How to evaporate/liquify acetone using peltier element?

Hello,

I’m Georgios Grigoriadis and I’m trying to build a machine which could evaporate acetone and the liquify it. I want to use the Peltier element. My questions are:
1/ Is it possible to heat a metallic bowl, using the Peltier element, in order to to evaporate the liquid inside it (acetone) ?
2/ After having evaporate the liquid ( in my situation is acetone) I want to take the vapor from a tube to a metallic closed container, on which ( from the outside side) will be stuck a Peltier modules. Is it possible, using the Peltier module to freeze the container in order to liquify the (acetone) vapor?

I also want control the temperature of the Peltier element but also how many time the Peltier module will work. Do you think that it is possible to use the Peltier modules in order to do that I want? If not what do you propose me ?

Thank you very much for your interest and for any help.

(I’m sorry if my English isn’t perfect ;), if something is very difficult to understand, don’t hesitate to tell me)

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jfryar3027217 days ago

That would work very well. The amazing thing about Peltier elements is that they work by transferring heat, rather than transforming it. Thus, one side of the element gets warm while the other cools down. You now have the ability to heat up and cool down the acetone.

To measure temperature, you have a few options:

First, you could attach a small thermistor to the face of the element, and read the temperature from that.

Second, Peltier elements are good at transferring heat as well as measuring it. You may have to get a control circuit, but from there it shouldn't be too hard.

Good luck!

Using peltier elements is a fine idea. The low power rating/wattage of peltier elements means that you will only be able to boil a small amount of acetone at a time. That is fine. It will make the project easier at first and then you can make a bigger, fancier evaporator/liquifier after you get the small one working. The things you need to be able to do is

1. Boil acetone (not hard, it boils quicker than water)

2. Collect the steam and let it liquify. You don't even have to use a fancy metal tube. You can use a simple plastic garbage bag and let the steam liquify inside of that.

See this instructable: https://www.instructables.com/id/Garbage-Bag-%252b...

GeorgiosG1 (author)  avocadostains28 days ago

Thank you for your respond.

Do you think that if I use for example 3 Peltier elements, I would could evaporate/liquify more acetone?

What other technology coul I use to liquify and evaporate acetone?

Thank

Go with these. https://www.ebay.com/itm/12V-60W-Thermoelectric-Cooler-TEC-Peltier-Module-with-Heatsink-Kit-TEC1-12706-US/192142241559?epid=711620169&hash=item2cbc91ef17:g:aPwAAOSwuspY9M1P:sc:USPSFirstClass!45840!US!-1
Offer the seller 4 or 5 dollars. See if he takes it, or just pay full price.
Now that I think about it, A 'heatsink' is also a 'coldsink'. Its just a larger surface area of metal, which has good thermal conductivity, be it for heat or cold.
To liquify, also known as 'to condense' evaporated anything, you could use a 'solar still'. https://en.wikipedia.org/wiki/Solar_still

It would have to be very well sealed to prevent the acetone from escaping and you would want to use plastic sheeting that acetone did not dissolve. It will not dissolve #2 or #4 plastic. I'm not sure about the other plastics. If you dig a big enough hole in the ground, the cool, wet earth may be all the cooling you need. It will work better on a sunny day.
Of course more peltier elements would be more powerful. The thing about using them to heat is that if you don't cool the other side, they are not very efficient because the side that is supposed to be cool heats up. If you have a free source of heat, then you have basically a very efficient cooler, as long as you keep the two side separated.
If you have a free source of cold, the same thing applies, you would have very efficient heating. Peltier element would be very efficient for example to use in refrigeration during the winter time, because the cool side could be place in the fridge and the hot sot could be on top of the fridge with a heat sink attatched, to heat the room.
There is no such thing as a 'cold sink'. Except cold air or water. If you can make sure the cold side stays in contact with cold air or water, you would have a very efficient heater on the other side as long as you could keep it separated/insulated from the cold side. you may even be able to use liquified acetone to help the cold side stay cold.
I though about using acetone to dissolve styrofoam so that it the plastic would shrink down and then recyling styrofoam would be economical because you could transport a lot more weight at a time than if if you were transporting styrofoam.
The only thing missing from my setup was the ability to recover the liquid acetone from the dissolved plastic. Keep me updated on your project. I know that peltier elements can be bought very cheaply off ebay.com

If anyone wants to read the previous discussion of this question, on this same forum, from like two weeks ago, it can be found here:

https://www.instructables.com/answers/How-to-heat-...

GeorgiosG1 (author)  Jack A Lopez1 month ago

thank you very much for your help. I’m new in instructables and I didn’t know that my question was answered, I didn’t have any email.

You had the answers last time you asked the question !

No point using Peltiers to heat things, unless you use one to heat, the other side of it to cool, and at least another device for cooling along, or you can't win.

GeorgiosG1 (author)  steveastrouk1 month ago
Thank you very much for your answer. I’m sorry but I thought that the question was deleted.

But if I use two Peltier elements? One to hear and ont to cool.
I thought about Peltier elements because I think that it is easier to handle the temperature and also that the temperature grow faster. If it is wrong what I m saying, what will be the better system to heat something? But I want to control the temperature and to grow from 10 Celsius to 80 Celsius in maximum 5 min..

You need to put some parameters in there. I can heat a pin head of material from 10 to 80C in a couple of seconds. I can't heat an oil drum full of it with the same amount of energy, or if I apply the same amount of power, within the same time