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What are the principles for determining whether to use fixed supports in the design of steam, heat transfer oil, and refrigeration pipelines, and what are the specific criteria for this?
I recommend that you take a look at the books \"Power Piping Handbook\" and \"Thermal Piping Handbook\" – they are very useful. It was with these two books that I learned about external piping
It depends on the length of the pipeline and the changes in thermal stress; generally, sliding supports are used more often!
Multiple factors need to be considered comprehensively to determine this, such as pipe diameter, medium temperature, and unit elongation. The maximum allowable fixing spacing, which is determined based on the pipe diameter and the type of medium, can be found in design manuals and specifications. The linear expansion rate per meter can be determined using the linear expansion coefficient of the medium; at this point, it is necessary to select an appropriate fixing spacing through the use of compensators, ensuring that it remains within the maximum spacing allowed by the fixed supports. It is recommended to use natural compensation as much as possible, as it is safer; moreover, the thrust on the fixing piers is relatively low. For pipes with a pressure exceeding 1.6 Mpa, it is best not to use bellows compensators, as the thrust would be too high.