Saved Bookmarks
| 1. |
The thermal conductivity of a wire has a 4 mm diameter with 3 mm thickness is0.11 W/mK and the convective heat transfer coefficient between the insulating surface andair is 25 W/m².K . Calculate the percentage of change in the heat transfer rate if the criticalradius is used.(A) 0.45%(B) 0.75%(C) 0.55%(D) 0.85% |
| Answer» | |