Relationship between liquid pressure and volume in confined spaces (help needed)
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Question: How can one calculate the relationship between pressure and volume of a liquid in a closed space, such as an oil storage pipeline? For example, if the oil in the pipeline expands due to an increase in temperature, the pressure also rises, which may cause stress on the gaskets; therefore, a pressure relief valve is necessary. But how is the increase in pressure calculated?
Check the coefficient of expansion of the liquid, which relates the change in volume with temperature; then the pressure can be calculated using the equation PV=constant.
I suggest you take a look at this post; it should be helpful. The temperature rise in sealed pipes (without a gas phase) can be quite alarming, so be careful. . . http://bbs.hcbbs.com/thread-995357-1-1.html