Process Design: 【One Question per Day】March 12–13, 2011 (Weekend)
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This post was last edited by ziyouruifeng on 2011-3-11 22:04. When selecting the process for determining the heat transfer medium during the design phase, those that use the tube side are ( ), and those that use the shell side are ( ). A. High-pressure fluid ； B. Steam ； C. Fluids prone to scaling ； " h8 O/ F8 c8 D* a D, corrosive fluids ； E. Fluids with high viscosity ； F. The cooled fluid ； I hope all friends who enjoy the sea will participate actively: handshake. There are rewards available: victory:. Please reply with the answers in a hidden format; otherwise they will not be valid:'( . Hidden method: http://bbs.hcbbs.com/thread-492556-1-1.html Please do not edit the ‘L’ after replying. Answer: ACD respectively ； BEF
There is a lot of disagreement regarding whether steam should flow in the tube side or the shell side; I specifically searched for this, and there’s a thread on the forum at http://bbs.hcbbs.com/viewthread.php?tid=573502
A High-pressure fluids B Steam D, Corrosive fluids Flow in the tube side; C, Fouling-prone fluids E, Fluids with high viscosity F, Fluids to be cooled Flow in the shell side
Scheduling: A, High-pressure fluid； C. Fluids prone to scaling ； D. Corrosive fluids ； E. Fluids with high viscosity ； Shell side: B, steam ； F. The cooled fluid ； From the perspective of equipment design: High-pressure, corrosive fluids should flow inside pipes. From the perspective of heat transfer efficiency: fluids with high viscosity or low flow rate should be used in the tube side. Placing the fluid with higher thermal resistance in the shell side can increase the convective heat transfer coefficient and enhance heat transfer. The cooled fluid should flow through the shell side to facilitate heat transfer. From the perspective of cleaning and convenience: Fluids that are dirty or prone to scaling should flow through the tube side, to facilitate the cleaning of the heat exchange tubes. Steam generally flows through the shell side, which facilitates the discharge of condensate; moreover, the steam is relatively clean, so the shell side does not need to be cleaned.
Those in the pipe side are: ACDE; those in the shell side are: BF
When selecting the flow path for the heat transfer medium during the design process, those that flow through the tube side include (F: the fluid to be cooled; B: steam; A: high-pressure fluid), while those that flow through the shell side include (C: fluids prone to scaling)； D. Corrosive fluids ； E. Fluids with high viscosity ； ).
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Reply 1# ziyouruifeng: ACD is used for the tube side, while BEF is used for the shell side
By using corrosive media in the tube side, the requirements for the material of the casing can be reduced； Media that tend to form scale are placed in the tube side, facilitating cleaning and maintenance ； Media under higher pressure flows through the tube side, which helps to reduce the mechanical strength requirements for the shell ； Media with high viscosity and low flow rate flow through the shell side, which can improve the heat transfer coefficient. Therefore: ACDEF go through the pipe side, and B goes through the shell side.