T
theTinker
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- 18
Just use that car battery charger, should work just fine
Word. Get one with a 2 amp trickle charge feature, you may well findthis is entirely enough power to run your fan and still keep it reasonably quiet.
Yeah, thats what my previous post was about.
It worked great.
update
I tried the lower power charger tonight. It didnt work due to short circuit protection in the charger. The fan must provide so little resistance that it believes its a short circuit.
Hey Tinker add a small 12v battery (like jetski,motorcycle...even ups backup)
it will solve the short circuit on chargers.Also look @ 12v-14v transformers in phone chargers.Or how about a old computer power supply?
i think this is awesome. keep us posted on how well it works for you. i am very interested in how well this works for people in the colder climates. we have done simillar type of set-ups using ice boxes and a compressorless chiller outside. same exact principle as what you are trying to do just using pre-made equipment. it worked great for us in southern cali for the whole winter and even in the summer for smaller systems as long as we were running at night. best of luck i would love to see this once it is up and running.
Strictly speaking, you don't need a reservoir, but the reason I suggest one anyway is because sooner or later you're gonna want to modify/repair/disassemble your system, and you will want to have someplace you can keep all that expensive propylene glycol you're investing in. Using a good sized drum as a res, and especially locating a valve right at the outlet, will allow you to conveniently pump all the working fluid into a container so you can work on the system. And while it's there, it will help keep your system running efficiently as well, by adding a little thermal mass to the working fluid to help reduce temperature swings.
P.S. I think Chillville means don't use a mix of propylene glycol and something else. But you do want the working fluid to be a 50/50 mix of p. glycol and water, the glycol isn't a very good working fluid on its own... Correct me if I'm wrong on this point, Chill?
Yeah, thats what my previous post was about.
It worked great.
update
I tried the lower power charger tonight. It didnt work due to short circuit protection in the charger. The fan must provide so little resistance that it believes its a short circuit.
Looks like Il pick up another one of charger i used earlier. A lower power one anyways. 8amps was overkill. The 1200cc model they sell gives about 4 amps. Should be more than enough. Having fun with this.
Thanks bro, I thought about that. Quick question, maybe u can answer. Can a battery be used + charged at the same time? I'd also have to make sure the charger crocodile clips dont touch the clips/wires to the fan.
Its ok though, the other free charger also had to be turned on and THEN pressed GO. I dont like this as it wouldnt work on a timer. The 32bucks charger in the picture above works on/off so this will work nicely.
And i might aswell buy the charger that works for 32bucks, rather than a battery for 20+ that will add other issues etc. But thanks for the idea. this would defintely overcome the short circuit issue with that charger. If i had a battery, i'd definitely go this nice free route :)
Might also help someone else who does similar.
Yes you can use a battery and just hook the charger to it, in fact that is probably the proper way to do it. The battery will act as a buffer, especially on startup of the fan when the most power is needed. It will probably make the fan and the charger last longer. A cheap lawnmower battery should work fine.
I have a water cooled system in a 25x15 flower room and a 25x6 veg room. it is to (help) cool the room with a 3 ton a/c unit and 9, 1000 watt lights. The water res is 200 gal and I have a water cooled CO2 with the water cooled cap on top so that 86% of the heat from the CO2 never heats the room up.... the water cooling does (HELP) but doesnt work as well as hoped especially on a hot California day/night....heres some hints... as many electric fans, coolers, blowers, pumps that you can have outside do it....they all add heat to your room and or your water.... another hint for the 2 tank system hot air/water rises so have a hose from the bottom of the hot water return tank exit from the outside down low and it will drain up and over the top of a slightly lower tank (pump tank) into the cooler/pump tank water always finds its own level.... so when you overfill the hot tank it will push the cooler water out the bottom (which is cooler) into the pump tank which then cools even more as it falls to the bottom before it is pumped.....If budget is not a problem...? get a 1/2 horse chiller or 2 (we have 2 inline) and put it after the 2 tanks and the pump as its pumped towards the fan/hot box in the room....another hint the submersible pumps run cool if they are not under very much of a load so (no restriction) and a bigger diameter hose on the return is also a good idea... it will take about 3 days of continuous pumping to start to cool the water ...its not very fast... another hint almost everyone has an air scrubber with a fan to scrub the air in the room...well add a hot box to the top and the cooler water will cool the air coming from the air scrubber/room and will (help) cool your room (we also raised our air scrubbers up to the ceiling to grab the hottest air to help cool it and to give us more plant/floor space ... we have added 5 hot boxes to fans either air scrubbing or moving air/circulation....the a/c runs much less in both rooms in fact the veg room a/c doesnt even run except on the hottest of days... general rule of thumb from water cooled ....is get way more than you ever thought because it works, just not as well as you might hope..... unless you can get a 4-5 horse power water chiller.
I never even considered condensation.
Will pulling air through the radiator with condensation on it create large amounts of spraying?
You wont get condensation unless your water gets below the dewpoint in your garden. This is typically between 55-62 degrees in gardens, depending on temperature and the humidity in the garden.
Pulling is better for condensation collection too, less spraying for sure.
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