Why water and refrigerants boil when they do.

[@estivel15]

Julio, this explanation about how the refrigeration cycle works has been more enlightened than the 2 months of HVAC class I have taken this semester. Thank you. I know what each component of the refrigeration does, but I didn't undertand how it did it in relation to pressure.

[@AirConAcademy]

Wow! Thank you so much for your kind words! I'm glad you liked the video and if you get a chance, look at my other videos I have several videos on the refrigeration cycle, heat pump cycle and different components. If you just go to my KZbin channel aircon Academy you might find other videos that might help you. Thank you for watching!

[@JoeCanella]

Thank you

[@AirConAcademy]

I'm glad you liked the video! And thank you for watching!

[@nasserahmed583]

Thank you for sharing. Excellent demonstration!

[@AirConAcademy]

Thank you!!!

[@boongoon92]

I needed this more then you could understand thank you for your brother may your life prosper

[@AirConAcademy]

You're welcome! I'm very glad you'd like to video. Check out my other videos. And my website, airconacademy.com I like teaching I really enjoy it and I'm glad I could help!

[@Leo3T]

Thank you! This is a huge help with my HVAC class in my local community college.

[@AirConAcademy]

I am so glad that I could help! I use these videos in my classes sometimes for the students. that's why I make the videos so I can help more people. Thank you for watching!

[@brianferrero9544]

This was great!

[@AirConAcademy]

Thank you so much! And thank you for watching! I'm very glad you liked the video!

[@Artisan.HVACR1]

Sir, good lesson you are teaching. I remember back in my HVACR trade school days we were taught in HVACR 101 class that the boiling point of a liquid and the pressure exerted on that liquid have a "directly proportional" relatiinship.

[@AirConAcademy]

I'm not quite sure what you mean but let me say this. When you increase the pressure boiling temperature is also going to increase. Like it would in a pressure cooker. When you lower the pressure boiling temperature drops. In the video I am boiling water at room temperature and that is because I have dropped the pressure enough so the water boils. With this video I was trying to show what happens in a refrigeration system when there is moisture inside and the lower the pressure. The water/moisture will reach a boiling point as the pressure drops in the vacuum pump is going to remove the water vapor. So I guess you could say that they are directly proportional. When you lower the pressure the boiling temperature drops and when you increase the pressure the boiling temperature increases. I hope this makes sense and thank you for watching!

[@Artisan.HVACR1]

@@AirConAcademy Yes, you are correct in your description. Your description is what "directly proportional" means in my original comment. I stated it the way I did because that is the way it was stated in my HVAC/R trade school manuals back in the 1990s.

[@gageblevins2026]

How did you install the fitting into the jar lid? Id like to make one of these

[@AirConAcademy]

I just drilled some holes and sealed it up with some brass fittings. I had one before where I used a torch and soldered the fittings on. I'm glad you liked the video and thank you for watching!

[@leevega9235]

Very nice video. I'm making a super heater to power a steam engine at around 200 psi. I don't want to spend money on 600 feet of tubing. Can I just lower the pressure in a closed system and get high pressure

[@AirConAcademy]

No, I do not believe lowering the pressure will work. I am not sure if you will be using steam pressure to move a turbine, but when I was in the navy we used 1,200 pounds of steam to rotate the turbine. This was a close system and we needed the higher pressure. Remember you need to transfer the heat more efficiently so look at the materials you are using. I mean in your boiler, you need something that will transfer heat better but be able to handle the high temperatures and pressures. We used firetube boilers, this heated the water very fast and more efficiently. we also needed a steam drum to collect the steam and then we send it to the superheater. We needed it superheated because of the turbine. we could not have saturated steam going to it because of the speeds the turbine was rotating. I am just explaining what we did to give you ideas. if you are using a turbine you will need the proper angle on the nozzle and on the vanes of the turbine. THAT will make a big difference. I hope it helped. like I said not sure what you are using so I was just imagining what you might have there. Good luck!!!! and thank you for watching!!!!

[@leevega9235]

@@AirConAcademy thanks for the reply. I was thinking more of a water tube mono tube boiler like a doble steam car. As that's what I'm trying to do push a car. I was wondering in a closed Lupe if I vacuume the lines so that the water boils and expands at lower temperatures using less surface heated area. I had head that there are steam generators that use refrigerant instead of water for lower boiling temperature

[@AirConAcademy]

@@leevega9235 hi, I saw your message before but I have been thinking about it. I have an idea as to what it is that you're trying to do. I don't believe that boiler that uses refrigerant is going to work. Those I believe are electric. I'm not sure, but I think you are going to be using wood or something that burns to heat up the water and turn it into steam. I don't know how big this car is going to be but if you lower the pressure and you have a leak which can easily happen (because of vibration and such), then you are still looking at erasing the temperature to 212°F. I don't know how deep you have looked into this. But you will most likely need some kind of reduction gears so you can get the turbine rotating fast and convert that speed into torque. I don't know if you will be able to get the pressure high enough to rotate some kind of a turbine and move a car without a reduction gear being used. I think I have seen people make cars that run off of steam but typically they use a mechanism like on the older steam engines. Meaning that there's a piston that they pressurize and get it to move. Good luck and let me know how things are going. Or if you have any other questions, I think you have an interesting concept!

