Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > HR Management Posted 05 Oct 2017 My Price 6.00

metallic cylinder

EXAMPLE 7.4

 

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 Ts = 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

 

 

Heated cylinder

 

 

Insulated endpiece

 

Thermocouple leads

 

 

 

 

 

 

 

 

Wind tunnel

 

 

 

 

Power leads

to electrical heater

 

 

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.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 05 Oct 2017 01:10 PM My Price 6.00

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