This must be the first video on TH-cam I ever watched without stopping or pausing or rewinding or fast forwarding. This is what I consider a well made video.
You shoud see my experiment on my channel. It shows that adding CO2 to a lighting filament makes the filament dimmer, not warmer, hence refuting the supposed back radiant heat inducing effect of CO2. Radiation Greenhouse Effect is a lie.
So what your saying here (without so many words) is that resistance to wave propogation in any medium is proportional to inches of vacuum drawn...nice. The styrene was great way to demonstrate particle excitation upon repressurization. Subscribed.
Awesome collection of all the classic vacuum physics demos. You have an extremely good compressor there. My refrigerator compressor only brought it down to about 1 psi. I would like to see if you can use the vacuum to make a radiometer. Hopefully some HV experiments too?
My eighth grade science teacher used a pump and table like this with a glass cloche to do demonstrations. The most memorable was his first demo with it. He claimed it was a fancy hot plate and bet the class he could drink boiling water. He won that bet. He then proceeded to do a lot of the demos here. Cool stuff.
Excellent set of experiments. It would have been interesting to see vacuum gauge readings at various phases, for example, when the water 'boiled'. I'm planning to build a vacuum pump for vacuum bagging and low pressure distillation - the air-con compressor you show looks ideal for this.
Way to go Roobert!!! I never get bored seeing your experiments..do try to speak into the mic as well once in a while, at least we can hear your voice too...keep up the experiments and also try to replicate the Testatika machine when you have the time...
I repurposed a dehumidifier compressor for a vacuum pump (not as big as your A/C unit on the video). I've used it for bleeding automotive brake lines that were difficult to either gravity feed or hand vacuum pump. It performed nicely.
So many experiments are performed in this one video, it is helpful for my explanations with my children. An interesting video ever I have seen on you tube.
Really good!! I will use this clip in my classroom, it gives a good understanding about what air is and how things work without it. Especially the polystyrene balls and the bell!
What is the explanation of the fluorescing bulb under certain pressure in your last demostration? It started no light when it still in environment pressure, then started fluorescent, then it off again. What is the explanation about it?
Thank you! A great vid! As a refrigeration mechanic vacuum is a part of our day to day work. I'd love to see an ammeter fitted to the axial fan though, to see the effects of a frictionless environment on motor load. I'm guessing amp draw would fall....
"Electric Experiments" Roobert33 No, you are mistaken. The boiling point of water changes in relation to pressure. This property is exploited in heat pipes. SCIENCE!
i like how you say the water is bad for the compressor. as if running air through an airconditioning compressor is somehow not bad. (there is moisture in air)
MrEHoss That would be refrigerant when it is installed in an air conditioner, not air. The air is cooled by passing it over a heat exchanger (the evaporator).
This is awesome, but what compressor was used and how was this unit hooked up to work this way. Id be interested in making this ame set up to degass the silicone molds I use for casting resin scale model parts.
9:45 You could put a rubber hose on the compressor discharge and direct all that oil mist into the bottom of a plastic coke bottle packed with polyester floss from an old stuffed animal or sofa pillow. That would absorb all the oil, then you won't be breathing that nasty stuff and it won't cause pneumonia or lung damage.
Grazie Robert per aver condiviso con noi le tue esperienze . Stavo appunto cercando sul web dei consigli per creare una pompa per sotto vuoto.Presumo che in quei compressorini ci sia dell' olio occorre sostituirlo come manutenzione. Grazie
What would happen if an Apollo astronaut was inside a vaccine chamber with the same exact suit he had on and same 5.2 psi inside the suit? But they seemed to have such a good time in their deflated suits with no complaints of atmospheric pressure or trouble breathing or hyperventilating, ever! Amazing!
It did it again... I typed VACUUM ... Ok now I hope it remains the same. Maybe someone should ask Buzz Aldrin to swear on the Bible he was in a vacuum and see if he can spell it.
Yet another awesome project from you! Great job on your vacuum jar it looks really well made! Thats a pretty massive AC compressor as well lol You certainly spend alot of time paying attention to detail :)
what material is the base made out of? I would imagine some sort of rubber to seal the gap, but when you put the bell on the base it makes a scratching sound that does not sound like rubber.
that is a great piece setting every school must have to visualize to kids to understand air, pressure and effects. One thing did you have chance the temperature of water after you took out glass chamber?? I know they do sterilize milk and kind of products under low pressure to save energy but would be good maybe leaving a thermometer in the water while you do the experiment.
