First mistake I see us that you have your test indoors, so the ambient temperature is reliant on the cooler interior temp. Notice their's acts like an interface between the exterior and sheltered heat resonator. So it does just encourage air flow and temperature balance but the temperature difference will not be as pronounced as an AC. Maybe if they included a coolant mechanism. I posit that the flow of air is the cooling effect.

Thanks, Nathan, for taking the time to do and share this experiment.

You should try this with the caps on and a single small hole punched in them. Supposedly, the bigger the size difference the greater the effect.

So, let me start from the basics. If you compress air, it will make it hotter. If you decompress it, then ... yes, it will get colder. The second thing is that the air pressure around the house is the same as inside of the house. The question is ... how the hell the air has to decompress inside of the house? You would need a pump inside of the house to get rid out of the excess air, so the pressure would be lower. If you don't have one, then you are increasing the pressure inside of the room, thus making the air hotter than it was before. If the pressure outside and inside are the same, then the temperatures are the same as well.

@nathanwaldock782

3 жыл бұрын

I assume you are referring to the eco-cooler video. I was skeptical about it, which is why I created this test.

What if the bottles are all parallel with the fan and not perpendicular?

@nathanwaldock782

3 жыл бұрын

It shouldn't matter whether they are parallel or perpendicular. The air is being drawn into the box by the fan, and it can only enter through those bottles. So no matter how the bottles are situated, there will be air being sucked through them.

why make the flow of air from outside in and turn the bottles around

@nathanwaldock782

2 жыл бұрын

There is no good way to measure if the bottles are actually cooling the air down if I have them going from inside to out. The purpose of this experiment was to see if this is an effective way to cool the inside of a house as shown in the original video.

Your cooler temp was the same as room temp also

You did not create the grid so your data is moot. You are not repeating the original idea.

Not a valid test. You're not effectively creating compression outside the box. To work, the air must compress inside the large end of the bottles. By running your little exhaust fan, your preventing compression because you're sucking air in before it can compress. Essentially, you've created a vacuum and you're simply pulling air through the bottles. Also, this is such a small scale test using tiny bottles. The eco coolers I've seen are dozens of two liter bottles. I'm not saying that they are a reasonable replacement for central air, and I'm not entirely convinced that they work as well as claimed in some videos. However, thermodynamics proves the CONCEPT is sound. I just don't believe your testing methodology was terribly "scientific." To test it properly, you would need to recreate a full scale model and do it through a window in your home - not through a hermetically sealed box using two fans. The idea, as I understand it, is that a breeze blowing into one of these setups, with the bottle outside and the opening pointing inside will work. Also, the structures these are used on are not airtight. In fairness, I also kind of felt like you were conducting this test to prove they don't work, rather than testing to see if they might work or not. I do appreciate the effort you put into it though.

You should have done more research before posting this. First, you should of replicated exactly the same with the OP. What you have but does not create the venturi effect. You cut the bottles too short. This system is supposed to create air circulation with the temperature difference between outside and inside. I hope you post another post.

Las botellas están al revés

you have the bottles facing the wrong way. an Eco cooler works by compressing the air. So the airflow needs to go into the large end of the bottle and come out to the small end of the bottle

If that method was effective, every company would have used in their products(like air vent outputs) and even create a new product based on this.

@nathanwaldock782

3 жыл бұрын

Correct.

Complimenti per l'impegno ma la prova non è corretta. Questa tecnica di "raffreddamento" viene usata per abbassare la temperatura di una casa (baracche col tetto in metallo in genere) che hanno al loro interno una temperatura più alta della temperatura esterna! È praticamente un sistema di ventilazione naturale per prendere aria più fresca da fuori e mandarla dentro. La sua prova è stata svolta su due "ambienti" (la stanza e la scatola) che si trovano alla stessa temperatura! Quindi già senza fare alcuna prova è chiaro che la temperatura all'interno della scatola non potrà mai essere più bassa dell'ambiente esterno! Cordiali saluti

This was not a well thought-out experiment smh

lo esta usando al revés el concepto

Grt effort bt u did it in a wrong way

@learning-wb8wj

3 жыл бұрын

In first step u compressed the air and then again expanding it by giving lot more space inside the thermo container

@nathanwaldock782

3 жыл бұрын

@@learning-wb8wj This was according to the eco-cooler video which claimed to have a reduction of 5 degrees Centigrade.

You should blow air into the bottles but not suck air in like that in order to make high pressurized air, which is (SURPRISE!) the cause of the air cools down

@nathanwaldock782

3 жыл бұрын

Notice that I did blow air into the bottles with the external fan.

@tuulikk9193

3 жыл бұрын

@@nathanwaldock782 But the fan on the box was still sucking air out? I thought the idea was to have the air coming out of the bottle necks, not being used in a setup like this. But no matter what way, I don't think it will have an effect. Interesting test however.

@nathanwaldock782

3 жыл бұрын

@@tuulikk9193 The idea was that the air coming out of the bottles will cool the interior of a building. By sucking the air out of the container, I was creating room for air to enter through the bottles. According to the eco cooler video, that should have resulted in a lower temperature in the box.

Dear you are doing it the wrong way! YOU HAVE TO BLOW THE AIR IN, FROM A HIGHER PRESSURE TO A LOWER PRESSURE WHILE SQUEEZING THROUGH NARROW HOLES WHICH CAUSES THE COOLING EFFECT ! please Don't fool yourself and others.

@nathanwaldock782

3 жыл бұрын

I think that is exactly what I am doing here. The vent fan in the box creates an area of low pressure in the box. The fan outside the box blows the air in through the bottles. It still does not reduce the temperature in the box.

@timwoodman1154

Жыл бұрын

@@nathanwaldock782 It creates an area of high pressure as the area on the small bottle holes is lesser that the fan diameter, and the bottles are the wrong way round for starters

It's a myth, but regardless, your test is rather poor.

Indian is trying to scam even physics hahahaha

lo esta usando al revés el concepto