Heat Transfer Calculator
Calculate heat transfer rates for conduction, convection, and radiation. Select a mode below.
Fourier's Law: Q = kA(T1-T2)/L
Heat Transfer Rate
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Watts (W)
Heat Transfer Rate
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BTU/hr
Heat Flux
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W/m²
How this was calculated
Conduction (Fourier): Q = kAΔT/L
Convection (Newton): Q = hA(Ts - Tf)
Radiation (Stefan-Boltzmann): Q = εσA(T1&sup4; - T2&sup4;), σ = 5.67×10&supmin;&sup8; W/(m²·K&sup4;)
1 W = 3.412 BTU/hr. Heat flux = Q/A.
Need help with process heat transfer design, insulation analysis, or thermal simulation?
Book a free strategy call →Understanding Heat Transfer
Heat transfer occurs via three mechanisms: conduction (through solids), convection (between a surface and fluid), and radiation (electromagnetic waves). Most real systems involve combinations of all three.
In petroleum operations, heat transfer calculations are essential for wellbore heat loss during steam injection, surface facility design, pipeline insulation, heat exchangers, and thermal recovery processes (SAGD, CSS).
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