Saturated ethylene glycol at 1 atm is heated by a

Chapter 10, Problem 10.15

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Saturated ethylene glycol at 1 atm is heated by a hori-zontal chromium-plated surface which has a diameter of200 mm and is maintained at 480 K. Estimate the heat-ing power requirement and the rate of evaporation. Whatfraction is the power requirement of the maximumpower associated with the critical heat flux? At 470 K,properties of the saturated liquid are ??0.38?10?3N?s/m2, cp?3280 J/kg?K, and Pr?8.7. The saturatedvapor density is ??1.66 kg/m3. Assume nucleate boil-ing constants of Cs,f?0.01 and n?1.0.

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