HW3Prob4 - Determine the pressure drop across the steam...

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Single Phase 16 1 Determine the pressure drop across the steam generator illustrated below. You may assume flush inlet loss coefficients from the inlet chamber to the steam generator tubes, and from the outlet chamber to the cold legs. You may assume flush outlet loss coefficients from the hot leg exit to the inlet plenum and from the steam generator tubes to the outlet plenum. Hot Leg (1) Cold Leg (2) Tube Bundle Inlet Plenum Outlet Plenum Problem Data Hot Leg Diameter 42 inches Cold Leg Diameter (each) 30 inches Number of steam generator tubes 12580 Average tube length 63.9 ft Tube ID 2/3 inch Average fluid temperature 586 F System pressure 2250 psia Primary side flow rate 82.9 x 10 6 lbm/hr K flush inlet 0.5 K flush outlet 1.0 K 90 ° 0.82 SOLUTION Steam Generator Pressure Drop Δ P K v g K v g fL D v g K v g K v g K v g K v g K fL D K K v g K v g K G g K fL D K K SG ex HL c in SG c SG c SG c ex SG c in CL c ex HL c in ex SG c in CL c ex HL c in ex K SG = + + + + + = + + + + + = + + + + ρ ρ ρ ρ ρ ρ ρ ρ ρ ρ 2 2 2 90 2 2 2 2 90 2 2 2 90 2 2 2 2 2 2 2 2 2 2 2 2 2 ( ) ( ) ( ) ~ ± ² ³ ³³³ ´ ³³³³³ G g K G g SG c in CL c 2 2 2 2 ρ ρ +
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Single Phase 16 2 Flow Areas A D ft HL HL = = = π π 2 2 2 4 42 12
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