I did this with my last two heatsinks, which are Used laptop cpu coolers straight from the 'bay. Both had copper pads, with scratching but no large gouges. Swabbed it with ISA, threw down the PK2, vero 10 and then kapton. No hiccups. Obviously a lower voltage/wattage, but the lights run excellent in the veg chamber, no abnormal heating issues whatsoever, in fact, they seem to run cooler than my estimated Ta, so that should be a + .........
Great find ellydee
I have done business with LCK before and they are solid. I put these heatsinks in the spreadsheet and I agree, they are competitively priced even with shipping. They do have thin bases though, not sure they would work well with large COBS. Don't forget LCK discount code 12% off: CPFer
The fan sticker on it says .1A 8cfm just tested using it on an old 12v supply for a Remington electric shaver that died on me a couple years ago, actually its the power supply for my DIY colloidal silver gen. Im sure its not the most efficient supply, I plan to use a MW LPV-35-12 for the 12v supply also not that efficient only 84% but should have MW reliability and only $15 is fairly reasonable.
thanks for the info.... incredible what a tiny little fan like that can do
yup, I get between 4 watts with 110cm^2 of surface area per watt, or 5 watts with 90cm^2 of surface area per watt. However it's one of the more expensive profiles they have available at 130cm^2/$
observe and report built a water cooled cab. It works well and has interesting implications. It's not very practical for the average person though and certainly not cheaper. When you consider that you have to have a water pump(20-50watts) going constantly in addition to a high pressure fan(for the radiator ) it doesn't make a good case for the overall efficiency of the system.
Fan on radiator is only needed if the radiator is small, a motor cycle radiator would cool a lot of lights without a fan.
Go for it, report the results. If you're running a sealed environment with zero air exchange, I could see water cooling being a practical option. However it's going to be an expensive venture by the time you get the water blocks, fittings, tubing, pump, radiator, clamps, and other necessities. Then there is always the safety concern of mixing water with high voltage electrical devices. PC water cooling is a niche market for that reason as well.
I'm entertaining the idea for if I decide to run in summer this year. I wouldn't need much to setup a system. A copper coil water supply line for a fridge/drinking water, thermal epoxy, rubber hoses and adapters to connect the coil to pump, pump to radiator, radiator to coil. You would just have and in and out hose coming into your grow area. The copper coil would be thermal epoxied to the smaller heat sinks (or simple aluminum channel/angle.)
Any issue with aluminum and copper? and brass(fittings)? I would just use standard (green color) automotive antifreeze and water.
Aluminum is not a good idea to use. Brass and copper should get along fine.
Most car/motorcycle radiators are aluminum, so that will be pretty much a requirement.
Thx, I think with a corrosion inhibitor I will be pretty safe. I will have to see if there is one already in automotive antifreeze.