I have a similar compressor from A/C unit which I plan to convert into a vacuum pump. Can I ask for a simple instruction on how to wire it? How do I connect the capacitor and its rating (is the capacitor necessary?). Thanks a lot.
could this compressor cool down the water or even freeze the water? I want to cool the water (making ice ) have you done something like that ? I want to try
I know this is an old vid but what did you aquire the pump from? I have a fair sized one that I can barely get the bubbles to break the surface and need to find one stronger so I could use it in degassing silicone for casting. Thanks for the vid
Thanks very much for the fast reply, I was actually not expecting one LoL awesome. Yeah mine came purposed from one I believe the same size but is also very old. I am going to try to swap out the oil and see if that makes any difference then if the sizes are comparable. Once again, Thank you :)
+Vevo Squeak He meant that they taught with crappy vacuum chambers or no vacuum chambers. We had one in my chemistry class but not as cool as this one.
There are lot of things government doesn't want us to learn we taught what they want us to be not what we want to be. Our mind is capable of limitless calculation but in our school we are program to think and act in a way they want us to be, to function their meaningless system, a form of control but that is my goal right now I want to teach deserving youth what life is all about. If you have religion better stay away from it, there is so much bullshit on it.
My eighth grade science teacher used a pump, table and cloche, very much like this one. He was also one of the coolest teachers ever. Early 90's in Indiana.
Really a very good made video! What kind of airpump are you using - looks like an old refrigerator compressor? Never saw such a model and it makes excellent vacuum. Mostly the do around 80 mbar - not much more.
So it seems an electric motor can operate in a vacuum but motors get hot and must be cooled down. How can it do that in a vacuum? I say this because I need to fabricate a 1.5" diameter SS tubing 6" long with a motor inside. The motor has a magnet mounted on the spindle so that it functions like a stirrer when the ends are sealed. However, I need to remove the ambient air inside the cylinder to prevent condensation since the cylinder will be exposed to cold temperatures for long periods of time. I also need to seal the electrical wiring exiting the cylinder. What kind of epoxy could I use that would seal it permanently?
+GnosisMan50 All motors in the vacuum overheats, not by chance that the motors are equipped with cooling fans. What you have to do you, I do not know all the details, but for sure it takes a minimum of cooling the engine.
+Roobert33 Thanks Robert. Realizing just how complicating my project came to be, I've decided to mount the motors outside the cylinder using a 90 degree gear set with a shaft running inside the cylinder. This approach is more mechanically involved but it would solve my problem far better than trying to vacuum seal the cylinder with a motor inside.
Actually, the boiling point of water drops drastically when you decrease the pressure. If you had left the pump on for long enough and then let the air get back into your chamber, you could have noticed water drops forming on your chamber when the water vapor condensed back into a liquid.
is it a normal glass or toughened glass that can sustain 0 bar? do you know other materials that can sustain such low pressure? what type of AC compressor is it? and how much power does it consume?
It is of Pyrex glass, they sell bells of glass or plastic suitable for making these experiments, see on the internet (bells vacuum). The pump creates a vacuum almost 0 bar. The pump was of an old air conditioner, those portable.
Electric Experiments Wow! I've been experimenting with a small static electricity gadget that needs to run in a vacuum. I made a simple chamber like yours, but my vacuum pump is just a little Harbor Freight pump that pulls to 28.3 in. of mercury. It does not seem to be enough of a vacuum. Would you be interested in a running a small experiment in your chamber if I mailed you a gadget?
Hi, thanks for your video. What would you say, how many hours or days could you have that vacuum in that chamber? I'm trying to build my own solar vacuum tube but having a hard time in finding a valve, which holds the vacuum for days and weeks.
When you saw the water look like it was boiling it was actually at room temperature when it was percolating. I sell equipment that uses that technique to chefs and its called Sous vide cooking, its French for "under vacuum". It opens the fibers of meat to allow the insertion of spices without the heat from temperature causing the meat to change structure. Cream sauces will not curdle using this process.
