ is 950$950$ W/m2${}^{2}\cdot$K. Calculate the heat exchanger's heat transfer surface area.