[@richardderenkowski3070]

Perfect, thank you for your help!!!!!!

[@AirConAcademy]

Thank you! And thank you for watching!

[@davexcal6043]

Wait you can boil water without hot? Sorry, it really confused me

[@AirConAcademy]

Hi! Yes! As you can see in the video, I am boiling water at 70°F! To do this you lower the pressure in the vessel and as it absorbs heat from the surrounding area, it boils. I don't know where you are, but if you are in an area that is approximately at sea level water boil at 212°F. You are up in the mountains. The water will boil at a lower temperature. If you are approximately 5000 feet above sea level water will boil at 203° because the pressure is lower. This is how the refrigeration cycle works. The metering device will lower the pressure and because of that we can have refrigerant boiling at approximately 40°F. because the compressor compresses the refrigerant and the pressure we can make the refrigerant from vapor to liquid, in other words, we can get it at a temperature of approximately 120°F, Fahrenheit, Fahrenheit. So to answer your question yes we make water boil by lowering the pressure. Thank you for sending your question in, and thank you for watching!

[@Dev1.0]

Great video man thanks

[@AirConAcademy]

I'm very glad you liked it! And thank you for watching!

[@NelsonLukwago-hr4vw]

Wow thanks so much😊

[@AirConAcademy]

I think this is something that most people do not see an interesting to show! Thank you, and thank you for watching.

[@melusingcobo1735]

Hi sir why theris foaming in oil in ac compressor eg. 8 cylinder bitzer compressor

[@AirConAcademy]

If you see foaming in the site glass, that means that refrigerant is mixed in with the oil. If the compressor is running and you see foaming while the compressor is running that means that you need to check your superheat. Most likely you are getting liquid back to the compressor. If the foaming only happens on start up then you need to check your crank case heater if you have one. This means that liquid refrigerant is mixing with the oil and on start up it boils the refrigerant out of the oil. Both of these could cause the compressor to fail! I hope this explains your question.! Good luck and keep learning and asking questions!

[@alwysrite]

nice, needs to be taught or demonstrated in schools too !

[@AirConAcademy]

Thank you!!! That is how I teach i class!!!

[@samortiz2890]

amazing

[@AirConAcademy]

Thank you!!!

[@anirudhparashar3222]

Sir I've some querie I want to know why water boiling temp is +100 degree and why Refrigerant (R-32) boiling point is -52 . Please explain

[@AirConAcademy]

Different liquids have different, boiling temperatures! Water like you said boils at 100°C and 212°F. By changing the pressure we can change the boiling temperature as I did in the video I made it boil at approximately 70°F. Alcohol for example, boil at approximately 180°F. or 82°C. It is just a chemical make up of the liquid that makes it boil at different temperatures. That is why they use different refrigerant for different applications, like in an air conditioning, systems, or freezers. The refrigerators have a different refrigerantthen the AC unit and the refrigerant boils at different temperatures so we can have a 40°F evaporator coil in an AC unit or a -20°F evaporator coil in a freezer. I hope this makes sense. And I hope I explained it so you can understand it. Thank you for watching!

[@phillichillin1716]

You’re a legend

[@AirConAcademy]

Thank you so much! I appreciate your comment! Keep watching and keep learning!

[@JaykeSapalaran-iq3qs]

🫡 salute 🫡 sir thank you for sharing your knowledge and experience 🇵🇭♥️ Always keep safe and in good health everyday 🙏❤️🇵🇭

[@AirConAcademy]

Thank you so much and thank you for watching! You stay safe, also!

[@JaykeSapalaran-iq3qs]

@@AirConAcademy ❤️🇵🇭🫡

[@johnricsolayao7799]

❤️❤️❤️

[@AirConAcademy]

Thank you!!!

[@peterta1003]

Hello Teacher Julio

[@AirConAcademy]

Hi, I hope all is going well with you! And thank you for watching these videos! I hope they help some.

[@UltraHydrophobiccoat]

Were you in the Just for Laugh? kzbin.info/www/bejne/ipTRiZKwbp1kaJI

[@AirConAcademy]

HA HA HA!!!!! lol that was funny!!!! no it is not me. you gave a good laugh!!! Thanks!!!!

[@UltraHydrophobiccoat]

Aircon Academy I learned a lot of basic HVACR knowledge from you. When I watched that video and saw that guy who is so like as you I remember you immediately. Thank you so much Sir for sharing your professional knowledge and your time and efforts🙏

[@AirConAcademy]

@@UltraHydrophobiccoat I am so glad that I could help! And thank you for the video they got me a good laugh! Good luck out there and keep learning!

[@marchingforchrist]

❤️❤️❤️

[@AirConAcademy]

Thank you!!!