Design case of 1 heat exchanger with special requirements
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This post was last edited by wiseboy on 2019-4-7 at 14:10. Conditions: Shell side: flue gas, flow rate of 10,000 kg/h, inlet temperature of 125°C, outlet temperature of 70°C. (It was mistakenly written as 75°C; thanks to the discreet expert for pointing it out.) Tube routing: circulating water, 30°C at the inlet, 40°C at the outlet. Heat exchange tube: φ25×2.5. Requirement: Design a fixed-tube-sheet heat exchanger with a required shell-side pressure drop of 80 Pa. Analysis: The uniqueness of this heat exchanger lies in the requirement for a shell-side pressure drop of 80 Pa. Therefore, it has the following characteristics: Any measure to enhance heat transfer in the shell side is not advisable—in order to reduce the shell side resistance, elements such as fins and baffle rods cannot be used (for straight tubes) ； φ25×2.5 heat exchange tubes; the conventional tube center distance is 32, but this isn’t feasible here — to reduce the resistance in the shell side, the tubes must be arranged more sparsely (50) ； The conventional baffle spacing also doesn’t work here—to reduce the resistance in the shell side, the baffles must be arranged more sparsely (only 1 baffle was used) ； Difficulty: Adjusting the tube center distance and baffle spacing requires a great deal of effort and patience. Tip: Since the voltage drop is very small, the heat exchange efficiency is extremely poor—the K value is very low. Design: Heat Exchanger Master software. With software for calculation, the difficulty is significantly reduced, and it is possible to design this heat exchanger within 5 minutes. Now, I’d like to share the design results with everyone:
Heat exchanger master software. Which version is the latest stable one?
This is the latest version. However, you don’t need to worry about this version issue: once the latest version is released, the software will automatically prompt you to update and provide a download link.
It costs money, right? There’s also a user ID and expiration date on it.
I’ve learned it; it seems the outlet temperature on the flue gas side was written incorrectly
This post was last edited by wiseboy on 2019-3-28 at 17:07. Of course, I’m using the official version of Heat Exchanger Master. Not only this software, but my PROII, Aspen, PDS, AutoCAD, Office, BoxHeater – all of them are genuine, legal software.
This post was last edited by wiseboy on 2019-3-28 at 17:04. There’s not a single mistake; it meets the requirements specified in the tender document, and considerations have been given to the outlet temperature. But it can’t be the bid you submitted – did you make a mistake? :lol
This post was last edited by Low-Key Pro on 2019-3-28 at 17:07. The condition stated at the top is 75, but in the software screenshot it’s 70. The expert must be joking :P
It’s correct in the software; 75 is a typo in the text. I’ll fix it. Thank you for pointing it out.
Register one dedicated for training; that’s possible!