DIY "Indirect" Evap AIr Cooler! Produces Cold/Dry Air (No Humidity!) - AC/DC - can be solar powered!
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- čas přidán 10. 06. 2023
- DIY Indirect Evap Air Cooler! Homemade indirect evap system! (the 'indirect' part means that there is no venting required and the unit adds no humidity to the air!). in this video i combine two of my previous projects to make what's called an "indirect" evap air cooler! indirect units take advantage of the fact that evap coolers not only cool the air but they also super cool the water in the bottom of the tub (and they keep it cold). this unit chilled my tap water (12 gallons of it) from 80F down to the mid 50's in about 5 minutes. that cooled water is then pumped through a heat exchanger (radiator) which cools down and then the radiator cools the air that is blown through it. unit produces cool air (from that cool water) all day long. with air temps of 85F(30C) i was getting output air temps around 60-65F (15.6 to 18.3C) steady. the unit holds 12 gallons and runs 10 to 12 hours per fill-up. you just fill it and you're set. remember that the part with the pads stays outside and the radiator part (cylindrical heat sink) goes inside.
the links to the 'full build videos' for each project are listed below. unit can be AC or DC powered (DC options include solar panels or batteries). the ice-based air-cooling unit and the cube-shaped evap air cooler can both be used separately if you want. i made the radiators 'fan/tube assembly' removeable from the ice chest so you could move it to any water source that you want.
please rate, comment and share it with everyone you know 🙂👍
🟢 link to the full video of the ice chest air cooler with radiator (the video shows how i made the cooling tube) • DIY Air Cooler! w/Tubu...
🟢 link to the cube shaped evap air cooler with the pads (includes the build)
• DIY Evap Air Cooler! B...
🟢 link to my most comprehensive video on indirect evaps (with the big fan). this video is basically everything i know about evap cooling. • DIY "INDIRECT" Evap Ai...
🟢 link to my video on the 100% solar powered evap system i made
• DIY "Indirect" Evap Ai...
i have several more videos of evap units and ice-based units with the fans. to find them all, check the playlist area of this channel. all are listed on either the Evap Playlist and/or the AC Air Cooler Playlist.
here's a last link showing how i put the radiators on the big fan and how you can use it with ice. • DIY Air Cooler! Homema...
if any of the links don't work or go to the wrong place, please let me know. - Věda a technologie
I like how you describe and show details of each item needed for the projects
hi. you bet! i want to make sure that people can make the projects so i try to be detailed. i kept the smaller details to a minimum in this video because the associated 'full build' videos (links below) have the fine details in them. if you or anyone else has specific questions always feel free to ask. if you put it as an original comment i will see it. (i don't always see replies though)
Nice! You can also have the whole thing indoors, if you vent out the air that has the moisture. That moist air can take up some additional heat on it's way out if you use thin aluminium air duct. A really lazy option would be to use a very long air duct, so you get all the cooling you need from that. Not a cheap solution, just simple.
I think indirect evaporative cooling have much more potential than most realize, "everyone" thinks its the air that cools down, but it's actually the water that cools down first, and then the water cool down the air.
I watch and watch then I try. THANK YOU, THANK YOU for all your work and Time.❤. This Summer's project (using uour ideas) here in the dry PacNW, is a COOL ROOM FOR MY PRODUCE, which can get ahead of me when fruits and veggies decide to all come on all at once and I can only move at human speed to do the prep and preserving. 😊❤
hi there. sounds like a great use for the cooler. have fun building, making and using it! 😎
Planning on finding some fun in building this project and great amounts of joy in getting a bit of a reprieve from the crushing demands of a large garden/small orchard in harvest season.
Many blessings on you. I have enjoyed copying your projects over the years.
Smart ideas! Nice thumbs 👍🏻 ~John
hi and thanks!
Nice VDO.
what a great idea!
Thank you! 😊
Nice 👍
Adding a radiator on top of the fan, to precool the warm return water with humid, cold air might be worth trying.
