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A steel pipe with k of 19 W/m-°C has 2 cm inner diameter and 4 cm outer diameter. It is covered with 3 cm insulation whose thermal conductivity is 0.2 W/m-°C. The inside wall is 600 °C, outside the insulation the temperature is 100 °C. What is da/dt per unit length of pipe? What is the temperature at the pipe-insulation point? (3 marks)

A steel pipe with k of 19 W/m-°C has 2 cm inner diameter and 4 cm outer diameter. It is covered with 3 cm insulation whose thermal conductivity is 0.2 W/m-°C. The inside wall is 600 °C, outside the insulation the temperature is 100 °C. What is da/dt per unit length of pipe? What is the temperature at the pipe-insulation point? (3 marks)

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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A steel pipe with k of 19 W/m-°C has 2 cm inner diameter and 4 cm outer diameter. It is covered with 3 cm insulation whose thermal conductivity is 0.2 W/m-°C. The inside wall is 600 °C, outside the insulation the temperature is 100 °C. What is da/dt per unit length of pipe? What is the temperature at the pipe-insulation point? (3 marks)
Transcribed Image Text:A steel pipe with k of 19 W/m-°C has 2 cm inner diameter and 4 cm outer diameter. It is covered with 3 cm insulation whose thermal conductivity is 0.2 W/m-°C. The inside wall is 600 °C, outside the insulation the temperature is 100 °C. What is da/dt per unit length of pipe? What is the temperature at the pipe-insulation point? (3 marks)
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