Despies DIY **Free** AC 100 watt to run!

[twojoints]

hey, you said if anyone has questions about this you would answer them.

but since i offended you, ill just leave you with one last question.

you said the exhaust is cooler then normal. now, while abiding to the laws of thermodynamics (in other words, reality), where in the hell does that lost heat go? you have two ports, in and out. if colder air goes out, that heat must be coming back in. simple as that.

if you would like to debate, as ive been trying, i would love to continue. but simply telling me 'im wrong' and 'i didnt read the whole post' is simply backing out and getting defensive.

eidt- i forgot to mention i worked in HVAC too years ago and i have been a union electrician for the last 7 years... so yes i do have an idea what im talking about

 

[Despie]

the heat turns to water its called condensating. thats how AC works. Not defensive by any means and i love the questions. theres four ports. this system works on all the four ports moving air.

 

[ogatec]

so if your room basicaly has unlimited head output from 3k lights, & the temp outside is let say 80-85f (night time temp outside here in summer)...you are saying this system can take temps down to 72f? or whatever temp you set it at? i just dont see how that is possible, wouldnt the max temp reduction be down to 80-85f?you talked about the system freezing up & forming ice!?!?! i just dont see how that is possible with ambiant temps around 85f...

now what about humidity, my outside rh is constantly around 95% in summer time, with this unit rh can be conttrolled like a normal ac? without rh control it would be basically be raining in my grow with 95% rh + all thr moisture the plants are pumping out. so the rh can be brought down to like 60%?

i just dont understand how this could be possible with a "passive system".

 

[Despie]

og tec how many lights are you running?

 

[cocktail frank]

nice stoner ingenuity Despie!!!!!

twojoints,
if you say you were a tin knocker, you should know this.
also, if your a union sparky, you should have taken a class on hvac theory and wiring.
especially 7 years in.
i dont know what state your in, but if your unions are as slow as in my state, your probably rusty from sitting home w/ no work.
it is basic a/c theory.
what happens when hot and cold fronts come together in the atmosphere?
rain man.
rain is the end product of condensation.
do temps lower when it rains?
yessir.
all this is, is a less than efficient a/c system.
electrically speaking, it saves power.
the only way this works well cooling wise, is if the outside temps are lower than the room temps, or way dryer outside.
if yer in a colder climate, this would be for you.
K+

 

[twojoints]

its not possible ogatec. if his temps in that room are colder then outside its because he is sneakin in cool air under his door from his air conditioned house or something. its simple laws of thermodynamics, theres no argument.

Despise- youre missing the whole point. Condensation of water is VERY different from condensation of refrigerant like freon. water condensates because of temperature differences, but when water condensates it doesnt FREEZE or get colder! and that condensation is just a byproduct just as it is on a real a/c (buy youll have little if any water condensating).

in a REAL a/c, the condensation of the FREON is what gets COLD. FREON gets very hot when the compressor expands it into a gas. that gas, when run though MUCH COOLER AIR like that of outside (even in the summer) is what makes the freon condensate inside the tubes and get cold. the water that condensates on the outsides does little good at all. its just waste.

since youre not running any refrigerant, what you have is a heat exchanger, nothing more. you could take out that $800 box and run your fan at 50w and still get the same results.

 

[twojoints]

nice stoner ingenuity Despie!!!!!

twojoints,
if you say you were a tin knocker, you should know this.
also, if your a union sparky, you should have taken a class on hvac theory and wiring.
especially 7 years in.
i dont know what state your in, but if your unions are as slow as in my state, your probably rusty from sitting home w/ no work.
it is basic a/c theory.
what happens when hot and cold fronts come together in the atmosphere?
rain man.
rain is the end product of condensation.
do temps lower when it rains?
yessir.
all this is, is a less than efficient a/c system.
electrically speaking, it saves power.
the only way this works well cooling wise, is if the outside temps are lower than the room temps, or way dryer outside.
if yer in a colder climate, this would be for you.
K+

so what? that condensation is just water at the same temperature as the coldest air you already have at best.

doesnt anyone know thermodynamics? when i ask about it, why do people tell ME i need to go to class?

