The Darcy-Weisbach equation is a fundamental relation used to calculate the pressure loss due to friction in a fluid flowing through a pipe or duct. This equation connects the head loss due to friction with factors like the flow velocity, pipe length, diameter, and the friction factor, which is influenced by the pipe's roughness and flow regime. Understanding this equation is crucial for designing and optimizing heat exchangers, as pressure drops can significantly impact their performance and efficiency.
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