@@zwz.zdenek vacuum is only the first step. Second step is bringing the sealed sous vide bag up to safe temp or otherwise cooking the contents. If you often eat in restaurants, even fast food, I will bet you $1000 you've eaten much food processed by sous vide.
I think it would be interesting if one could put a metal plate beside a glowing filament under vacuum. I believe it would make low energy x rays. A section of unexposed b and w film could be placed in a metal container next to the experiment to study the pattern, or maybe some photo paper in an envelope. I think I've even seen some video camera sensors picking up x rays too. I wouldn't want to do that for very long, though.
A thing I know! Fridge or HVAC (that rotary compressor) compressors need oil to work in the refrigeration process. This constitutes a serial circuitery with the refrigerating system. To use it in such projects, what to do to make it working well whithout any risk to stick or jam these compressors in the case of oil loss? Did I can use such compressors without any worry of oil possibly loss? If it must never become empty of oil, what shall I do to ensure that the lubricant stays always in the compressor without losing any drop of oil? Thanks for your help!
For an efficient vacuum pump, it takes a rotary compressor of an air conditioner, which has at least 9000 BTU power. The compressors of refrigerators have little power to create a vacuum acceptable.. :)
"Electric Experiments" Roobert33 Thank you very much for your news! That's why I'm seeking for a rotary compressor as the one you have in your experiment! But, I want to know what to do with lubrification of such compressors used in HVAC applications that need oil constantly! On your side, how you deal with it? Did you add oil sometimes to ensure efficient lubrification to avoid possible stick up of the compressor?
Did you have used this compressor on long periods (more than 30 min) without any sign of overheat symptoms (burned oil odor)? So, I had already got a GE rotary compressor from an old air conditioner that worked great until this time I had to quit the shop to serve a guy while I had forgotten to unplug my compressor and once come back to the shop, the rotary compressor sticked up with heavy fumes of burned oil! Now, I want another one like yours but this time, I want the most clear informations about using such compressors in projects as a vacuum pump that will work more than sixteen minutes each time of use as a chip aspirator, remover on an artisanal record cutting lathe (on old CD's/DVD's) on what will cut about 1 min on 78 RPM, 3-5 min on 45 RPM, 5 to 8 min on 33 RPM and 20 min or more each side on low speed (16 RPM)! I want to be sure to use it without caring of oil to avoid bad surprises! :)
LHUPA The vacuum pump can not operate continuously for more than 5 minutes, it goes under stress. Of course, if the pump cools, you have a way to do many experiments..
Does it work on commercial jars such as gerber bottles to vacuum seal food? not mason jars but gerber jars and the like. Could you do some experiment on it? thanks
sweet setup using a rotary compressor!!
Very nice demonstrations and the filming is great unlike most videos done by weird people incapable of setting the camera straight.
This must be the first video on TH-cam I ever watched without stopping or pausing or rewinding or fast forwarding. This is what I consider a well made video.
Aleksandar Grozdanoski bro Same
You shoud see my experiment on my channel. It shows that adding CO2 to a lighting filament makes the filament dimmer, not warmer, hence refuting the supposed back radiant heat inducing effect of CO2. Radiation Greenhouse Effect is a lie.
Excellent video, many thx, that is how they must teach the young uns, not boring them to death.
Impressed how quite it is
So what your saying here (without so many words) is that resistance to wave propogation in any medium is proportional to inches of vacuum drawn...nice. The styrene was great way to demonstrate particle excitation upon repressurization. Subscribed.
anche se si tratta di principi fisici conosciuti , vederli applicati in questo esperimento e' sorprendente, veramente bello
"In space, no one can hear you at the door". That was one of the best videos I have seen on here. Fantastic job.
Ed Sipes
Awesome collection of all the classic vacuum physics demos. You have an extremely good compressor there. My refrigerator compressor only brought it down to about 1 psi. I would like to see if you can use the vacuum to make a radiometer. Hopefully some HV experiments too?
My eighth grade science teacher used a pump and table like this with a glass cloche to do demonstrations. The most memorable was his first demo with it. He claimed it was a fancy hot plate and bet the class he could drink boiling water. He won that bet. He then proceeded to do a lot of the demos here. Cool stuff.