You could also insulate the cold water tube to minimize heating the water from the hot air outside.
hey there. you borrowed my thought! i just started on a unit two days ago that does exactly what you said. it has the return tube connected to a second radiator over the cool air. i just got done with 5 hours of filming and building it this morning. it's still a long way from being done but... it's getting there. it's going to be my first 'Two-Stage' Evap Air Cooler. it increases the overall efficiency of the unit so it will operate better when the humidity is higher. should be really good for the people living in the 'borderline' areas. it will be out in video form in a couple of weeks (hopefully)
Wonderful ❤️🙏🌈🌹👍
@gulu hi and thank you!
wow love the effort. I'm thinking of running small fans on heated salt for my van. no ac in there at all n over 90 degrees here already so I feel like I'm being baked during the afternoon. ty for sharing your ideas with us :)
hi or consider making a smaller evap unit that could work in your van. this unit can easily be re-sixed for all needs. also check out my ice-based fan videos. the ones with the smaller radiators work great in small spaces (vans etc.). here's a link to 2 of them czcams.com/video/5YVPu9hfhZo/video.html and czcams.com/video/DERYsKnlKzA/video.html
Wow great setup. I belong to very hot climate area. Right now it’s 42-47c here. We use a lot of evaporative water coolers. But hot weather lasts for 3months max than comes hardest hit n humid weather. Evaporative coolers fail due to high humidity. So only option is air conditioning.
But your setup is genius. We can place evaporative cooler outside and circulate cold water in radiator will create some cooling effect without humidity.
I have a question. If we build taller water falling surface area than what max cold temperature we can get in water? Like you used a bigger radiator inside so get maximum out of cold water. So can we also build taller evaporative waterfall outside; can we get colder water or not ?
Very nice indeed sir, last year you also helped me a lot, then I had just made the cooler and the temp. back to normal in the Netherlands....so I was not able to test it. Now it has been 31 degrees Celsius again for a few days, so you understand that the sparrows are falling dead again from the roof. Now I just came across this new video of yours and it really appeals to me, less messy with water. Now English is not my first language, so I mainly rely on the examples. I see an elongated radiator there. My question is, does it really make that much noise or is it because it's on the coolbox? Where can I buy this. How many cubic meters, can I cool with it if the height of the rooms is 2.5 meters. Thanks in advance for your cooperation. Greetings from Rotterdam.
hi. it's not very loud. it's really just the sound of the fans. microphone on camera just makes it sound that way. if you don't mind the sound of a fan then you shouldn't mind this. i don't know the square footage it will cool. that will vary a lot based on humidity and temp levels.
Great project. Going to try it. If you would be able to add some links to the heat exchangers, especially the round one, that would be great!
The COP factor for such a system can be 10-20 higher than standard AC systems. Really wondering how effective this work in my house!
Thanks!
hi and thanks! here is the link to the exact round one that i used (if the link ever changes just search for 'flashpower 12" transmission oil cooler')
www.amazon.com/Aluminum-Finned-Transmission-Coolers-Dual/dp/B0714LM6ST/ref=sr_1_3?crid=1H787SH68RU9Z&keywords=flashpower+oil+cooler&qid=1686849766&sprefix=flashpower+oil+coole%2Caps%2C309&sr=8-3
just a heads up... i just built my first ever "Two Stage" Indirect Evap Air Cooler (with 2 square shaped radiators) the other day. been testing/filming/editing it all in the last couple of days. stayed tuned - video in a week or two! a two stage unit is basically the "top end" of indirect units. works with all types of fans ac and dc.
I'm cooling a shed of mine this way. Obviously a much larger scale. Was 100 yesterday, and it was 82 in the shed.
awesome!
👍
👍 Nice work -- btw where in the world are you? In the UK, so humidity can be a problem for us at times. Just got my radial finned cooler in the mail!
Any thoughts on @RobertMurraySmith "1953 A Folding Silent Air Conditioner" and "1954 DIY Hybrid Air Conditioner Run From USB, Solar Or Battery" (especially the blade change!).
Being in the UK, I never worked out why we don't have 220v box fans here..never seen one for domestic use.
hi. i'm in southwestern USA. i haven't seen his videos. i get so busy with making stuff i almost never actually watch videos. i'm not sure why some areas don't have box fans. they are quite common here in the USA.
I don't understand, if this works and I think it will then why has nobody made this type of commercial systems? I'm from western India and here with low-medium humidity evap coolers work awesome, this system can do wonders if we make it properly, if you're free you should do proper calculations of the size of evap cooler and other things for per ton of cooling etc. Your video is really Nice. 👍👍👍
hi there. they actually do have a couple of systems like this that are commercially available (but only sold in certain areas - i imagine). i'm not sure why they haven't gained in popularity yet. maybe soon they will. if you set it up right, it can feel the same as an AC unit. where i live when it's under 30 or 40% humidity these feel the same as AC. by the way, i just set up a DIY two stage indirect evap air cooler! the "two stage" design takes it up to the next (the highest) level. video out in a week or two. it uses two of the 'square shaped' or standard radiators. lowest temps and quietest fans. stay tuned.
