3. The following data is related to a short brasscylinder of diameter D = 10 cm and height H = 20cm is initially at a uniform temperature of Ti =200°C. The cylinder is now placed in atmosphericair at 25°C, where heat transfer takes place byconvection with a heat transfer coefficient of h =60 W/m2°C. Calculate (a) the centertemperature of the cylinder, (b) the centertemperature of the top surface of the cylinder,and (c) the total heat transfer from the cylinder15 min after the start of the cooling.Properties The themal propertes of bras are given to be p=S8530k /m',C, =0.89 kJkg °C,k=110 Wm-°C, and a= 3.39 × 10 m² /s.

First of all we are having the properties of Brass at room temprature: k=110 W/m0C, density=8530…

3. The following data is related to a short brass cylinder of diameter D 10 cm and height H = 20 cm is initially at a uniform temperature of Ti = 200°C. The cylinder is now placed in atmospheric air at 25°C, where heat transfer takes place by %3D convection with a heat transfer coefficient of h = 60 W/m2 °C. Calculate (a) the temperature of the cylinder, (b) the center temperature of the top surface of the cylinder, and (c) the total heat transfer from the cylinder 15 min after the start of the cooling. center Properies The themal propeties o bas are given to be p=830 kg/m.C, = 0389 kJkg °C, k=110 Wm-°C, and a =3.39 × 10 m² /s.

3. The following data is related to a short brass cylinder of diameter D 10 cm and height H = 20 cm is initially at a uniform temperature of Ti = 200°C. The cylinder is now placed in atmospheric air at 25°C, where heat transfer takes place by %3D convection with a heat transfer coefficient of h = 60 W/m2 °C. Calculate (a) the temperature of the cylinder, (b) the center temperature of the top surface of the cylinder, and (c) the total heat transfer from the cylinder 15 min after the start of the cooling. center Properies The themal propeties o bas are given to be p=830 kg/m.C, = 0389 kJkg °C, k=110 Wm-°C, and a =3.39 × 10 m² /s.

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Temperature

Section: Chapter Questions

Problem 13P

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