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.

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 0.10 cm diameter and 15 cm long wire has been laid horizontally and

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.
A.
B.	<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
C.	1.308 * 10 <sup>8 </sup>W/m<sup>2</sup>
Answer» D.

Discussion

No Comment Found

Related MCQs

A 1.0 mm diameter and 300 mm long nickel wire is submerged horizontal in water at atmospheric pressure. At burnout, the wire has a current of 195 A. Calculate the voltage at burnout. The relevant thermos-physical properties arep f (fluid) = 959.52 kg/m3p g (vapor) = 0.597 kg/m3h f g = 2257000 J/kgσ = 0.0533 N/m
Estimate the peak heat flux for water boiling at normal atmospheric pressure. The relevant thermo-physical properties arep f (liquid) = 958.45 kg/m3p g (vapor) = 0.61 kg/m3h f g = 2.25 * 10 6 J/kgσ = 0.0585 N/m
Natural convection heat transfer coefficients over surface of a vertical pipe and a vertical flat plate for same height. What is/are the possible reasons for this?(i) Same height(ii) Both vertical(iii) Same fluid(iv) Same fluid flow patternSelect the correct answer
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 surfaceH = 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
Fritz criterion is given bya) h = 1.973 (Q/A) 0.45b) h = 1.973 (Q/A) 0.55c) h = 1.973 (Q/A) 0.65d) h = 1.973 (Q/
A_1.0_mm_diameter_and_300_mm_long_nickel_wire_is_submerged_horizontal_in_water_at_atmospheric_pressure._At_burnout,_the_wire_has_a_current_of_195_A._Calculate_the_voltage_at_burnout._The_relevant_thermos-physical_properties_are$
Identify the wrong statement with respect to boiling heat transfer?
In nucleate pool boiling, the heat flux depends on
The heat flux in nucleate boiling varies in accordance with
Natural convection heat transfer coefficients over surface of a vertical pipe and a vertical flat plate for same height. What is/are the possible reasons for this?

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.

Discussion

No Comment Found

Related MCQs

Reply to Comment