HVAC 114 Refrigerant blends, glide, bubble, dew, zeotrope, azeotrope

[@kwiz8848]

My opinion the best hvac/hvacr instructor 👍

[@peterv2306]

You explained a whole section in my textbook that I could not understand. Thank you very much. It makes so much sense now.

[@jhuh1758]

king of clear explanation

[@JohannnesBrahms]

You are gifted at making complex principles clear. We are grateful.

[@JohnnyJr396]

Ty I hope people looking for hvac/r info find your videos. You by far are the best source of info and are the best teacher on the net. I hope you become the main source of info on YT for people learning this trade. Put a venmo or PayPal link so people can show can at least by you a cup of coffee or donate a small amount in appreciation for your time and effort.

[@love2hvac]

Thank you very much for that! I will be setting up a donation method by next week. Thank you!

[@samsmith854]

Better explanation than any of my teachers could give me. Thank you so much Ty.! It’s been awesome working and having such a good knowledge even as an apprentice. Seeing everything in the field makes more sense to me.

[@adamedwards2435]

Not sure if you completed a lab on latent heat transfer but this will greatly help you understand the theory of the refrigeration cycle.

[@danwittels5542]

Good explanation 👏

[@AngelRodriguez-qg5zq]

You're amazing Ty 👏🏻👏🏻👏🏻 Thanks 🙏🏻

[@kidpont7648]

Finally I have a understanding of the blends bravo Ty you never cease to amaze! Thank you Ty

[@kenlyndaniel2692]

i my self did this topic during my course ,never understood it as clear as Mr TY explained it thank you

[@AlmarbadiT]

I am not a Hvac technician but I have thought to get a program in Hvac ... I have learned a lot of Ty ... appreciating .

[@REFRITEKREFRIGERACION]

You are the best Ty. Great job, thanks for the videos. I thought I understand this but now I'm 100% sure that I do understand it, really need this video.

[@love2hvac]

Thanks I'm still learning new stuff every day. Stuff I thought I new I discovered a new angle. What a great career it is.

[@johnson554671]

You have a lot of great information to share for studying EPA 608. I wish I could give you 2 thumbs up. Thanks!

[@salvatoreaccorinti135]

Fantastic explanation

[@backwoods_legit7066]

The best video I have seen on this subject matter! Thank you!

[@davidmorrone8783]

As always "awesome job explaining". Recently i came across these terms:glide, dew, bubble, zeotrope, azeotrope and my first thought was "OMG! this is going to be difficult. In 28 minutes you helped me to wrap my head around this subject matter leaving me with a clear understanding of whats going on here. 28 minutes: from understanding nothing to understanding something in a subject that could be considered complicated. Not greek to me anymore. I bow before you. Thank you sir!

[@jeffreybricks2687]

You made this very simple thank-you 👏 👌 BEST VIDEO I'VE WATCHED TODAY ((5 stars))

[@nicholasdidier4188]

What I can learn at 1 in the morning from you Ty. I ❤ HVAC/R

[@idontwantachannelimjustcom7745]

The dew point in weather is the temperature in which water condensates out of the air onto a car or grass.

[@love2hvac]

That's correct. If you look at a blend of refregerants in the condenser. It's where the refregerants would just starting to condensed, change state from a vapor to a liquid.

[@kentuckyhillbilly455]

Thank you sir for this. I have never understood this in a clear way. I just new that they were blends, and can be a pain in the rear. I use 404a and some 407c now there is some new weird ones coming out. I miss the 22 and 134a. This is the stuff that makes the difference between a technician and a parts changer.

[@love2hvac]

Thank you. 22 was a great refrigerant. I will be making some videos on 32 and 452B before long.

[@robertling9872]

Thank you for sharing your knowledge 👍

[@charlieromeo7663]

Fantastic job explaining this content. Thank You.

[@leandrobrandao1789]

What a great video. Thank you!!

[@fathmasameer7523]

Well done sir 👏

[@chicagohavoc]

U r #1, A++++ would watch again.

[@tpcoachfix]

Great job explaining. Thanks.

[@yonasweldekidan2077]

Ty you are awesome.keep doing what u doing

[@Samlol23_drrich]

Great video. Just wanted to mention, it might make remembering easier. Zeotropic and azeotropic are the same exact word, except one has a prefix “a” which means without, like asexual or amoral. So zeotropics have chemicals that act differently , and azeotropics are the opposite of that, they act the same.

[@srikanthammu3465]

Sum words are not understanding, but I am poor in foreign English,but you are my trainer sir 🇮🇳

[@bangtwister]

Thanks for the clear explanation 👍

[@mike-yp1uk]

Interesting info.

[@Gary-ts6dh]

13:15 - 1. Below saturation heat must be added to the refrigerant to form the first _bubble_ of vapor (to begin boiling). Enough heat is then added to the refrigerant is then added to get all vapor. (superheated vapor - bubble point) In a pot of water heat is added to form the first bubble (bubble point temperature). 2. Above saturation heat must be removed from the the refrigerant (subcooled) to form the first drop of _dew_ (to begin condensing). Enough heat is removed from the refrigerant to get all liquid. (subcooled liquid - dew point) When the temperature of the air goes below the dew point temperature, the first drop of condensate forms on the outside of the metal duct (dew point temperature).

