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I'm trying to design a cooling system for cooling nitrogen at 300°C. My original design (which is very open to modifications) is an aluminum ring block with exterior fins and vertical holes through the block connected end to end to form a continuously undulating gas line. An amazing engineer proposed flowing the gas through multiple holes simultaneously to address the pressure drop problem along the original single gas line, but any better approach is encouraged. My design operates by submerging the block into a water the size an Olympic swimming pool at 20°C. 468 g of nitrogen driven out of a vessel originally pressurized to ~5000 psi goes through the cooling system in roughly 10 seconds. The aim is to be able to cool the nitrogen down to 25°C as it exits the cooling system at that staggering flow rate.

What mass, geometry, and feature of the aluminum block, and/or modifications to the original design is required to achieve the stated aim.

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  • $\begingroup$ I don't understand why you don't use a suitable off-the shelf heat exchanger. Is this a continuous or a batch process? To what pressure will the nitrogen vent, why does adiabatic cooling not suffice. Also where's the sketch of your original design. $\endgroup$
    – mart
    Feb 20 '19 at 16:01
  • $\begingroup$ Also, without sounding harsh, are you qualified to design and build equipment for these pressures? $\endgroup$
    – mart
    Feb 20 '19 at 16:02
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    $\begingroup$ @mart have a look at this question then answer your own... engineering.stackexchange.com/q/25985/10902 $\endgroup$
    – Solar Mike
    Feb 20 '19 at 16:19
  • $\begingroup$ That's because off-the-shelf isn't suitable for the context of operation of the device. I don't understand what you mean by batch or continuous process, it'll kind of you to explain. ~120 psi. Adiabatic cooling isn't suited to the application, the system isn't meant to be powered nor concealed. I'm not sure the sketch is necessary, it can be easily pictures from the above description. $\endgroup$
    – TechDroid
    Feb 20 '19 at 16:27
  • $\begingroup$ I opened this new post to further put the situation in a more design oriented state. The answers in the post engineering.stackexchange.com/questions/25985/… doesn't answer this questions given all the new information. $\endgroup$
    – TechDroid
    Feb 20 '19 at 16:34