Find the time required to cool the center

Assignment Help Mechanical Engineering

Reference no: EM131467383

Question: A cylindrical mild steel billet, 3 cm OD by 10 cm long, initially at 500 °C, is plunged into a large container filled with oil at 100 °C. The average heat transfer coefficient between the steel and oil is 500 W/m2 ·K. Find the time required to cool

(a) the center and

(b) the surface of the billet to 250 °C. Assume that

(i) the billet is lumped,

(ii) the billet is not lumped, and

(iii) the billet is very long.

Comment on the comparison of these results.

Reference no: EM131467383

Questions Cloud

Overall context of information system development : How does the databse development fit into the overall context of information system development?

Diversity training programs to ensure that employees realize : Your company provides diversity training programs to ensure that employees realize the importance of working with a diverse workforce,

Determine the temperature at the midplane after five second : A large steel plate (with a thermal diffusivity of 1.3 × 10-5 m2/s and a thermal conductivity of 40 W/m·K) is 3 cm thick. At zero time it begins to receive heat

Describe what would be three consequences : Describe what would be three consequences if the U.S. government mandated that domestic autos

Find the time required to cool the center : A cylindrical mild steel billet, 3 cm OD by 10 cm long, initially at 500 °C, is plunged into a large container filled with oil at 100 °C.

Write pages on program design tools : Read the sections and flowcharts from Chapter 11 of your text that explain program design and the planning tools. Write 1-2 pages on program design tools.

Networks use linux-based systems : Based on all you have learned so far in this course, why do you suppose so many networks use Linux-based systems?

What is its effective capacity : What design capacity would be needed to achieve an actual output of 16 jobs per week? What is its effective capacity?

Unusual naming conventions : You may have noticed by now that Linux has a lot of unusual naming conventions. Some processes and features have names inspired by historical or literary.

User Account

All Pages