I’m confused about the heat exchange area of the external coil heat exchange reactor~
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This post was last edited by Marshal Tianpeng on 2017-1-21 at 10:10. How can the heat exchange area of an external coil heat exchanger reactor be made so much larger than that of a jacket? For a tank with a volume of 20 cubic meters, I calculated that the area of the jacket is around 40 square meters; according to the manufacturer’s data, the heat exchange area of the external coil is over 100 square meters. I guess what I mean is that the external coil is wound around the outer wall of the reactor; no matter how large the contact area is, it’s still limited to the surface area of the reactor’s outer wall. What’s going on here? ? ? Is the brain short-circuiting? I hope some experts can point out where I made mistakes, and I also seek guidance from manufacturers of external coil reaction kettles
How could it possibly have a larger heat exchange area than that of a jacket? A high heat transfer coefficient is easy to understand
In the picture, only the outer coil is visible; no jacket is seen. Furthermore, the jacket is a jacket, and the outer coil is an outer coil; the two are not comparable. Check the areas of both in the material section of the drawings, the data sheet, or the material list according to the diagrams.
I agree with you; I just can’t figure out why it can be that large. It goes without saying that a high heat transfer coefficient is involved； However, the manufacturer clearly states that the external coil area of this 20-cubic-meter tank is 100 square meters, while my calculations show that the external surface area of the equipment is only around 40 square meters. What's going on?
This one. . . . . I also only looked up information about the manufacturer online, so it’s difficult to confirm with them directly. I hope there are experts in this field on the forum who can provide authoritative answers~
I’m comparing two types of heat exchange; of course I need to do that, by comparing the heat transfer coefficients and the heat exchange areas
Specifications of the previous manufacturer. . . Hu Biao’s, perhaps?
You are right; in a reactor that has only an external coil, the maximum heat exchange area for the material inside the reactor is the area of the reactor walls. For heat dissipation to the air outside the tank, it is certainly not the surface area of the tank wall. Moreover, the ordinary outer half-tube is far smaller than the area of the boiler wall. Only the full and half tubular reactors introduced by me on Haichuan.com have an area equal to that of the reactor wall. You can take a look.
Uh, could it be that I’ve encountered a fake reactor manufacturer? . . . . It’s all fake; even the heat exchange area is fake. . . . :Lol, could you send me a link? Do you deal in external coil reaction kettles? So if the heat exchange area of the external coil is insufficient, can we just add an internal coil to solve the problem? If the external boiler heat exchanger option is not considered. . . . How large can the inner coil be? 100 square meters?