How thick a steel wall will provide the same insulation
A piece of steel has a conductivity of k= 15 W/mK, and a brick has k=1W/mK. How thick a steel wall will provide the same insulation as a 10cm-thick brick?
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Two kilograms of zinc at 500C and 1 atmosphere is contained in a thermally insulated jacket. The system is compressed reversibly to a pressure of 15,000 atmosheres. Calculate the temperature change in the process.
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Low-velocity steam (with negligible kinetic energy) enters an adiabatic nozzle at 300 C and 3 MPa. the steam leaves the nozzle at 2 MPa with a velocity of 400 m/s. the mass flow rate is 0.4 kg/s.
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