Question

A 0.10 cm diameter and 15 cm long wire has been laid horizontally and submerged in water at atmospheric pressure. The wire has a steady state voltage drop of 14.5 V and a current of 42.5 A. Determine the heat flux of the wire.
The following equation applies for water boiling on a horizontal submerged surface

H = 1.54 (Q/A)^0.75 = 5.58 (d t)³ W/m² K

where Q/A is the heat flux rate in W/m² and d t is the temperature difference between surface and saturation.

a.

1.308 * 10⁸ W/m²

b.

1.308 * 10⁷ W/m²

c.

1.308 * 10⁶ W/m²

d.

1.308 * 10⁵ W/m²

Answer: (c).1.308 * 10⁶ W/m²

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Q. A 0.10 cm diameter and 15 cm long wire has been laid horizontally and submerged in water at atmospheric pressure. The wire has a steady state voltage drop of 14.5 V and a current...

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