Decide whether a 1 shell 2 tube pass will be suitable.

Here are the calculations for Question 2:

2.1. Decide whether a 1 shell 2 tube pass will be suitable.

To determine the suitability of a 1 shell 2 tube pass heat exchanger, we examine the temperature profile.
Given temperatures:

• Hot oil inlet ($T_{h,in}$): $200 \text{ °C}$
• Hot oil outlet ($T_{h,out}$): $40 \text{ °C}$
• Cooling water inlet ($T_{c,in}$): $30 \text{ °C}$
• Cooling water outlet ($T_{c,out}$): $50 \text{ °C}$

We observe that the hot fluid outlet temperature ($