A-to-Z Guide to Thermodynamics,
Heat & Mass Transfer, and Fluids Engineering
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Bulk enthalpy

Ratio of the enthalpy transported by the entire mass of flowing fluid per unit time across a given flow cross section and the mass flow rate.

where h is the enthalph of the fluid per unit mass, ρ is the density of the fluid, u is the velocity component perpendicular to the flow cross section, and s is the area of flow cross section.

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