An inventor wants to increase the efficiency of wood-burning stoves by reducing the energy lost through the exhaust stack. he proposes to accomplish this by attaching fins to the outer surface of the chimney, as shown schematically on the picture. the fins are attached circumferentially to the stack, having a base of 0,5cm, 2cm long perpendicular to the surface, and 6cm long in the vertical direction. the surface temperature of the stack is 500 C and the surrounding temperature is 20 C for this initial thermal design, assume that each fin loses heat by natural convection with a convection heat transfer coefficient of 10W/m^2 K. select a suitable material for the fin and discuss the manner of attachment as well as the effect of contact resistance
An inventor wants to increase the efficiency of wood-burning stoves by reducing the energy lost through the exhaust stack. he proposes to accomplish this by attaching fins to the outer surface of the chimney, as shown schematically on the picture. the fins are attached circumferentially to the stack, having a base of 0,5cm, 2cm long perpendicular to the surface, and 6cm long in the vertical direction. the surface temperature of the stack is 500 C and the surrounding temperature is 20 C for this initial thermal design, assume that each fin loses heat by natural convection with a convection heat transfer coefficient of 10W/m^2 K. select a suitable material for the fin and discuss the manner of attachment as well as the effect of contact resistance
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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An inventor wants to increase the efficiency of wood-burning stoves by reducing the energy lost through the exhaust stack. he proposes to accomplish this by attaching fins to the outer surface of the chimney, as shown schematically on the picture. the fins are attached circumferentially to the stack, having a base of 0,5cm, 2cm long perpendicular to the surface, and 6cm long in the vertical direction. the surface temperature of the stack is 500 C and the surrounding temperature is 20 C for this initial thermal design, assume that each fin loses heat by natural convection with a convection heat transfer coefficient of 10W/m^2 K. select a suitable material for the fin and discuss the manner of attachment as well as the effect of contact resistance
Transcribed Image Text:- Two of several
fin rows
Quiescent
air T,
TP
Design Problem 2.1
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