What statement is true concerning heat transfer rates by the heat transfer mode of natural convection? |
A) Heat transfer rates are directly proportional to the difference in fluid densities which, in turn, is directly proportional to the temperature gradient. |
B) Heat transfer rates are inversely proportional to the difference in fluid densities which, in turn, is directly proportional to the temperature gradient. |
C) Heat transfer rates are directly proportional to the difference in fluid densities which, in turn, is inversely proportional to the temperature gradient. |
D) Heat transfer rates are inversely proportional to the difference in fluid densities which, in turn, is inversely proportional to the temperature gradient. |