A 20 m metal pipe, with a thermal conductivity of 60 W/(m. K), is carrying pasteurised orange juice with a temperature of 80 °C. The pipe has an inside diameter of 90 mm and a wall thickness of 10 mm. To keep the orange juice at as high a temperature as possible, a 45 mm thick layer of fibreglass insulation is added to the pipe. This fibreglass has a thermal conductivity of 0.02 W/(m. K). If the the temperature outside the pipe is 15 °C, how much heat will be lost from the pipe? Assume that the conditions are steady-state. What is the resistance to heat flow in the metal pipe?: What is the resistance to heat flow in the fibreglass insulation?: What is the overall rate of heat flow from this insulated pipe? K/W W K/W
A 20 m metal pipe, with a thermal conductivity of 60 W/(m. K), is carrying pasteurised orange juice with a temperature of 80 °C. The pipe has an inside diameter of 90 mm and a wall thickness of 10 mm. To keep the orange juice at as high a temperature as possible, a 45 mm thick layer of fibreglass insulation is added to the pipe. This fibreglass has a thermal conductivity of 0.02 W/(m. K). If the the temperature outside the pipe is 15 °C, how much heat will be lost from the pipe? Assume that the conditions are steady-state. What is the resistance to heat flow in the metal pipe?: What is the resistance to heat flow in the fibreglass insulation?: What is the overall rate of heat flow from this insulated pipe? K/W W K/W
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![A 20 m metal pipe, with a thermal conductivity of 60 W/(m. K), is carrying pasteurised orange juice
with a temperature of 80 °C. The pipe has an inside diameter of 90 mm and a wall thickness of 10
mm.
To keep the orange juice at as high a temperature as possible, a 45 mm thick layer of fibreglass
insulation is added to the pipe. This fibreglass has a thermal conductivity of 0.02 W/(m. K).
If the the temperature outside the pipe is 15 °C, how much heat will be lost from the pipe? Assume
that the conditions are steady-state.
What is the resistance to heat flow in the metal pipe?:
What is the resistance to heat flow in the fibreglass insulation?:
What is the overall rate of heat flow from this insulated pipe?
KIW
W
K/W](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9c4ecb0a-dc99-42e0-9a14-3a2a72b822cb%2Ff45bcd95-a81a-480c-8d3e-262bb58a9b89%2Fo29rr6w_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 20 m metal pipe, with a thermal conductivity of 60 W/(m. K), is carrying pasteurised orange juice
with a temperature of 80 °C. The pipe has an inside diameter of 90 mm and a wall thickness of 10
mm.
To keep the orange juice at as high a temperature as possible, a 45 mm thick layer of fibreglass
insulation is added to the pipe. This fibreglass has a thermal conductivity of 0.02 W/(m. K).
If the the temperature outside the pipe is 15 °C, how much heat will be lost from the pipe? Assume
that the conditions are steady-state.
What is the resistance to heat flow in the metal pipe?:
What is the resistance to heat flow in the fibreglass insulation?:
What is the overall rate of heat flow from this insulated pipe?
KIW
W
K/W
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