@@desertsun02 I'm going to be using the Hayden Automotive 402 radiator with two 120mm Noctua fans with my setup, but I can't wait to see your two-stages design! As for the hard-to-find Dial polyester foamed pads, they're incredibly expensive in Canada at nearly ten times the price, but it seems to me that the Scotch-Brite Non Scratch Scrub Pads are nearly the exact same thing, and while they're much smaller in size, the price in Canada seems about the same as your Dial evaporative pads in the USA.
@Yvan256 the hayden 402 is a great choice. two 120mm fans fit perfect in front of that radiator. evap cooler pads are designed in a very specific way to hold water but also let air through. i don't think scotch brite scrub pads will work. they really need to be some type of evap pad. maybe you could order the evap pads straight from a home depot in the states. or off of their website. by the way, i might be posting the video i made of the two-stage unit today (06/23/2023). it came out super.
This is commercially used fyi these are called cooling towers
@@dadz6364those use indirect cooling methods? I thought those are regular evaporative coolers made by people who don't know about indirect cooling. Yeah I was right I checked no of them mention the idea nor imply in any way that it cools the temperature by that much. They are all like big fan super far air throw throw air left in right with automated air swinger's. I don't think automated air swinger's will be needed in a system like this.
I love your videos and projects! What kind of radiator are your using here? I wasn't able to find one like it.
hi and thank you! it's a 12" (tubular) transmission oil cooler. you can find them on amazon. here is a link to one tinyurl.com/mvv89uf9 (i think that's the exact one i used). they do have them cheaper too. here is a link to one that looks the same and is 15 dollars cheaper tinyurl.com/yc7brnun
@@desertsun02Sorry I am a bit late (due to some personal issues), but thank you very much for your reply! I hope to built one of your ideas soon too for a small room of mine (my hobby room), which is 13 x 7 x 7,5 feet I think. Hopefully it will work, bcs I cannot have an a/c here.
Is there a way to use freon or freeze spray instead of ice somehow?? CRC spray cools surfaces to -60f
Can the small oil cooler seaflo fan work this way on an existing hessaire evaporative cooler? I figured it would be the same Theory I already have a small 500 sq foot swamp cooler I want to add to.
hi. yes you should be able to use the tubular radiator with the seaflo fan with any regular evap air cooler. all evap air coolers chill the water in their water reservoirs. you could also use just about any fan/radiator setup if you can't make the tubular one.
@@desertsun02 Thanks. yes I already made one with an adjustable fan control knob. Thanks again for providing all of these awesome designs. I'm off grid in northern Arizona and have successfully implemented several of your designs.
What if you put the coolers inside and throw the wet air outside and just re ran the dry air that was created using the evap cooler. You can go below the wet bulb. Beat the humid lock. The dry air will just cool your room while it also goes back into the evaporator cooler. No reason to not work theoretically that is specific to a evaporator cooler. If your argument is if you throw air outside tried this then won't outside air start coming in because of low air pressure and stop the cooling. Well argument maybe works I guess.
The cool-humid byproduct might enhance a greenhouse environment...
🌱🌷🍅
that sounds like an excellent idea. i hadn't thought of that. my next video is going to be using the cool 'exhaust air' to re-cool the water coming out of the radiator. i'll cool it before it re-enters the tub. that will make what's called a 'two stage' indirect unit. will be my first one of those. just started on it yesterday
Cool! 😊 under what humidity does this cool?
hi there. the lower the better but it's roughly the same as standard evap cooling, so it works up to about 60% humidity *in some cases up to 70% (in lower/warm temps). it will struggle over that. if you have lower or semi low humidity then this thing basically is as cold as an air conditioner. if it's moderate then it will still be cool but slightly warmer than ac.
@@desertsun02 Does algae interfere after a summer of use? How many summers have you used this? How many rooms does yours cool?
