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

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

McqOptions · Accepted Answer

1.308 * 10 6 W/m2

McqOptions · Answer

nH = 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

McqOptions · Answer

1.308 * 10 8 W/m2

McqOptions · Answer

1.308 * 10 7 W/m2

McqOptions · Answer

1.308 * 10 5 W/m2

1.	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
A.	nH = 1.54 (Q/A) <sup>0.75</sup> = 5.58 (d t)<sup> 3</sup> W/m<sup>2 </sup>K where Q/A is the heat flux rate in W/m<sup>2</sup> and d t is the temperature difference between surface and saturation
B.	1.308 * 10 <sup>8 </sup>W/m<sup>2</sup>
C.	1.308 * 10 <sup>7 </sup>W/m<sup>2</sup>
D.	1.308 * 10 <sup>6 </sup>W/m<sup>2</sup>
E.	1.308 * 10 <sup>5 </sup>W/m<sup>2</sup>
Answer» D. 1.308 * 10 <sup>6 </sup>W/m<sup>2</sup>

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