I really enjoyed the sound of that school bell being snuffed out, it just felt right!
You taught me something today. Two semesters of college physics helped me explain what I was seeing. Kinda cool!
Excellent set of experiments. It would have been interesting to see vacuum gauge readings at various phases, for example, when the water 'boiled'. I'm planning to build a vacuum pump for vacuum bagging and low pressure distillation - the air-con compressor you show looks ideal for this.
Good test 👍
Way to go Roobert!!! I never get bored seeing your experiments..do try to speak into the mic as well once in a while, at least we can hear your voice too...keep up the experiments and also try to replicate the Testatika machine when you have the time...
what happenes if you put a mouse in there?
Nice variety of demostrations. Heck yeah !
I repurposed a dehumidifier compressor for a vacuum pump (not as big as your A/C unit on the video). I've used it for bleeding automotive brake lines that were difficult to either gravity feed or hand vacuum pump. It performed nicely.
I've always wanted to be able to get the dents out of my plastic bottles now I have a way to do it thanks!
Did you get those dents out ?
Thanks for the great video.
You're the best man !!!! :D
Make some experiments with the compressor + freon please!
Ótimas experiencias, o som não viaja no vácuo mas a luz se propaga com mais intensidade no vácuo.
Great video! Thank you!
This is very cool. You should make more vacuum experiment vids.
Yea wat he said
This video proves that vacuums suck and are not nothing as nothing cant do anything to objects within it!! Thanks!!
So many experiments are performed in this one video, it is helpful for my explanations with my children. An interesting video ever I have seen on you tube.
Could you please mention where you got the pump and where one might acquire one?
Really good!! I will use this clip in my classroom, it gives a good understanding about what air is and how things work without it. Especially the polystyrene balls and the bell!
Great demo! ! Where can one buy one of those vacuum globes?
Brilliantly exemplified.
What is the explanation of the fluorescing bulb under certain pressure in your last demostration? It started no light when it still in environment pressure, then started fluorescent, then it off again. What is the explanation about it?
Thank you! A great vid! As a refrigeration mechanic vacuum is a part of our day to day work. I'd love to see an ammeter fitted to the axial fan though, to see the effects of a frictionless environment on motor load. I'm guessing amp draw would fall....
you crazy man. but you have given me an idea to finily make my vacuum chamber. what have you used to stack the vacuum befoure you take air out?
Good video Sir
the part with boiling water was quite nice ignoring the fact that water vapors are damaging for the compressor
"Electric Experiments" Roobert33
No, you are mistaken. The boiling point of water changes in relation to pressure. This property is exploited in heat pipes. SCIENCE!
Adam Bailey I replied to that person that the water that bubbles in the video is at room temperature, I did not specify the details of SCIENCE.
i like how you say the water is bad for the compressor. as if running air through an airconditioning compressor is somehow not bad. (there is moisture in air)
MrEHoss well one thing is to have very small amounts of water vapors from air going inside the compressor and a big thing is to have only water vapors
MrEHoss
That would be refrigerant when it is installed in an air conditioner, not air. The air is cooled by passing it over a heat exchanger (the evaporator).
any ideas on best vacume pump for the price. Im on an extreme budget but need to be able to de-gas liquids for yeast culturing and counting ;)
This is awesome, but what compressor was used and how was this unit hooked up to work this way. Id be interested in making this ame set up to degass the silicone molds I use for casting resin scale model parts.
9:45 You could put a rubber hose on the compressor discharge and direct all that oil mist into the bottom of a plastic coke bottle packed with polyester floss from an old stuffed animal or sofa pillow. That would absorb all the oil, then you won't be breathing that nasty stuff and it won't cause pneumonia or lung damage.
Grazie Robert per aver condiviso con noi le tue esperienze . Stavo appunto cercando sul web dei consigli per creare una pompa per sotto vuoto.Presumo che in quei compressorini ci sia dell' olio occorre sostituirlo come manutenzione. Grazie
Infatti, bisogna sostituire l'olio come manutenzione, ma per fare un video di alcuni minuti non è necessario ;)
how many btu (9000 12000... ) had the air conditioner with this compressor ? and how much pressure u can expect from one of those . thanks
What would happen if an Apollo astronaut was inside a vaccine chamber with the same exact suit he had on and same 5.2 psi inside the suit? But they seemed to have such a good time in their deflated suits with no complaints of atmospheric pressure or trouble breathing or hyperventilating, ever! Amazing!
