Estimate the time constant for such a thermometer neglect

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Reference no: EM13622744

A fluid-expansion thermometer uses liquid Freon (C = 0.22 Btu/lbm middot F, rho = 85.2 lbm/ft3) enclosed in a 0.25-in-ID copper (C = 0.092, rho = 560) cylinder with a wall thickness of 0.032 in. The thermometer is exposed to a cross flow of air at 400degreeF, 15 psia, and 20 ft/s. Estimate the time constant for such a thermometer. Neglect all effects of the capillary tube. Repeat for a cross flow of liquid water at 180degreeF and 20 ft/s. Recalculate the time constant for both of these situations for a stainless-steel bulb (C = 0.11, rho = 490).

Reference no: EM13622744

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