Homework Answers
Ans c) 5000 W/m2 d) 1.5306 W/mK
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Problem 1: (10 points) The composite wall of an oven consists of three materials, two of...
The composite wall of an oven consists of threematerials, two of which are of known thermal...
The composite wall of an oven consists of threematerials, two
of which are of known thermal conductivity,kA =
20 W/m•K and kC =50 W/(m•K), and known
thickness, LA =0.30m and LC
= 0.15m. The third material,B, which is sandwiched between
materials A andC, is known thickness,
LB = 0.15m, butunknown thermal conductivity
kB.
Under steady-state operating conditions,
measurementsreveal an outer surface temperature of
Ts,o =20ºC, an inner surface temperature of
Ts,i= 600ºC, and an oven air temperature
ofT¥=800ºC. The
inside...
• A wall of an industrial oven consists of three different materials, as depicted in Figure....
• A wall of an industrial oven consists of three different materials, as depicted in Figure. • The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m.K. • The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m.°C). • The exterior consists of 10-cm common brick with a thermal conductivity of 0.72 W/mK (W/m °C). • The...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure....
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m²K(W/m² °C) and the outside air is...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure....
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m² K (W/m² °C) and the outside...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure....
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/ mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m² K (W/m2 °C) and the...
III. A composite walled window separates oven cavity from room air. The composite is to consist...
III. A composite walled window separates oven cavity from room air. The composite is to consist of two high temperature plastics of thickness L. = 2L. and thermal conductivities k = 0.15 W/(m·K) and k, = 0.08 W/( m K). During the self-cleaning process, the oven w and oven air temperatures are at 400°C, while the room air temperature is at 25°C. The insid convection coefficient, outside convection coefficient, and radiation heat transfer coefficient to be confused with Stefan Boltzmann...
PLEASE WRITE/PRINT CLEARLY PLEASE SOLVE USING THE FINITE ELEMENT WHICH INCLUDES THE MATRIXES 1. A wall...
PLEASE WRITE/PRINT CLEARLY PLEASE SOLVE USING THE FINITE ELEMENT
WHICH INCLUDES THE MATRIXES
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C...
A plane wall is composed of two materials. Material A has a uniform heat generation of...
A plane wall is composed of two materials. Material A has a uniform heat generation of 100 kW/m3, a thermal conductivity of 50 W/mK, and a thickness of 10 cm. The inner surface of material A is well insulated. The other surface of material A is connected to Material B which has no generation with a thermal conductivity of 100 W/mK and a thickness of 20 cm. The outer surface of material B is cooled by ambient air at 300...
PLEASE WRITE/PRINT CEARLY AND SOLVE USING THE FINITE ELEMENT METHOD WHICH INCLUDE MATRICIES 1. A wall...
PLEASE WRITE/PRINT CEARLY AND SOLVE USING THE FINITE ELEMENT
METHOD WHICH INCLUDE MATRICIES
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C...
Figure Q2(b) shows the composite wall of a freezing plant which consists of a 10 cm...
Figure Q2(b) shows the composite wall of a freezing
plant which consists of a 10 cm layer of corkboard on the inside
and 14 cm layer of concrete on the outside, with an area of 1 m2.
The temperature on the inside corkboard surface is -20 °C, and the
temperature on the outside concrete surface is 24 °C. The thermal
conductivity for corkboard is 0.04 W/m.K and for concrete is 0.8
W/m.K.
Calculate the temperature of the interface between the...
The composite wall of an oven consists of threematerials, two
of which are of known thermal conductivity,kA =
20 W/m•K and kC =50 W/(m•K), and known
thickness, LA =0.30m and LC
= 0.15m. The third material,B, which is sandwiched between
materials A andC, is known thickness,
LB = 0.15m, butunknown thermal conductivity
kB.
Under steady-state operating conditions,
measurementsreveal an outer surface temperature of
Ts,o =20ºC, an inner surface temperature of
Ts,i= 600ºC, and an oven air temperature
ofT¥=800ºC. The
inside...
• A wall of an industrial oven consists of three different materials, as depicted in Figure. • The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m.K. • The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m.°C). • The exterior consists of 10-cm common brick with a thermal conductivity of 0.72 W/mK (W/m °C). • The...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m²K(W/m² °C) and the outside air is...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m² K (W/m² °C) and the outside...
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/ mK (W/m °C). The inside oven air is 400°C with a convection coefficient of 100 W/m² K (W/m2 °C) and the...
III. A composite walled window separates oven cavity from room air. The composite is to consist of two high temperature plastics of thickness L. = 2L. and thermal conductivities k = 0.15 W/(m·K) and k, = 0.08 W/( m K). During the self-cleaning process, the oven w and oven air temperatures are at 400°C, while the room air temperature is at 25°C. The insid convection coefficient, outside convection coefficient, and radiation heat transfer coefficient to be confused with Stefan Boltzmann...
PLEASE WRITE/PRINT CLEARLY PLEASE SOLVE USING THE FINITE ELEMENT
WHICH INCLUDES THE MATRIXES
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C...
A plane wall is composed of two materials. Material A has a uniform heat generation of 100 kW/m3, a thermal conductivity of 50 W/mK, and a thickness of 10 cm. The inner surface of material A is well insulated. The other surface of material A is connected to Material B which has no generation with a thermal conductivity of 100 W/mK and a thickness of 20 cm. The outer surface of material B is cooled by ambient air at 300...
PLEASE WRITE/PRINT CEARLY AND SOLVE USING THE FINITE ELEMENT
METHOD WHICH INCLUDE MATRICIES
1. A wall of an industrial oven consists of two different materials, as depicted in Figure. The first layer is composed of 5 cm of insulating cement with a clay binder that has a thermal conductivity of 0.08 W/m K. The second layer is made from 15 cm of 6-ply asbestos board with a thermal conductivity of 0.074 W/mK (W/m °C). The inside oven air is 400°C...
Figure Q2(b) shows the composite wall of a freezing
plant which consists of a 10 cm layer of corkboard on the inside
and 14 cm layer of concrete on the outside, with an area of 1 m2.
The temperature on the inside corkboard surface is -20 °C, and the
temperature on the outside concrete surface is 24 °C. The thermal
conductivity for corkboard is 0.04 W/m.K and for concrete is 0.8
W/m.K.
Calculate the temperature of the interface between the...
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