Question

A 1% carbon steel sphere 20 cm in diameter is kept at 250°c on the outside. it has an 8 cm diameter cavity containing boiling water h inside is very high which is vented to the atmosphere. what is q through the shell?

Answer 1

A 10 cm diameter copper ball is to be heated from 100 Celsius to 150 Celsius in30 the plate in the example is made of carbon steel 2 cm thick 400 w is lost