Design a double pipe heat exchanger (DPHX) to use water for cooling a toluene flow of...

 

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Design a double pipe heat exchanger (DPHX) to use water for cooling a toluene flow of 10,000 Lbm/h from an industrial power station. The cold fluid is available at a temperature of 50 oF, and its maximum flow rate is 12,000 Lbm/h. The outlet temperature of the water should not exceed to 80 oF because of refrigeration system capacity. The outer tube diameter must be less than 4 in. and the inner tube diameter must be greater than 1/2 in. due to constraints arising from space and piping considerations. The toluene must be cooled to a temperature from 100 oF to below 75 oF. Obtain 8 feasible designs if the length of the heat exchanger is restricted to 20 feet (you can use hairpin configuration), and the inner tube is made of Copper Type M, while the outer tube is made of commercial steel schedule 40. Submit: I- An explanation of the steps used to design the heat exchanger including the EES file used to size and analyze the DPHX (comment on whether or not your final design satisfies the hydraulic and fouling criteria) II- Identify at least 8 feasible solutions and summarize their main features in a table. III- Evaluate your solutions and identify the most desirable one in your opinion. Justify your choice by stating the criteria of assessment of the obtained designs NOTE: EES is Engineering Equations Solver(please submit pics of the code if you can not submit files) Design a double pipe heat exchanger (DPHX) to use water for cooling a toluene flow of 10,000 Lbm/h from an industrial power station. The cold fluid is available at a temperature of 50 oF, and its maximum flow rate is 12,000 Lbm/h. The outlet temperature of the water should not exceed to 80 oF because of refrigeration system capacity. The outer tube diameter must be less than 4 in. and the inner tube diameter must be greater than 1/2 in. due to constraints arising from space and piping considerations. The toluene must be cooled to a temperature from 100 oF to below 75 oF. Obtain 8 feasible designs if the length of the heat exchanger is restricted to 20 feet (you can use hairpin configuration), and the inner tube is made of Copper Type M, while the outer tube is made of commercial steel schedule 40. Submit: I- An explanation of the steps used to design the heat exchanger including the EES file used to size and analyze the DPHX (comment on whether or not your final design satisfies the hydraulic and fouling criteria) II- Identify at least 8 feasible solutions and summarize their main features in a table. III- Evaluate your solutions and identify the most desirable one in your opinion. Justify your choice by stating the criteria of assessment of the obtained designs NOTE: EES is Engineering Equations Solver(please submit pics of the code if you can not submit files)