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7.24 Steel (AISI 1010) plates of thickness δ-6mm and length L 1 m on a side...
Problem 7.019 Steel (AISI 1010) plates of thickness δ 18 mm and length L-1 m on...
Problem 7.019 Steel (AISI 1010) plates of thickness δ 18 mm and length L-1 m on a side are conveyed from a heat treatment process and are concurrently cooled by atmospheric air of velocity u. 5 m/s and T.20°C in parallel flow over the plates. Conveyor For an initial plate temperature of Ti =300°C, what is the rate of heat transfer from the plate? what is the corresponding rate of change of the plate temperature? The velocity of the air...
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
1. You have a sheet of carbon steel with a thickness of 1 mm, a length...
1. You have a sheet of carbon steel with a thickness of 1 mm, a length of 300 mm, and width of 150 mm. You are testing it in a furnace that is flowing hot air over the sheet at 3 m/s at T 1 300 K along the length of the metal. The carbon steel is initially at 300k and has the following properties p 7850 R/ C 430 //kok, and R, 1490 W/mK. The carbon steel is sitting...
Problem 9.43 The 4 m x 4 m horizontal roof of an uninsulated aluminum melting furnace...
Problem 9.43 The 4 m x 4 m horizontal roof of an uninsulated aluminum melting furnace is comprised of a 0.08-m-thick fireclay brick refractory covered by a 5-mm-thick steel (AISI 1010) plate. The refractory surface exposed to the furnace gases is maintained at 1700 K during operation, while the outer surface of the steel is exposed to the air and walls of a large room at 25 0C. the emissivity of the steel is 0.3. (a) What is...
Consider a single stack of rectangular fins of length L and thickness t, with convection conditions...
Consider a single stack of rectangular fins of length L and thickness t, with convection conditions corresponding to h and To. The bottom plate is well-insulated and an adiabatic fin tip condition may be assumed (a) Obtain the expression for the fin heat transfer rate (b) In a specific application, a stack that is 200 mm wide and 100 mm deep contains 50 fins, each of length L - 12 mm. The base and fins are made from aluminum (k...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat tr...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat transfer coefficient, the convection heat transfer rate from the top of the plate, and the drag force on the plate for the following: (a) The Buid is water flowing at a velocity of 0.5 m/s. o) Water is flowing at a velocity of 2.5...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is maintained at a uniform surface temperature of T,-160°C by using independently controlled, heat-generating rectangular modules of thickness a 10 mm and length b 50 mm. Each module is insulated from its neighbors, as well as on its back side. Atmospheric air at 25°C flows over the plate at a velocity of 30 m/s. The thermophysical properties of the module are k5.2 W/m K, cp...
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...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
Problem 7.019 Steel (AISI 1010) plates of thickness δ 18 mm and length L-1 m on a side are conveyed from a heat treatment process and are concurrently cooled by atmospheric air of velocity u. 5 m/s and T.20°C in parallel flow over the plates. Conveyor For an initial plate temperature of Ti =300°C, what is the rate of heat transfer from the plate? what is the corresponding rate of change of the plate temperature? The velocity of the air...
1. You have a sheet of carbon steel with a thickness of 1 mm, a length of 300 mm, and width of 150 mm. You are testing it in a furnace that is flowing hot air over the sheet at 3 m/s at T 1 300 K along the length of the metal. The carbon steel is initially at 300k and has the following properties p 7850 R/ C 430 //kok, and R, 1490 W/mK. The carbon steel is sitting...
Consider a single stack of rectangular fins of length L and thickness t, with convection conditions corresponding to h and To. The bottom plate is well-insulated and an adiabatic fin tip condition may be assumed (a) Obtain the expression for the fin heat transfer rate (b) In a specific application, a stack that is 200 mm wide and 100 mm deep contains 50 fins, each of length L - 12 mm. The base and fins are made from aluminum (k...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat transfer coefficient, the convection heat transfer rate from the top of the plate, and the drag force on the plate for the following: (a) The Buid is water flowing at a velocity of 0.5 m/s. o) Water is flowing at a velocity of 2.5...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is maintained at a uniform surface temperature of T,-160°C by using independently controlled, heat-generating rectangular modules of thickness a 10 mm and length b 50 mm. Each module is insulated from its neighbors, as well as on its back side. Atmospheric air at 25°C flows over the plate at a velocity of 30 m/s. The thermophysical properties of the module are k5.2 W/m K, cp...
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...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
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