When comparing the two heat exchange methods, which one is better?
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This post was last edited by gn_1984 on 2015-9-25 09:37. For example, if I want to insulate a container, steam is used for insulation. The first method is to create a jacket-style insulation around the outside of the container, covering it entirely. The second method involves using pipes to encircle the container. Which of these two methods is more effective, assuming that the material used for direct covering is the same as that used for the pipes?
It must be the high heating effect of the jacket. But if such a high temperature isn’t necessary, then a jacket isn’t required.
It’s just for insulation, to prevent the contents inside from getting damp
I think it should be the first one, for the same reason as a thermos bottle
But while considering the heat exchange efficiency, it’s also necessary to take into account the economic value. At present, it’s not entirely clear how large the difference between these two aspects is; in other words, it’s not clear whether there are any other alternatives
The poster should also consider the ultimate fate of the steam after insulation; if there is a place where it can be utilized downstream, it is recommended to use the second approach. After all, less heat is required for insulation, and various factors such as the comprehensive utilization of energy need to be taken into account.
It is discharged directly downstream; we want to use the flue gas for insulation purposes
For simple heat retention applications, one can simply use steam pipes to supply steam to the bottom of a container filled with water, and a temperature switch can be used to control whether steam needs to be supplied or not. The cost of this approach is low :)
The solution proposed by the original poster is more akin to applications in heat exchange
It depends on the medium inside. If steam leakage has a significant impact on the medium, external heating is used; otherwise, internal heating is employed, as it results in less heat loss!
If it’s just for simple heat retention and moisture prevention, using external coils is a simpler solution~~ If the medium permits, consider whether electric heating would be suitable~~