Hot water flows at 0.5 m/s in a 2.5 cm inside diameter and 2.66 cm outside diameter smooth copper pipe. The pipe is horizontal in still air and covered with a 1-cm layer of polystyrene foam insulation. For a 65°C water temperature and 20°C air temperature, estimate the heat loss rate per unit length. The convective heat transfer coefficient of hot water and ambient air are 8695 W/m2-K and 2.25 W/m2-K, respectively.
Hot water flows at 0.5 m/s in a 2.5 cm inside diameter and 2.66 cm outside diameter smooth copper pipe. The pipe is horizontal in still air and covered with a 1-cm layer of polystyrene foam insulation. For a 65°C water temperature and 20°C air temperature, estimate the heat loss rate per unit length. The convective heat transfer coefficient of hot water and ambient air are 8695 W/m2-K and 2.25 W/m2-K, respectively.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Hot water flows at 0.5 m/s in a 2.5 cm inside diameter and 2.66 cm outside diameter smooth copper pipe. The pipe is horizontal in still air and covered with a 1-cm layer of polystyrene foam insulation. For a 65°C water temperature and 20°C air temperature, estimate the heat loss rate per unit length. The convective heat transfer coefficient of hot water and ambient air are 8695 W/m2-K and 2.25 W/m2-K, respectively.
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