[@MikaelS1977]

When i whent to school here in sweden we learnt that a refrigerant that ended with a capital letter it is a blend! So R134a is not a blend but R404A, R410A ...... are blends. To make it easy, if it ends with a capital letter charge the system in liquid form. Greetings from sweden

[@love2hvac]

100% correct!

[@OIC-es6pi]

Great 👍 job.

[@realestateservicessaleshea99]

Thanks always informative! 🍺🍺🍺🥃🥃🍿🏌🏻‍♀️ Stay safe. Retired (werk'n)keyboard super tech. Wear your safety glasses!

[@MorganBW53]

Thank you for this. It gave me validation on my thoughts about this.

[@timsky99]

regarding temperature glide, I remember it as b comes before d, so bubble is the first saturation point and dew is the last . Not sure about superman and submarines lol

[@love2hvac]

What ever it takes to remember it. Submarines start way before this. I found most students struggled with how to find superheat and subcooling. They think the "cold line" should be subcooling because it was cold. So the subcooling submarine and subcooling song comes in to help them remember that. Since they already have that down earlier in the class it's easy to add for bubble and dew.

[@onemoremisfit]

Based on what he says here about the glide of 410a being so small, I'd say as long as you shake the jug a little during the process you should be able to charge 410a without turning the jug upside down and still have the job turn out OK.

[@love2hvac]

That's correct but there is really no benefit to charging as a vapor. It takes much longer and there is always the possible risk of fractionation.

[@onemoremisfit]

@@love2hvac I saw a video of a guy charging 410a with the jug upside down, and he had to tease it in by opening the low side manifold valve in short bursts because you can't just let the liquid flow continuously, and since there is no way to know if the intermittent bursts of liquid are getting a full chance to boil to vapor in the line, you are just playing it by ear. I'd say there is some risk in this too. I do understand that it speeds the job up when you tease it in as liquid intermittently because that's what I do with cars and it's generally safe because cars have accumulators and the low side shrader is usually located before the evaporator so the refrigerant passes thru the evaporator and the accumulator before reaching the compressor. I even did it once with R22 on my 24 year old home system when I was topping off the charge and it was taking too long, so I picked up the jug and sloshed it sideways a few times while watching the low side gauge carefully. People will probably say I was foolish to do that, I don't know, but it was years ago and the compressor still runs fine, I have thermometers in the air handler right below and above the A coil and the system makes a delta T of 21 or 22 all summer long, runs like a champ, it only needed a top off after 20 years of service. I don't see anybody charging R22 with the jug upside down. Does anybody ever turn the jug upside down and tease it in with R22 to speed it up? I'm not a tech so I wouldn't know, I only know what I see on You tube lol.

[@love2hvac]

I charge as a liquid even with 22. Throttle it in. Every video with charging I show how to throttle it in. Very short burst. By the time the refrigerant flows across the valve it expands and boils into the suction hose. The it's restricted threw the low loss fittings and again by the valve core. It then enters the larger suction pipe where it expands to a larger suction pipe. The compressor will be fine. It's not nearly as close as automotive and the shell of the compressor can accommodate very small amounts unlike automotive. When dealing with other 400 series refrigerants, like 407C, the glide is larger and it will fractionate charging in a vapor. You can also get a sight glass for the suction hose to see if it turns to a vapor before it gets to the suction pipe. You can also open and close the tank valve to allow more time and hose length to allow the refrigerant to expand to a vapor. You by a restrictor that slows the flow in called a liquid charger.

[@onemoremisfit]

@@love2hvac Thanks for the info. I'm going to look at your charging videos.

[@robinfrancis2911]

Great video...slightly confused! for example....R407c is reputed to carry aprox 6k Glide. How is this calculated?....using the example in the video.....R407c average/mean at say 2 bar(g) = R32 = -27.62 deg C SAT + R125 = -22.98 deg C SAT + R134a = 0.79 deg C SAT. Added up and divided by 3 gives around 16K.....naturally I'm wrong somewhere!.....anybody point out exactly where ?......appreciated. 🙂

[@love2hvac]

When refrigerants are mixed the boiling point for all the refrigerants in the mix change. Chemical manufacturers have to test the new mixtures. They determine that above the dew point they are all a superheated vapor. Below the bubble point they are all a Subcooled liquid. The mean will be the average temperature between the bubble and dew point giving an idea for the coil temperature for TD calculations. This is also why it's important to not mix Refrigerant in the field. Even if they have similar saturated temperatures separately, they will have completely different saturated points mixed. Without the multimillion dollar lab, there is no way to know what the new dew, bubble or mean point is of the new mixture.

[@bobh6728]

EDIT: Should have watched the whole video before making my comment below. Interesting double negative that I never thought I’d see in discussion HVAC. Zeotropic comes from the words for boiling and change. So it means boiling change or different boiling points. Then azeotropic adds the negative prefix meaning not different boiling points. So non-azeotropic is not not different boiling points.

[@love2hvac]

I agree! So great know others know the meaning of the words! 😁

[@GlenS123]

Teach as well and pronounce them the same way you are doing.

[@pixelupdates7041]

Talka too fast