Engineering, 13.03.2020 03:34, averyrogerss560

An oil bath maintained at 40°C with a convective coefficient 500 W/m2·K is used to quench stainless steel spherical ball bearings (25 W/m·K, 4.85 x 10-6 m2/s) in order to harden them. Consider a ball bearing of uniform temperature 850°C and a diameter of 30 mm. How long, in seconds, will it take for the surface temperature of the sphere to reach 100°C? What is the corresponding center temperature, in °C

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, jadeochoa4466

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Answers: 2

continue

Engineering, 04.07.2019 18:10, heidiburgos1own6c0

Fluids at rest possess no flow energy. a)- true b)- false

Answers: 3

continue

Engineering, 04.07.2019 18:20, myahlit84

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false

Answers: 3

continue

Engineering, 04.07.2019 18:20, aly95

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid

Answers: 3

continue

Do you know the correct answer?

An oil bath maintained at 40°C with a convective coefficient 500 W/m2·K is used to quench stainless...