Problems with pressure suppression pipelines
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When temperature changes are significant, hydraulic pressure applied to the pipes has a considerable impact. Is there any formula that can be used to determine the allowable range of pressure changes? I would be extremely grateful if experienced colleagues could provide some guidance.
Did you say something wrong? The coefficient of thermal expansion of liquids does not change much with temperature, while gases are more sensitive to temperature. In the case of hydraulic systems, a pressure drop of no more than 0.05 Mpa within 15 minutes is considered acceptable; for gases, you can calculate the impact of temperature using the formula PV=nRT
Liquid has a significant impact; in just one hour at noon, the pressure increased by 0.15 megapascals
Stabilize for 30 minutes – what do you mean by 1 hour? Besides, the wall thickness is more than sufficient to handle such pressure changes; it can withstand them. Above around 200°C, the allowable stress of the tubing changes; only then should this be taken into consideration, as such temperature increases in the environment remain within acceptable limits