Reference no: EM13858504
Assignment:
Part 1:
Heat transfer and pressure drops in a shell and tube heat exchanger
1. Calculate the Log Mean Temperature Difference
2. Adjust the LMTD for a counter flow, one shell pass, two tube pass heat exchanger Tube side
1. Calculate the tube wall thickness required for internal pressure and compare to the actual thickness
2. Calculate the total mass flow and volume flow in the tube side
3. Calculate the flow velocity through each tube
4. Calculate the Reynolds number for the non-Newtonian fluid, obtain the friction factor, calculate the pressure drop through one tube, the Prandtl number and the Nusselt number, and the heat transfer coefficient for the tube side film Shell side
Part 2:
1. Calculate the total mass flow and volume flow in the shell side
2. Calculate the Prandtl number, the equivalent distance between tubes, the Reynolds number, jH for the baffles, and the heat transfer coefficient for the shell side film
Calculate the overall heat transfer coefficient, the heat transfer area required and compare with the available area
Heat transfer and pressure drops in a shell and tube heat exchanger
An asphalt coating mix for road resurfacing requires a shell and tube heat exchanger to heat an asphalt coating mix from 425 F to 500 F to improve application characteristics. The fluid to heat the asphalt is hot oil. The exchanger heat duty is to be 1,000,000 Btu/hr.
- Determine the heating area required and compare it with that of an existing vessel.
- Check the tube wall thickness for internal pressure.
- Calculate the pressure drop through a tube.
- Carry out the calculations in US imperial units, and also report the result of each calculation in SI units (in brackets).
- Sketch a side view with all main parts labelled.
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: 1. Calculate the Log Mean Temperature Difference, 2. Adjust the LMTD for a counter flow, one shell pass, two tube pass heat exchanger Tube side, 1. Calculate the tube wall thickness required for internal pressure and compare to the actual thickness
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