 

[ogatec]

og tec how many lights are you running?

im running 3.6k

 

[Despie]

because we are talking about heat recovery not thermodynamics...plus i still dont think you understand the way the core works. I've tried to explain http://en.wikipedia.org/wiki/Thermodynamics this is a system with three compressors. like a steam engine. Im kinda puzzled at what exactly thermodynamics have anything to do with what im talking about.

 

[Ganja Guerilla]

So the exchanger is in essence acting in the same fashion as a swamp cooler and utilizing evaporative cooling... yes? Then it is also dependent on delta-t and outdoor RH like a swamp cooler I assume...

So...
How does the core dispose of the condensation?
At what delta-t does the system cease to provide any return versus typical air exchange/ventilation methods?
Is this more efficient then a swamp cooler if they are performing the same function?

Just trying to figure this out...
GG

 

[ogatec]

after thinking about it this system does have its place, but i dont see it as a replacement for an ac only a supplement, unless your temps outside temps are really cold. could it be used to cut the need from about 18 -20k btu to mabey 8k btu, sure. but i just dont see how it could completley replace a conventional unit.

from what i understand it could take all the heat the lights put out and exchange the heat to the outside air, but it cant take the air to a lower than the outside ambiant temp...right?

now what about RH? this question was never answered.......since im am from a high RH (95%+ RH year round) how would this affect the system?

 

[Guest]

Despie, I LOVE tools, equipment and building in general, your set up is Absolutely top drawer. I just wonder how many folks here can afford the system when so many of them have financial issues, and space limitations.

Damn that's beautiful work! Professional in all aspects Despie, Hooah!

TyStik

 

[Guest 18340]

Despie, Ill be growing in 4x6x8 room with2 600watt air cooled lights. Here in Florida it gets so hot you'd think you're in Hell. Temp control is ultra important. I was gonna buy a split ac system but your system is definately more energy efficent. Do you think i can get your system to work in my growroom as described? Thanks for your time

 

[blynx]

Are you running this unit in 'reverse'?

If I am reading you correctly, you are saying 'cool air from outside is brought into the grow area as cool air', but the explanation below says 'cool air from outside is brought into the grow area as warmed air'.

If you look at the explanation below of a heat recovery unit, it seems to be doing the opposite of what you are saying.

Taken from Popular Mechanics page on how a heat recovery ventilator works.

http://www.popularmechanics.com/home_journal/how_your_house_works/1275121.html
http://www.popularmechanics.com/home_journal/how_your_house_works/1275121.html?page=2



This sounds cool, I'm just confused on how it actually works (ie cools) after looking at your and their graphics and explanations.

Wouldn't this only work if your outside air was warmer than your inside air?

 

[Guest]

What this all boils down to is that Eurogro wants to discharge air to the outside that doesn't leave the heat signature of a "Fire Breathing Dragon" on a FLIR scope. Yes? No?

TyStik

 

[Guest 18340]

You're all confusing me

 

[wafflehouselove]

where does that HOT condensated water go? im reading this is where all the heat is going?

 

[yamaha_1fan]

What this all boils down to is that Eurogro wants to discharge air to the outside that doesn't leave the heat signature of a "Fire Breathing Dragon" on a FLIR scope. Yes? No?

TyStik

Thats another thread

 

[eurogro]

What this all boils down to is that Eurogro wants to discharge air to the outside that doesn't leave the heat signature of a "Fire Breathing Dragon" on a FLIR scope. Yes? No?

TyStik

That is exactly what I'm trying to do.

 

[Poodo]

In warmer climates you could get the cool air from under your house.Despie so how about putting coolent in the tubes that the air pass over would that help. I think I could make one of these for less then 800.They should make one that fits in a window.cool