Urea-evaporative high-efficiency ammonia cooler
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Could anyone provide me with the drawings for a urea-evaporation type high-efficiency ammonia cooler? The heat exchange area is 400, the operating pressure is 1.67 MPa, the operating temperature ranges from 25 to 35 degrees, and the fluid involved is NH3. I don’t know what the structure of this equipment looks like; anyone who can provide such drawings, even in simplified form, would be greatly appreciated.
It’s very simple. It works just like ordinary evaporative cooling. There are many posts on our forum regarding evaporative cooling; you can find them by searching. Let me explain it briefly. At the top is the axial flow fan; below that are the tubes, the water collector, and the tube bundles used for evaporation. Further down is the air inlet, and beneath that is the water tank. Water is pumped from the tank to the tubes above, where it is sprayed onto the tube bundles below. Air enters through the inlet, carrying away the water vapor formed as a result of evaporation, which is then extracted by the axial flow fan at the top. The water collector captures any water that has not evaporated and sends it back to the tank, which can receive additional water to compensate for what has evaporated. Ammonia flows inside the tube bundles; it condenses into liquid ammonia, and the heat generated is absorbed by the evaporation of water outside. The air also experiences a slight temperature increase, but this effect is minimal.
Moderator, can you find such a picture for me? It’s better if it’s CAD; the images aren’t clear. What I need right now is exactly the device you mentioned. Thank you.
You can view pictures of evaporative cooling at the following link: http://bbs.hcbbs.com/thread-365064-1-1.html. The evaporative cooling units shown in these pictures have the same appearance and structure as urea-ammonia coolers; the only difference might be the material used for the internal heat exchange tubes.