Page 361 - Mechanical Engineers' Handbook (Volume 4)

350 Heat Pipes

Groove No. 1 Groove No. 2

45 Groove No. 1
Temperature Drop (C) 30
40
Groove No. 2
35
25
20
15
10
5
0
0 10 20 30 40 50 60
Input Power (W)
Figure 8 Groove configuration effect on the temperature drops.

1200.00
rb=0.635 mm
1000.00
rb=0.10 mm
Dry-out Heat Flux (kW/m 2 ) 600.00
rb=0.01 mm
800.00

400.00

200.00

0.00
0.01 0.10 1.00 10.00
Wick Thickness (mm)
Figure 9 Particle size effect on the dryout heat flux (L 0.254 m; 43%; L H 0.01 m; working
fluid water).