Not quite sure whether you were showing the lights or those ! Lol.
Hhmm. Ima have to check that out. Awesome! My water reservoir is made out of a beer cooler with a 80mm intake fan with a 1000gph sub pump on low setting. I think the length of the whole circulation is about 10 feet of tubing. I use my ph meter to measure the water temp and havent had it anywhere above 76° fresh water for a few hours as cold as 55°-62°
I tend to agree - a decent sized water reservoir will hold a shit ton of heat, and evaporation will cool it quite effectively, given enough surface area.
If the top is open, blow a fan across the water's surface to take advantage of evaporative cooling. The warmer the water gets, the better it works.
Nice build and a neat job. Here's my version of this kind of setup starting here, you should find some useful info there. I'm in Canada and sometimes we do things a bit different when it comes to grow lights because of necessity.
refrigerators use compressors that maintain a set temperature range with high/lows switches, a chiller unit works from a set temperature and will run until the set temperature is maintained.
love this light simple elegant. I have a friend that builds water cooled leds also. They use similar clear tubing small pumps and radiator.
I like your design and ingenuity and think I'd like to do something similar with some 1" square tubing made into cooling tubes and some 2 or 3" x 1" aluminum architectural "C" channel that costs about $2-$3/ foot where I live. I like the epoxy/ paste behind the COBs idea and the fact that screws can be used to mount COB holders. I think I'll try a strip of double sided CPU tape down the whole length of the tube and measure it's thermal performance with a few old cheap floodlight COBs. Alternately it should be possible to hold the tubing tight to the channel mechanically with spring steel wire or plates and holes drilled near the top sides of the 1" high channel and use regular heatsink paste down the entire length of the tube.
- Sorry - I think that`s not true.
6 quarts of water a day is cheap.
The minimum power that the refrigerator will need -
is the amount of heat power that you fill in.
And this can be ~ 60% of your electric input.
i.e. my watercooled 300W lamp * 18h * 60% = 3,24 KWh of heat power every day.
I put it in a heat exchanger and can use ~80L of hot water / day in the shower.
Also a cheap and electricity neutral way is to use a cooling tower in combination with the air
that you pull out of your grow room.
https://www.rollitup.org/t/diy-heat-exchanger-idea.936494/
This way you don`t have to spent additional electricity - but you need some water to vaporize.
To cool above 300W lamp you need ~ 5,4L / 3,24KWh to vaporize and add it every day to your cooling system.
Still holding up with no leaks? It's a great idea the adhesive shrink tubing, cheap and easy. I'm wary though. How many shrink wrapped fittings in total have you been running?
