A 10‐cm wide and 16‐cm‐high vertical hot surface in 22°C air is to be cooled by a heat sink with equally spaced fins of a rectangular profile. The fins are 0.15 cm thick, 16 cm long in the vertical direction, and have a height of 2.4 cm from the base. Determine the optimum fin spacing and the heat transfer rate by natural convection from the heat sink if the base temperature is 75°C.
k = 0.0279 W/m-K (thermal conductivity)Pr = 0.709 (Prandtl Number)v = 1.82x10-5 m2/s (kinematic viscosity)
Round off your answer to two (2) decimal places.
Optimum Spacing, Sopt (mm) = Heat Transfer Rate, Q (W) =
A 10 Cm Wide And 16 Cm High Vertical Hot Surface In 22 C Air Is To Be Cooled By A Heat Sink With Equally Spaced Fins Of 1 (52.42 KiB) Viewed 44 times
H = 2.4 cm L = 16 cm Ts = 75°C W = 10 cm t = 1.5 mm T∞ = 22°C
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