3 At the speed of... heat? Six points An engineer is shopping for a temperature sensor with a certain response time. One

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3 At The Speed Of Heat Six Points An Engineer Is Shopping For A Temperature Sensor With A Certain Response Time One 1 (291.92 KiB) Viewed 12 times

3 At the speed of... heat? Six points An engineer is shopping for a temperature sensor with a certain response time. One temperature probe is shaped like a cylinder of some unknown diameter and a length of 10 cm. The probe is made of chromel, with properties listed in the table below. The temperature probe is advertised as having a response time constant of 0.5s. The engineer plans to use the probe in a system with h = 565 W m-K-1 The volume of a cylinder is V = xdL/4 and the surface area is L. Determine the diameter of the probe. Is it reasonable to assume the probe will be at uniform temperature across its cross-section? Chromel T = 0.58 L=10cm h=565 w/mk Property Value Density.p 8500 kg m- Specific heat, 440 5 kg-'K- Thermal conductivity, k 19 W m-'-!