5.2.2 Pressure drop aluminium heat sink with stainless steel tubes
• Thecurvecharacteristicdescribedbelowisvalidfor25°CowtemperatureandAntifrogen
N 52 %.
• Iftherearehigherowtemperatures,thepressuredropinthesystemdecreases.
• This also applies to cooling medium such as water or another glycol mixture.
• A glycol mixture from Clariant in a ratio of 52 % or 33 % is recommended.
Pressure drop in bar
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
0 2 4 6 8 10 12 14 16 18 20 22 24 26 2
Volumeowinl/min
Legend
Recommended working range: 10...20 l/min
Figure 13: Pressure drop of the heat sink as a function of the volume ow (stainless steel cooler)
ATTENTION
Only parallel connection of the coolant circuit is permissible for alumini-
um heat sinks with stainless steel tubes.
60
OPERATION OF LIQUID-COOLED DEVICES