Volts in on Fan Bus?
Posted: Thu Jul 07, 2005 9:15 am
I have been thinking about a watercooling solution for a carpc for some time now, but I need to have a concern I have checked out first.
Ok, so the rig in mind here will be P4 based, opus powered, and fitted in the boot of a saloon. The sealed boot is only going to get hotter and hotter, especially with 3 power amps in there too, so I plan to run the water pipes from the boot to a radiator mounted at the front of the engine bay. This is all great, past experience of watercooling tells me this should work very well when the car's moving. However, anyone used to driving in the UK will be used to the jams, and I know the radiator doesn't dissipate enough heat passively, it needs to have some air flow going through it otherwise I can expect overheating... ...So the obvious answer is to stick a nice big 120mm fan on the radiator to keep air moving through the rad in traffic jams. I plan to mount an MX series display upfront to control the fan in the engine bay. BUT.... when the jam clears, and i'm back cruising at 80mph, the airflow from the moving car will be enough to turn the fan blades.... a lot. This will then turn the fan in to a generator and send volts in to my lcd! not good!
Is this something to work around, or is a singl 120mm not going to produce enough volts to worry about?
Ok, so the rig in mind here will be P4 based, opus powered, and fitted in the boot of a saloon. The sealed boot is only going to get hotter and hotter, especially with 3 power amps in there too, so I plan to run the water pipes from the boot to a radiator mounted at the front of the engine bay. This is all great, past experience of watercooling tells me this should work very well when the car's moving. However, anyone used to driving in the UK will be used to the jams, and I know the radiator doesn't dissipate enough heat passively, it needs to have some air flow going through it otherwise I can expect overheating... ...So the obvious answer is to stick a nice big 120mm fan on the radiator to keep air moving through the rad in traffic jams. I plan to mount an MX series display upfront to control the fan in the engine bay. BUT.... when the jam clears, and i'm back cruising at 80mph, the airflow from the moving car will be enough to turn the fan blades.... a lot. This will then turn the fan in to a generator and send volts in to my lcd! not good!
Is this something to work around, or is a singl 120mm not going to produce enough volts to worry about?
