Heat transfer coefficients for free convection

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Reference no: EM13946242

In the analytical treatment of the fin with uniform cross-sectional area, it was assumed that the convection heat transfer coefficient is constant along the length of the fin. Consider an AISI 316 steel fin of 6-mm diame- ter and 50-mm length (with insulated tip) operating under conditions for which Tb = 125°C,Too = 27°C,

Tsur = 27°C, and s = 0.6.

(a) Estimate average values of the fin heat transfer coefficients for free convection (hc) and radiation exchange (hr). Use these values to predict the tip temperature and fin effectiveness.

(b) Use a numerical method of solution to estimate the foregoing parameters when the convection and radiation coefficients are based on local, rather than average, values for the fin.

Reference no: EM13946242

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