Boiling_Handout_1_SOLUTIONS

# Boiling_Handout_1_SOLUTIONS - Boiling Hand-out 1 SOLUTIONS...

This preview shows pages 1–2. Sign up to view the full content.

Boiling Hand-out 1 SOLUTIONS– D. Schubring 1 Consider the following boiling water reactor case: Pitch = 16 mm (1) D rod = 12 . 5 mm (2) T sat = 250 C (3) T wall = 257 C (4) x e = x = 0 . 15 (5) G = 1800 kg m - 2 s - 1 (6) 1. Compute the pitch-to-diameter ratio, the ratio between equivalent round tube Nu and that in the rod bundle, and the hydraulic diameter of a sub-channel. Assume an inﬁnite rod array and use Equation 10-101b to compute ψ . P D = Pitch D rod (7) P D = 16 12 . 5 (8) P D = 1 . 28 (9) ψ = 1 . 826 P D - 1 . 043 (10) ψ = 1 . 826 × 1 . 28 - 1 . 043 (11) ψ = 1 . 294 (12) D h = 4 A Per w (13) D h = 4 ( Pitch 2 - π 4 D 2 rod ) πD rod (14) D h = 4 ( 16 2 - π 4 12 . 5 2 ) π 12 . 5 (15) D h = 13 . 59 mm = 0 . 01359 m (16) 2. Compute q 00 using the simple Thom correlation, further assuming that q 00 increases by the same factor ( ψ ) as does a heat transfer coeﬃcient. q

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

Boiling_Handout_1_SOLUTIONS - Boiling Hand-out 1 SOLUTIONS...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online