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Description: Overall heat transfer coefficient calculation on a wall.

Equations/Symbols:


Calculate:
Insert surface area (A), wall surface temperatures (T_w,1), (T_w,2), surroundings temperatures (T_sur,1), (T_sur,2), heat transfer coefficients (h₁), (h₂), wall thickness (L_w), wall thermal conductivity (k_w), surface wall emissivities (ε_w,1),(ε_w,1) and press 'Calculate'.

A (m²): T_w,1 (K): T_w,2 (K): T_sur,1 (K): T_sur,2 (K): h_w,1 (W/m².K): h_w,2 (W/m².K): L_w (m): k_w (W/m.K): ε_w,1 (-): ε_w,2 (-):

Radition heat transfer coefficient: hrad,1=5.2421 W/(m2.K) hrad,2=5.7934 W/(m2.K)	Thermal resistances: Rconv,1=0.2000 K/W Rconv,2=0.2000 K/W Rcond=1.0000 K/W Rrad,1=0.1908 K/W Rrad,2=0.1726 K/W Rtot=1.1903 K/W	Overall heat transfer coefficient: UA=0.8401 W/K U=0.8401 W/m2.K

Heat Transfer Research Group - HTRG
University of Sao Paulo - USP