The process below shows a combustion of fuel inside a furnace. The hot flue gas generated from the furnace is required to be cooled down from 1100 C to 180 C using a heat exchanger before it can be fed into the reactor. As a process engineer, you are needed to design the heat exchanger for the process as shown in Figure 1. You are required to design the most economical for the system. 2. Chemical Design of Heat Exchanger . i. Calculate the log mean temperature difference for your heat exchanger ii. Calculate the chemical design of your heat exchanger Air 36OO * 30 * Flue gas 4400 kg Flue gas kati 1B NE 11 FURNACE REACTOR HEAT EXCHANGER Fuel 800 kg/h t Figure 1: Combustion of fuel inside a furnace