A plate-type fin made of AISI steel (k = 58.3 W/m-K) having a length of 150...
A plate-type fin made of AISI steel (k = 58.3 W/m-K) having a length of 150 mm, a thickness of 25 mm, a base temperature of 250 C and a width w is exposed to a convection environment at 20 C with an h = 25 W/m2-K.
a) Determine q' using the fin equations.
b) Determine q' using the definition of fin efficiency and the efficiency plots in the book (graphical solution).
width is not giving nor width units.
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A plate-type fin made of AISI steel (k = 58.3 W/m-K) having a
length of 150...
Consider a plate-type fin made of AISI 1010 steel attached to an isothermal wall which is...
Consider a plate-type fin made of AISI 1010 steel attached to an isothermal wall which is maintained at 250 C. The fin has a length of 150mm, a thickness of 25mm and a width w. Argon at 20 C blows over the fin giving a convective heat transfer coefficient of 25 W/m-K. Calculate heat transfer rate per unit width using the graphical method and checking the answer with the appropriate equation.
Consider a plate-type fin made of AISI 1010 steel attached to an isothermal wall which is...
Consider a plate-type fin made of AISI 1010 steel attached to an isothermal wall which is maintained at 250 C. The fin has a length of 150mm, a thickness of 25mm and a width w. Argon at 20 C blows over the fin giving a convective heat transfer coefficient of 25 W/m-K. Calculate heat transfer rate per unit width using the graphical method and checking the answer with the appropriate equation
A large stainless steel (AISI 316) plate having a thickness of 5 mm is initially at...
A large stainless steel (AISI 316) plate having a thickness of 5 mm is initially at a temperature of 70°C, and both sides of the plate are suddenly exposed to a convection environment at 20°C with the heat transfer coefficient of h= 800 W/m 2 oC. What will be the center and surface temperatures of the plate after 10 s? For stainless steel (AISI 316), α = 348x10-6 m2/s and k = 13.4 W/m K.
Consider a rectangular fin (k = 180 W/m-K) of length L =10 mm, thickness i =1...
Consider a rectangular fin (k = 180 W/m-K) of length L =10 mm, thickness i =1 mm, and width w» t. The base temperature of the finis Ty = 150°C, and the finis exposed to a fluid of temperature T, =25°C. Assuming a uniform convection coefficient of h = 110 W/m2.K over the entire fin surface, determine the fin heat transfer rate per unit width 4; efficiency ng: effectiveness es, thermal resistance per unit width and the tip temperature T...
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A pin fin of uniform, cross-sectional area is fabricated of an aluminum alloy (k= 160 W/m·K)....
A pin fin of uniform, cross-sectional area is fabricated of an
aluminum alloy (k= 160 W/m·K). The fin diameter is D= 4 mm, and the
fin is exposed to convective conditions characterized by h= 220
W/m2·K. It is reported that the fin efficiency is ηf=
0.55. Determine (a) the fin length L and the fin
effectiveness ɛf. Account for tip convection.
L = ? mm
f
= ?
A 100-mm-thick steel (AISI 1010) plate, which is initially at a uniform temperature of 200°C needs...
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A stainless steel block (H 0.1 m and k 16 W/(m K)) that is perfectly insulated...
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Heat is uniformly generated at the rate of 2x 10W/m* in a wall of thermal conductivity...
Heat is uniformly generated at the rate of 2x 10W/m* in a wall of thermal conductivity 25 W/m-K and thickness 60 mm. The wall is exposed to convection on both sides, with different heat transfer coefficients and temperatures as shown. There are straight rectangular fins on the right-hand side of the wall, with dimensions as shown (L =20 mm) and thermal conductivity of 250 W/m-K. What is the maximum temperature that will occur in the wall? L tt-2 mm k=25...
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A large stainless steel (AISI 316) plate having a thickness of 5 mm is initially at a temperature of 70°C, and both sides of the plate are suddenly exposed to a convection environment at 20°C with the heat transfer coefficient of h= 800 W/m 2 oC. What will be the center and surface temperatures of the plate after 10 s? For stainless steel (AISI 316), α = 348x10-6 m2/s and k = 13.4 W/m K.
Consider a rectangular fin (k = 180 W/m-K) of length L =10 mm, thickness i =1 mm, and width w» t. The base temperature of the finis Ty = 150°C, and the finis exposed to a fluid of temperature T, =25°C. Assuming a uniform convection coefficient of h = 110 W/m2.K over the entire fin surface, determine the fin heat transfer rate per unit width 4; efficiency ng: effectiveness es, thermal resistance per unit width and the tip temperature T...
A pin fin of uniform, cross-sectional area is fabricated of an
aluminum alloy (k= 160 W/m·K). The fin diameter is D= 4 mm, and the
fin is exposed to convective conditions characterized by h= 220
W/m2·K. It is reported that the fin efficiency is ηf=
0.55. Determine (a) the fin length L and the fin
effectiveness ɛf. Account for tip convection.
L = ? mm
f
= ?
A 100-mm-thick steel (AISI 1010) plate, which is initially at a uniform temperature of 200°C needs to be heated to a minimum temperature of 550°C. Heating fired furnace with a temperature of 800°C and convection coefficient of 250 W/m2-K on both surfaces of the plate. Determine how long (minutes) the plate should be left in the furnace occurs in a gas-
A stainless steel block (H 0.1 m and k 16 W/(m K)) that is perfectly insulated on 5 of its 6 sides is floating in space (no convection heat transfer). It is exposed to irradiation, G, of 2500 W/m2. The block is generating heat uniformly where 4x 104 W/m2. The Stefan- Boltzmann constant, o, is 5.67 x 108 W/(m2-K4)·The emissivity of the exposed surface is 0.8. (25 Points) A) What is the exposed surface's temperature? B) What is the maximum...
Heat is uniformly generated at the rate of 2x 10W/m* in a wall of thermal conductivity 25 W/m-K and thickness 60 mm. The wall is exposed to convection on both sides, with different heat transfer coefficients and temperatures as shown. There are straight rectangular fins on the right-hand side of the wall, with dimensions as shown (L =20 mm) and thermal conductivity of 250 W/m-K. What is the maximum temperature that will occur in the wall? L tt-2 mm k=25...
A tube with length of 1 m is made from steel (k 15 W/m/K) having a square cross section with a circular hole through the center, as shown below Calculate the steady state temperature distribution across the cross section and the total rate of heat transfer if the inner surface is held at 20 °C, and the outer surface is held at 100 °C. How does the heat rate vary with grid resolution? Consider 9 and 17 grid points across...
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