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Inconel® refers to a class of nickel-chromium-based superalloys that are used in high-temperature applications, such as gas turbine blades. For further improvement in the performance of gas turbine engines, the outer blade surface is coated with ceramic-based thermal barrier coating (TBC). A flat Inconel plate with a thickness of 12 mm is coated with a layer of TBC with a thickness of 300 μm on its surface. At the interface between the Inconel® and the TBC, the thermal contact conductance is 3500 W/m2K. The thermal conductivities of the Inconel and the TBC are 25 W/m-K and 1.5 W/m-K, respectively. The plate is in a surrounding of hot combustion gasses at 1500°C, and the convection heat transfer coefficient is 750 W/m2K. Determine the temperature at the mid-plane of the Inconel plate if the outer surface temperature is 1175°C. The temperature is °C.

Inconel® refers to a class of nickel-chromium-based superalloys that are used in high-temperature applications, such as gas turbine blades. For further improvement in the performance of gas turbine engines, the outer blade surface is coated with ceramic-based thermal barrier coating (TBC). A flat Inconel plate with a thickness of 12 mm is coated with a layer of TBC with a thickness of 300 μm on its surface. At the interface between the Inconel® and the TBC, the thermal contact conductance is 3500 W/m2K. The thermal conductivities of the Inconel and the TBC are 25 W/m-K and 1.5 W/m-K, respectively. The plate is in a surrounding of hot combustion gasses at 1500°C, and the convection heat transfer coefficient is 750 W/m2K. Determine the temperature at the mid-plane of the Inconel plate if the outer surface temperature is 1175°C. The temperature is °C.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Inconel® refers to a class of nickel-chromium-based superalloys that are used in high-temperature applications, such as gas turbine blades. For further improvement in the performance of gas turbine engines, the outer blade surface is coated with ceramic-based thermal barrier coating (TBC). A flat Inconel plate with a thickness of 12 mm is coated with a layer of TBC with a thickness of 300 μm on its surface. At the interface between the Inconel® and the TBC, the thermal contact conductance is 3500 W/m2K. The thermal conductivities of the Inconel and the TBC are 25 W/m-K and 1.5 W/m-K, respectively. The plate is in a surrounding of hot combustion gasses at 1500°C, and the convection heat transfer coefficient is 750 W/m2K. Determine the temperature at the mid-plane of the Inconel plate if the outer surface temperature is 1175°C. The temperature is °C.
Transcribed Image Text:Inconel® refers to a class of nickel-chromium-based superalloys that are used in high-temperature applications, such as gas turbine blades. For further improvement in the performance of gas turbine engines, the outer blade surface is coated with ceramic-based thermal barrier coating (TBC). A flat Inconel plate with a thickness of 12 mm is coated with a layer of TBC with a thickness of 300 μm on its surface. At the interface between the Inconel® and the TBC, the thermal contact conductance is 3500 W/m2K. The thermal conductivities of the Inconel and the TBC are 25 W/m-K and 1.5 W/m-K, respectively. The plate is in a surrounding of hot combustion gasses at 1500°C, and the convection heat transfer coefficient is 750 W/m2K. Determine the temperature at the mid-plane of the Inconel plate if the outer surface temperature is 1175°C. The temperature is °C.
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