What is the critical thickness of insulation for hollow cylinder?
A. a thickness of insulation at which heat transfer rate from cylinder is minimum
B. a thickness of insulation at which heat transfer rate from cylinder is maximum
C. a thickness of insulation at which heat transfer from cylinder does not change with change in outside temperature
D. none of the above
Answer:B
What is the critical thickness of insulation for hollow cylinder?
A. a thickness of insulation at which heat transfer rate from cylinder is minimum B. a thickness of insulation at which heat transfer rate from cylinder is maximum C. a thickness of insulation at which heat transfer from cylinder does not change with change in outside temperature D. none of the above