I meant VACCUM but the auto-correction changed it.
It did it again... I typed VACUUM ... Ok now I hope it remains the same. Maybe someone should ask Buzz Aldrin to swear on the Bible he was in a vacuum and see if he can spell it.
earth is flat my friend
KD35 durant wkwkwk
very interesting as always, your videos demonstrate principals that everyone should know, in the most interesting way. keep up the good work
You're awesome Guy! I want to build a vacuum pump with that type of compressor and I think that I have found the right guy!!!!
Brilliant Demonstration....
So when you makes a vacuum, you remove smell and dust from the subject, you put under vacuum??
Extremely interesting. Thanks!
+jolsky11 :)
how does aerosol spray behave in high pressure chamber ?
Yet another awesome project from you! Great job on your vacuum jar it looks really well made! Thats a pretty massive AC compressor as well lol You certainly spend alot of time paying attention to detail :)
Where can I buy this and does the little wooden look like chair heats up?
what material is the base made out of? I would imagine some sort of rubber to seal the gap, but when you put the bell on the base it makes a scratching sound that does not sound like rubber.
Archie11587
The base is made of wood often, the rubber is soft on the type, thickness 5 mm.
It's a great idea. Really I want to make this type of project. thanks for your nice idea. I will try to make according to your idea
that is a great piece setting every school must have to visualize to kids to understand air, pressure and effects. One thing did you have chance the temperature of water after you took out glass chamber?? I know they do sterilize milk and kind of products under low pressure to save energy but would be good maybe leaving a thermometer in the water while you do the experiment.
I have a similar compressor from A/C unit which I plan to convert into a vacuum pump. Can I ask for a simple instruction on how to wire it? How do I connect the capacitor and its rating (is the capacitor necessary?). Thanks a lot.
find the starting, running and the common terminal. common and running terminal is L1 and L2 your starting is hook to the capacitor...
could this compressor cool down the water or even freeze the water?
I want to cool the water (making ice )
have you done something like that ? I want to try
I know this is an old vid but what did you aquire the pump from? I have a fair sized one that I can barely get the bubbles to break the surface and need to find one stronger so I could use it in degassing silicone for casting. Thanks for the vid
The compressor that you see I dismounted from a domestic-type air conditioner. 9000 BTU
Thanks very much for the fast reply, I was actually not expecting one LoL awesome. Yeah mine came purposed from one I believe the same size but is also very old. I am going to try to swap out the oil and see if that makes any difference then if the sizes are comparable. Once again, Thank you :)
You built it from A to Z ? Have you got some plans? Would be very kind. :)
Why no one taught us like this in science class?
shity government standards.
You never learned about pressure and volume in chemistry? What state do you live in?
+Vevo Squeak He meant that they taught with crappy vacuum chambers or no vacuum chambers. We had one in my chemistry class but not as cool as this one.
There are lot of things government doesn't want us to learn we taught what they want us to be not what we want to be. Our mind is capable of limitless calculation but in our school we are program to think and act in a way they want us to be, to function their meaningless system, a form of control but that is my goal right now I want to teach deserving youth what life is all about. If you have religion better stay away from it, there is so much bullshit on it.
My eighth grade science teacher used a pump, table and cloche, very much like this one. He was also one of the coolest teachers ever. Early 90's in Indiana.
Interesting compressor how much power is it ??
Really a very good made video! What kind of airpump are you using - looks like an old refrigerator compressor? Never saw such a model and it makes excellent vacuum. Mostly the do around 80 mbar - not much more.
There will be any problem or not if rotary pump rotate wrong rotation, please advise
Extremely good way to compress plastic bottles for the recycle bin. Dose it work with cans to ?
Divine Werezwolf With the cans I have not tried
So it seems an electric motor can operate in a vacuum but motors get hot and must be cooled down. How can it do that in a vacuum? I say this because I need to fabricate a 1.5" diameter SS tubing 6" long with a motor inside. The motor has a magnet mounted on the spindle so that it functions like a stirrer when the ends are sealed. However, I need to remove the ambient air inside the cylinder to prevent condensation since the cylinder will be exposed to cold temperatures for long periods of time.
