Determine if a 1 shell and 2 tube pass heat exchanger is suitable given the following temperatures: Hot oil in/out: 200°C/40°C, Cooling water in/out: 30°C/50°C.

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

The temperatures are:

• 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 ($T_{c,out}$): $50 \text{ °C}$

A temperature cross occurs when the outlet temperature of the hot fluid is lower than the outlet temperature of the cold fluid.
In this case, $T_{h,out