Thermodynamics HW Solutions 583

Thermodynamics HW Solutions 583 - 100 W 6559 W 399 100...

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Chapter 7 External Forced Convection [] W 1159 ) K 273 25 ( ) K 273 75 ( ) .K W/m 10 )(5.67 m (3.77 ) 8 . 0 ( ) ( 4 4 4 4 2 -8 2 4 4 = + + × = = surr s s rad T T A Q σε W 6160 1159 5001 = + = + = rad conv total Q Q Q which is 6559 - 6160 = 399 W less than the value for a surrounding temperature of 0 ° C. This corresponds to 6.1% = × = × =
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Unformatted text preview: 100 W 6559 W 399 100 %change C total,0 difference Q Q & & (decrease) Therefore, the effect of the temperature variations of the surrounding surfaces on the total heat transfer is less than 6%. 7-38...
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This note was uploaded on 01/22/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.

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