Problem 2 (20 Points) Fin analysis 2. A chromel-alumel thermocouple is place between two insulating walls as shown in th

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Problem 2 20 Points Fin Analysis 2 A Chromel Alumel Thermocouple Is Place Between Two Insulating Walls As Shown In Th 1 (46.69 KiB) Viewed 30 times

Problem 2 (20 Points) Fin analysis 2. A chromel-alumel thermocouple is place between two insulating walls as shown in the figure below. The temperature of the air stream that passes the thermocouple is 500 K and the heat transfer coefficient between the wires and the air is 3 W/m² K. In steady state, the temperature of the thermocouple wires at the walls is 300 K. The wires have a diameter of 1 mm. L₁= L₂= 0.025 m. Please determine the temperature measured by the thermocouple (at junction). Kchromel = 17 W/m K and Kalumel = 48 W/m K. Assume that a chromel-alumel thermocouple can be modeled as two fins. T = 300 K Air flow Chromel L₂ h=3 W/m² K Tair = 500 K Alumel T = 300 K Thermocouple