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1. |
What is the value of the fluid side heat transfer coefficient when air flows over cold pipes by natural convection? |
A. | 0.2 (T<sub>a</sub> T<sub>m</sub> / D)<sup>1/4</sup> |
B. | 0.2 (T<sub>a</sub> T<sub>m</sub> / D) |
C. | 0.2 (T<sub>a</sub> T<sub>m</sub> / D)<sup>1/3</sup> |
D. | 0.2 (T<sub>a</sub> T<sub>m</sub> / D)<sup>1/2</sup> |
Answer» B. 0.2 (T<sub>a</sub> T<sub>m</sub> / D) | |