Calculation of the individual heat transfer coefficient
Forced convection, laminar flow
The following equation is valid for laminar flow conditions (Sieder & Tate): | ||
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where
α = individual heat transfer coefficient [W/m2·K] dh = hydraulic diameter [m] = 4·A/s A = cross-sectional area [m2] s = wetted perimeter [m] λ = thermal conductivity [W/m·K] μb = dynamic bulk viscosity [Pas] μw = dynamic wall viscosity [Pas] L = tube length [m] Re = Reynolds number [ - ] Pr = Prandtl number [ - ] | |
The equation is valid for: |
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A large number of other equations are available in literature, for different fluids, flow conditions and geometries. |
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Dimensionless numbers and equations |
Forced convection, turbulent flow |
Typical Nu - Pr - Re relationship |
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