I also need to seal the electrical wiring exiting the cylinder. What kind of epoxy could I use that would seal it permanently?
+GnosisMan50 All motors in the vacuum overheats, not by chance that the motors are equipped with cooling fans. What you have to do you, I do not know all the details, but for sure it takes a minimum of cooling the engine.
+Roobert33 Thanks Robert. Realizing just how complicating my project came to be, I've decided to mount the motors outside the cylinder using a 90 degree gear set with a shaft running inside the cylinder. This approach is more mechanically involved but it would solve my problem far better than trying to vacuum seal the cylinder with a motor inside.
The pump seems to be very powerful. What the model did you have over there?
Very good video. Thumbs up. I like the variety of experiments shown. The only thing I would do different is add narration. Thanks for the video. 😃
two questions. what would happen if you were to put a small puppy in the vac. chamber?...and would you do it ????...
Well, it would be a horrible thing, it would explode due to the internal pressure of the body. Like astronauts without space suits.
Which connector do you use to obtain the vacuum and also transfer the energy?
The vacuum pump, I got it from an old 9000 BTU home air conditioner.
should be a subtitle at bottom for better understanding.
awesome job
Actually, the boiling point of water drops drastically when you decrease the pressure. If you had left the pump on for long enough and then let the air get back into your chamber, you could have noticed water drops forming on your chamber when the water vapor condensed back into a liquid.
Hey, did you check the ultimate pressure you can get ?
Is that a rotary compressor?
Very nice, man!
Can this bell jar be purchased somewhere? Else, do you have instructions for building? Thanks,
www.google.it/search?q=campana+di+vetro&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiqiur35bDRAhXq7oMKHS0iD7AQ_AUICCgB&biw=1536&bih=731
Very nice demo!
is it a normal glass or toughened glass that can sustain 0 bar?
do you know other materials that can sustain such low pressure?
what type of AC compressor is it? and how much power does it consume?
It is of Pyrex glass, they sell bells of glass or plastic suitable for making these experiments, see on the internet (bells vacuum). The pump creates a vacuum almost 0 bar. The pump was of an old air conditioner, those portable.
How to connect these wires with condenser to power? I have the same compressor from an old ac and I'm looking to use it to inflate tires
Is that a compressor from a large home ac unit or a window unit?
hed420 It is a simple compressor house from 9000 BTU
How long does the water boil for in a vaccume without turning to nice? Or does it stop when you stop vaccuming?
great demonstrations sir! 👍
Where did you took this huge glass bulb?
Intersting experiments. Nice job. Thanks for sharing.
This is a cooling-System Cpmressor from Copeland, right ?
+Electroimpex It is a compressor of an air conditioner for home use.
Great fun to watch. Thanks for posting.
What is your vacuum level in HG?
Almost close to zero..
Electric Experiments
Wow! I've been experimenting with a small static electricity gadget that needs to run in a vacuum. I made a simple chamber like yours, but my vacuum pump is just a little Harbor Freight pump that pulls to 28.3 in. of mercury. It does not seem to be enough of a vacuum. Would you be interested in a running a small experiment in your chamber if I mailed you a gadget?
stancurtin Yes, of course you can let me see your gadget :)
That's what she said.
Bellissimo Complimeti sei sempre bravissimo
doesn't water vapor hurt the insides of the pump? how do you change the oil in an old pump?
***** it is difficult to change the oil in the pump, it goes while it lasts.
Hi, thanks for your video.
What would you say, how many hours or days could you have that vacuum in that chamber?
I'm trying to build my own solar vacuum tube but having a hard time in finding a valve, which holds the vacuum for days and weeks.
+Seth Buchli www.google.it/search?q=ebay+valvola+per+il+vuoto&biw=1131&bih=692&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAmoVChMIpeb47rzWxwIVAnIUCh39HATn
Awesome Video!!!
The boiling water demo is so old, it is almost cliché but,
I never saw the demo with the Styrofoam balls before.
Amazing!
you know how to do the water
how do we know if there is no more air left in the chamber?
