w mik. Air at (90) flows in a copper tube (K= 324; of (4cm) inner eliameter that has walls (0.6cm) thick that are heated from the outside by waber at (125) . A (0.3cm) thick scale is deposited on the outer surface of the bube whose thermal conductivity is 1.75 1 m.le The air and water side hemb bransfer Coefficients are (221 emel 3605 m²), respectively. Find the overall heat transfer Coefficient k. based on the outer area. Also find water to air keat transfer, and the temperature drop across the scale ele Posite. Ans.(Uo=115-37-1 / ·735-75 W/m, AT3 = 7.CC)
w mik. Air at (90) flows in a copper tube (K= 324; of (4cm) inner eliameter that has walls (0.6cm) thick that are heated from the outside by waber at (125) . A (0.3cm) thick scale is deposited on the outer surface of the bube whose thermal conductivity is 1.75 1 m.le The air and water side hemb bransfer Coefficients are (221 emel 3605 m²), respectively. Find the overall heat transfer Coefficient k. based on the outer area. Also find water to air keat transfer, and the temperature drop across the scale ele Posite. Ans.(Uo=115-37-1 / ·735-75 W/m, AT3 = 7.CC)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:mik.
Air at (90) flows in a Copper tube (k = 384)
of (4cm) inner eliameter that has walls (0.6cm)
thick that are heated from the outside by
waber at (125°C). A (0.3 cm) thick scale is
deposited on the outer surface of the bube
whose thermal Conductivity is 1.75
I
mole
The air and water side hemb bransfer
Coefficients are (22) emel 3605 m), Vespectively.
Find the overall heat transfer coefficient
based on the outer area. Also find water to
air keat transfer, and the temperature drop across
the scale ele Posite.
Ans. (No=115-37015 @ =735.75 W/m, AT3=7.CC)
1
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