Calculation of shell and tube heat exchangers
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We need to use a shell-and-tube heat exchanger for the subsequent distillation steps. Could experts advise on how to design such a heat exchanger? Thank you! Urgent beyond measure
Please help quickly, everyone! Thank you!
Determine the design conditions based on the process requirements, and then proceed in accordance with the heat exchanger design specifications.
Find a book on heat exchanger design and calculation, and everything will become clear
Section 1 Recommended Design Procedures I. Process Design 1. Create a flowchart. 2. Calculate the heat transfer capacity Q of the heat exchanger based on the production task. 3. Select the heat carrier and determine its flow rate. 4. Determine the flow paths of the cold and hot fluids. 5. Calculate the qualitative temperature to determine the physical property data of the fluid (density, specific heat, thermal conductivity, etc.). 6. Calculate the average heat transfer temperature difference initially. 7. Select or estimate the K value based on experience or on-site data, to initially determine the required heat transfer area. 8. Conduct a preliminary design of the heat exchanger dimensions based on the initially calculated heat exchange area. This includes pipe diameter, pipe length, number of pipes, number of tube passes, pipe arrangement pattern, and shell inner diameter (which needs to be rounded). 9. Calculate K. 10. Verify the average temperature difference D. 11. Verify the heat transfer amount, requiring a margin of 15–25%. 12. Calculation of the pressure drop in the tube side and shell side. II. Mechanical Design 1. Determination of the housing diameter and calculation of the housing wall thickness. 2. Selection of heat exchanger head. 3. Selection of heat exchanger flanges. 4. Determination of the tube sheet dimensions. 5. Calculation of pipe pulling force. 6. Selection and calculation of baffle plates. 7. Calculation of temperature difference stress. 8. Takeover, selection of takeover flanges, and hole reinforcement, etc. 9. Draw diagrams of the main components. III. Prepare a summary table of calculation results IV. Draw the heat exchanger assembly diagram V. Specify technical requirements VI. Write the design specification
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It’s quite complicated, buddy – there’s no free money in this world; you have to find the relevant materials on your own and do the calculations.
It’s useful to figure out the process conditions – pressure, temperature, flow rate, or heat load – using the HTFS software for calculations
If it’s about design, software isn’t necessary; can’t it be done just by providing the basic design data?
I work in condenser design; feel free to contact me if you need any assistance at QQ28601848 or 13706402215