When you saw the water look like it was boiling it was actually at room temperature when it was percolating. I sell equipment that uses that technique to chefs and its called Sous vide cooking, its French for "under vacuum". It opens the fibers of meat to allow the insertion of spices without the heat from temperature causing the meat to change structure. Cream sauces will not curdle using this process.
But will it kill the germs? I wouldn't trust it. Unless you also irradiate said meat with Cobalt 60.
@@zwz.zdenek vacuum is only the first step. Second step is bringing the sealed sous vide bag up to safe temp or otherwise cooking the contents. If you often eat in restaurants, even fast food, I will bet you $1000 you've eaten much food processed by sous vide.
if isolated for that purpose, we could ear silence with a bell ringing, just there...that would be nice:)
Great excellent video.
How we can find the mass flow rate in this experiment
Cool video!
good friend . This compressor system to serve to empty fridges and airconditioning systems ?
+jose castillos
It was an air conditioner homebody from 9000 BTU
pls. tell me how much the hp of that compreessor and the capacitor microfarad....
Hi! Where do you get that glass "cap" for vacuum chamber? Thanks a lot!
Nicolò Pelliano www.ebay.it/itm/campana-vuota-di-vetro-campana-vuota-per-presepe-campana-presepe-/251742324362?pt=Hobby_creativi&hash=item3a9d03068a
I think it would be interesting if one could put a metal plate beside a glowing filament under vacuum. I believe it would make low energy x rays. A section of unexposed b and w film could be placed in a metal container next to the experiment to study the pattern, or maybe some photo paper in an envelope. I think I've even seen some video camera sensors picking up x rays too. I wouldn't want to do that for very long, though.
A thing I know! Fridge or HVAC (that rotary compressor) compressors need oil to work in the refrigeration process. This constitutes a serial circuitery with the refrigerating system. To use it in such projects, what to do to make it working well whithout any risk to stick or jam these compressors in the case of oil loss? Did I can use such compressors without any worry of oil possibly loss? If it must never become empty of oil, what shall I do to ensure that the lubricant stays always in the compressor without losing any drop of oil?
Thanks for your help!
For an efficient vacuum pump, it takes a rotary compressor of an air conditioner, which has at least 9000 BTU power. The compressors of refrigerators have little power to create a vacuum acceptable.. :)
"Electric Experiments" Roobert33 Thank you very much for your news! That's why I'm seeking for a rotary compressor as the one you have in your experiment! But, I want to know what to do with lubrification of such compressors used in HVAC applications that need oil constantly! On your side, how you deal with it? Did you add oil sometimes to ensure efficient lubrification to avoid possible stick up of the compressor?
LHUPA This motor does not need oil for maintenance, it is internally lubricated sealed.
Did you have used this compressor on long periods (more than 30 min) without any sign of overheat symptoms (burned oil odor)? So, I had already got a GE rotary compressor from an old air conditioner that worked great until this time I had to quit the shop to serve a guy while I had forgotten to unplug my compressor and once come back to the shop, the rotary compressor sticked up with heavy fumes of burned oil! Now, I want another one like yours but this time, I want the most clear informations about using such compressors in projects as a vacuum pump that will work more than sixteen minutes each time of use as a chip aspirator, remover on an artisanal record cutting lathe (on old CD's/DVD's) on what will cut about 1 min on 78 RPM, 3-5 min on 45 RPM, 5 to 8 min on 33 RPM and 20 min or more each side on low speed (16 RPM)! I want to be sure to use it without caring of oil to avoid bad surprises! :)
LHUPA The vacuum pump can not operate continuously for more than 5 minutes, it goes under stress. Of course, if the pump cools, you have a way to do many experiments..
Can you tell if it's possible to do a plasma globe with only vacuum, and if it works well? (Sorry for translation errors if there is, I'm from Brazil)
yes but it would be very dangerous as it could implode sending glass shards flying, and it would make xrays too
Whats the máx vacuum can be obtained in microns from a compressor of 6190 btu/hr ? Thanks jose
6190 BTU is little, but you can always do something with it.
Does it work on commercial jars such as gerber bottles to vacuum seal food? not mason jars but gerber jars and the like. Could you do some experiment on it? thanks
Fernando Lodroño It is not in program, I'm sorry :)