AQUADUCT CONTROL UNIT
- 30 -
Aqua Computer GmbH & Co. KG
© 2008-2009
Gelliehäuser Str. 1, 37130 Gleichen, Germany
14.9.
14.9.
14.9.
14.9. Off Time
Off Time
Off Time
Off Time 2
2
2
2
Enter a second time as described in 14.7. Off Time 1.
14.10.
14.10.
14.10.
14.10. Back
Back
Back
Back
Leaves the submenu and returns to "Settings".
15. Menu
15. Menu
15. Menu
15. Menu „
„
„
„Power measurement
Power measurement
Power measurement
Power measurement““““
The aquaduct 360/720 XT mark III offers advanced functions to calcu-
late absorbed of emitted power of up to two zones of the cooling circuit.
Prerequisites for these calculations are water temperature sensors at two
points of the cooling system and flow measurement. These sensors are
already integrated into the aquaduct or can be connected to the PC in-
terface board respectively.
Using the two temperature sensors for water inlet and outlet tempera-
tures, the current power dissipation of the aquaduct can be monitored.
Furthermore, single spots or areas of interest can also be monitored, for
instance by using two additional temperature sensors in the water supply
and outlet lines of the CPU water block, current CPU power dissipation
can be monitored (sensors und CPU water block are not included in de-
livery).
From the difference in temperature and the flow, the emitted energy is
calculated. To calculate the power, the heat capacity of water is
needed, which is 4187 Ws/(kg * K). Therefore energy of 4187 Ws is
needed to heat up 1 kg of water by 1 Kelvin.
Power= heat capacity * volumetric current („flow“) * difference in the
temperature
The power measurement is generally somewhat problematic due to the
inertia of the system, especially shortly after the start up of the system the
power measurement will show values that deviate from the real power.
Also every additive to the water will change the heat capacity of the
cooling liquid, which can not be taken into consideration in the calcula-
tion of the aquaduct. You should therefore regard the calculated value
only as interesting additional information.