An electrical wire with a length of 5-m and 3.5-mm-Ø spreads over one room at 18°C. Heat is generated in the wire due to resistance heating with a convection heat transfer coefficient of 23 W/m2-K between the outer surface of the wire and the air in the room. The voltage drop and electric current through the wire are measured to be 60 V and 2 A, respectively. Disregarding any heat transfer by radiation, determine the surface temperature of the wire (°C). Surface Temp. of Wire (°C)
An electrical wire with a length of 5-m and 3.5-mm-Ø spreads over one room at 18°C. Heat is generated in the wire due to resistance heating with a convection heat transfer coefficient of 23 W/m2-K between the outer surface of the wire and the air in the room. The voltage drop and electric current through the wire are measured to be 60 V and 2 A, respectively. Disregarding any heat transfer by radiation, determine the surface temperature of the wire (°C). Surface Temp. of Wire (°C)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An electrical wire with a length of 5-m and 3.5-mm-Ø spreads over one room at 18°C. Heat is generated in the wire due to resistance heating with a convection heat transfer coefficient of 23 W/m2-K between the outer surface of the wire and the air in the room. The voltage drop and electric current through the wire are measured to be 60 V and 2 A, respectively. Disregarding any heat transfer by radiation, determine the surface temperature of the wire (°C).
Surface Temp. of Wire (°C) =
Transcribed Image Text:An electrical wire with a length of 5-m and 3.5-mm-Ø spreads over
one room at 18°C. Heat is generated in the wire due to resistance
heating with a convection heat transfer coefficient of 23 W/m2-K
between the outer surface of the wire and the air in the room. The
voltage drop and electric current through the wire are measured to
be 60 V and 2 A, respectively. Disregarding any heat transfer by
radiation, determine the surface temperature of the wire (°C).
Surface Temp. of Wire (°C) =|
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