Experiments have been conducted on a metallic cylinder 12.7 mm in diameter and 94 mmlong. The cylinder is heated internally by an electrical heater and is subjected to a crossflow of air in a low-speed wind tunnel. Under a specific set of operating conditions forwhich the upstream air velocity and temperature were maintained at V = 10 m/s and26.2°C, respectively, the heater power dissipation was measured to be P = 46 W, while theaverage cylinder surface temperature was determined to be T, = 128.4°C. It is estimatedthat 15% of the power dissipation is lost through the cumulative effect of surface radiationand conduction through the endpieces.Thermocouple for measuringairstream temperaturePitot tube fordetermining velocityWindtunnelPower leadsto electrical heaterHeatedcylinderInsulatedendpieceThermocoupleleads1. Determine the convection heat transfer coefficient from the experimental observations.2. Compare the experimental result with the convection coefficient computed from anappropriate correlation.

The average surface temperature is Ts=128.4°C The temperature of the air is Ta=26.2°C The velocity…

Experiments have been conducted on a metallic cylinder 12.7 mm in diameter and 94 mm long. The cylinder is heated internally by an electrical heater and is subjected to a cross flow of air in a low-speed wind tunnel. Under a specific set of operating conditions for which the upstream air velocity and temperature were maintained at V = 10 m/s and 26.2°C, respectively, the heater power dissipation was measured to be P = 46 W, while the average cylinder surface temperature was determined to be T, that 15% of the power dissipation is lost through the cumulative and conduction through the endpieces. 1 128.4°C. It is estimated effect of surface radiation Thermocouple for measuring airstream temperature Pitot tube for determining velocity -Wind tunnel Power leads to electrical heater Heated cylinder Insulated endpiece Thermocouple leads 1. Determine the convection heat transfer coefficient from the experimental observations. 2. Compare the experimental result with the convection coefficient computed from an appropriate correlation.

Experiments have been conducted on a metallic cylinder 12.7 mm in diameter and 94 mm long. The cylinder is heated internally by an electrical heater and is subjected to a cross flow of air in a low-speed wind tunnel. Under a specific set of operating conditions for which the upstream air velocity and temperature were maintained at V = 10 m/s and 26.2°C, respectively, the heater power dissipation was measured to be P = 46 W, while the average cylinder surface temperature was determined to be T, that 15% of the power dissipation is lost through the cumulative and conduction through the endpieces. 1 128.4°C. It is estimated effect of surface radiation Thermocouple for measuring airstream temperature Pitot tube for determining velocity -Wind tunnel Power leads to electrical heater Heated cylinder Insulated endpiece Thermocouple leads 1. Determine the convection heat transfer coefficient from the experimental observations. 2. Compare the experimental result with the convection coefficient computed from an appropriate correlation.

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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Question

Experiments have been conducted on a metallic cylinder 12.7 mm in diameter and 94 mm
long. The cylinder is heated internally by an electrical heater and is subjected to a cross
flow of air in a low-speed wind tunnel. Under a specific set of operating conditions for
which the upstream air velocity and temperature were maintained at V = 10 m/s and
26.2°C, respectively, the heater power dissipation was measured to be P = 46 W, while the
average cylinder surface temperature was determined to be T, = 128.4°C. It is estimated
that 15% of the power dissipation is lost through the cumulative effect of surface radiation
and conduction through the endpieces.
Thermocouple for measuring
airstream temperature
Pitot tube for
determining velocity
Wind
tunnel
Power leads
to electrical heater
Heated
cylinder
Insulated
endpiece
Thermocouple
leads
1. Determine the convection heat transfer coefficient from the experimental observations.
2. Compare the experimental result with the convection coefficient computed from an
appropriate correlation.

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