Great work!
algae has never been as issue for me. i just make sure to turn it off every 12 to 24 hours so the pads can dry out. that only takes about 5 to 10 minutes if you leave the fan running for that same 5 to 10 minutes. if you don't run the fan the pads will be dry in 30 to 60 minutes. i've used the unit ever since i made it a few years back. it cools about half of a small house in low humidity
what about for sub-tropic areas with high humidity? any suggestions? the swamp cooler approach doesn't seem to work well, or i'm just not placing it properly for max effect
hi. the main way to cool in areas with very high humidity is with cold or ice water. you could just make the ice chest air cooler part of this and use ice. some people run tubing through a small fridge to keep the water cold. you could also use a small de-humidifier.
Or we can keep that part outside in which humid air is coming out
what is the cylindrical thing that is amongst the heat exchangers? A different kind of heat exchanger - because you did not meantion it?
hi. it's a 'transmission oil cooler'. you can get these tubular ones on amazon. the one i used is a flashpower 12" 'double pass' one.
If it was in a relatively high humidity environment would it stop working pretty much all together or just drop effectiveness?
hi. it drops effectiveness as the humidity rises but works well in low and moderate humidity.
Aloha! im working on trying to figure out a system to cool down our food trucks.. I was thinking if I could put the water bath in a space under the truck, and put all of the mechanical under the truck, there is a space about 18" wide and 18" tall that runs the length of the chassis, against the outer wall of the food truck ( p30 workhorse), and then ducting the air up into the truck, to the ceiling and letting it flow down.. what do you think?
hi. i think it sounds like a good plan.
try Ca(OH)2+water as combo water+desiccant with the fan, boxed (Calcium Hydroxide in water, lime water), optionally ice water
could be a water evaporation low vacuum heat pipe, just get the heat out of the room/space
Whats the result in closed room like how long it takes to cool ,temp difference etc
hi. not very long. in terms of time it's similar to a window AC.
I'm living in my van in NM I need a way to do this
hi. it should work great for a van. even just the direct evap part (the cube with the pads) and you could blow that in. open a window for cross ventilation and you're set. that cube would easily cool off a van.
I almost forgot to ask, what exactly is the name of the radiator cooler and where can I buy it? 😉
hi. the radiator is a transmission oil cooler. it's a 'flashpoint' one. you can get it on amazon.
Explain the black oil filter machine
hi. the black oil filter machine?
Do a atmospheric water generator
hi. yes, i do have one (but i can certainly do more of those if you want).
May I ask if it's working with 48°c temperature 🤒
hi. yep, it will work at that temp. if you have air this hot (48c=118F) it is most likely very dry air, so this unit should work well.
DiWhy. In the fall you can get a window unit for 150.
yep, but then it costs that much in electricity every month to run it. (i was literally paying 150 a month for the electricity a few years back). plus DIY is cheap easy and fun 🙂 (and since you made it you can always fix it if needed). cost to run this unit is very very low. just a few dollars a month
How big of a device(s) would you need if you wanted to affect weather (storm cycles/drought)... on either spectrum... lol, only perfect weather with just enough watering and cleaning of the air...
It would be hilarious if all it took was to retrofit the roof/exterior walls to be multiple, giant arrays of peltier devices (that are connected to unique tubings for temp transferring).
To Heat and then cool... imagine if every home was fitted to distill water onto the heater side, on those hot summer days... lol, then some electrical shocks randomly discharged to imitate electrified water... instant plant growth syrum... for free!!
Free food forests everywhere!
More ease of populating the BLM lands...
What do you think? It's a crazy reality, where random people get to dictate how much things are worth... and they get a huge chunk of it... compared to those that do things for the betterment of society... getting axed...
Break their system and they get mad... we get screwed because of their system, and we are told "to just ignore it and focus on this... don't focus on everything else breaking..."
[adding essential oils onto a filter to blow scents into the air... (without all those toxic chemicals in other brands)
I wonder how effective this would be if another plague hit... Since our infrastructures are failing... to boost the immune system, defuse emotional triggers, create more "sanitized areas"... and much more!
WELL THATS NO GOOD..ITS LOUD AS FUCK
hi. it's just a couple of fans. if you don't mind the sound of a box fan on medium or high you'll be okay with this system. my camera has the mics on the front of camera (so it always sounds like you have your ear up to it). they also sell quieter fans and you can adjust speed downward. btw, i just set up my first 2 stage evap unit in the last couple of days. it uses the super quiet fans and has high end speed controller on the main one. it's the quietest unit i've ever made. video will be out in a week or two! stay tuned.