Regarding
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This post was last edited by Dreamwalker on 2019-5-29 at 16:43
From the perspective of the heat exchanger structure, the heat exchange area per unit volume of the heat exchanger is the same. First of all, I personally think that if it’s reversed, it will appear visually unstable in terms of its center of gravity. Secondly, if the order is reversed, then, while meeting the heat exchange requirements, the lower main cooler will reach its full liquid level, whereas the upper main cooler will have a very low liquid level (which is also unfavorable for heat exchange). This is not conducive to system stability from a control perspective, and it also results in waste from a material perspective. Under normal conditions, when the upper main cooler reaches a certain liquid level, it will overflow (there are downcomers and overflow holes), thereby ensuring that the lower main cooler is filled first. These are merely personal opinions; please correct or add anything if necessary.
I think the two are different, as the main cooler operates in a fully submerged manner – the upper main cooler is 2500 mm submerged and the lower one is 3500 mm submerged; as a result, the heat exchange areas of the upper and lower main coolers are not identical.
The simplest way to confirm this is to look at the design documents, which specify the heat exchange area~~
You might want to take a look at the first issue of Cryogenic Technology 2015, titled “Research and Development of Vertical Three- and Four-Layer Condensation Evaporators”