HW1Problem01 - For the BWR operating parameters given below...

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Boiling Heat Transfer 22 1 For the BWR operating parameters given below, compute and plot: a) The clad surface temperature assuming the Jens-Lottes Correlation b) The clad surface temperature assuming the Thom Correlation c) The clad surface temperature assuming the Chen Correlation You can neglect the mixed boiling region and assume the transition point from single phase forced convection to nucleate boiling in the Jens-Lottes and Thom Correlations occurs at that point z b , such that m m b sat c b b z q T h z q z T 1 1 6 10 ) ( ) ( ) ( + = + ς i.e., the wall temperature is continuous at the transition point. In the Chen correlation, substitute the Weisman correlation for the Dittus-Boelter correlation in o h A . Discuss your results. BOILING WATER REACTOR PARAMETERS Channel Heat Input 350,000 Btu/hr Channel Mass Flux 1.42 x 10 6 lbm/hr-ft 2 Rod Pitch 0.640 inches Rod Diameter 0.493 inches Channel Pressure 1000 psia Channel Height 146 inches Inlet Temperature 532 F H z H H z H q z q ) - ( sin ) - ( = ) ( 0 π π
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