Explaining Superheat and Subcooling to Your Apprentice!
ฝัง
- เผยแพร่เมื่อ 15 มิ.ย. 2024
- In this HVAC Training Video, I Show How to Explain Subcooling and Total Superheat to an Apprentice. I Show Where the Measurements are Taken, Tips to Help You Remember, and What Exactly these Measurements Mean When Checking the Refrigerant Charge. I Explain Undercharged, Correct Charge, and Overcharged. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
Tools Used In The Video
Yellow Jacket Refrigerant Gauge Set - amzn.to/2aenwTq
Refrigerant hoses with valves - amzn.to/2aBumVI
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
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Related Videos:
The Refrigeration Cycle Explained Step By Step! th-cam.com/video/yjmrCEA1zIA/w-d-xo.html
Why Measure Both Superheat and Subcooling? th-cam.com/video/ADVMXANhoz4/w-d-xo.html
Total Superheat Method! th-cam.com/video/s9I1aVugdkY/w-d-xo.html
Superheat Charging Chart- How to Find Target Superheat! th-cam.com/video/bIL9BrKCujc/w-d-xo.html
Connect, Measure, Disconnect Procedure! th-cam.com/video/4oE3pkhJynQ/w-d-xo.html
Checking the Charge Tools:
Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq
Refrigerant hoses with valves amzn.to/2aBumVI
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Very good and useful.
Desperately need an answer. I am going crazy. ASSUMING a system is working properly can you determine the correct charge level with the sub cooling? In other words if you know the temp of the high line and the pressure of the high line can you determine if a system is properly charged assuming the outside temperature is reasonable. I know most systems only post the average temp. but.
i know Im asking the wrong place but does any of you know a way to get back into an Instagram account?
I somehow lost the password. I appreciate any help you can give me!
@Gustavo Keegan Instablaster :)
@Forest Ismael thanks so much for your reply. I found the site thru google and I'm waiting for the hacking stuff atm.
I see it takes a while so I will reply here later when my account password hopefully is recovered.
My entire first year class in 14 minutes. Your awesome.
That is awesome! Thank you for your support!!
lol
Did you at least get to hookup the gauges?
Wait...... It takes a year to learn this in school ??
I went to trade school, and have been in the field for six months, but I never fully understood Superheat or Subcooling. This video finally explained it in a way I understand. Thank you for making it.
Went in for an interview for a tech position years ago and the guy walked in and said "I just have one question: What method do you charge a unit?" I said, depends on your metering device, subcooling or superheat. He said, you're hired. Then he walked out of the room.
Was it for an apprentice job? I have an interview for a union for a 1st year apprentice and I’m watching this video I don’t know if they will ask me stuff like that but your comment makes me feel like it’s a good thing I am.
@@johnmattern6068 no I had already been a service tech for a few years so I knew just enough to be dangerous haha. They may ask you a question like that as well as other questions. If you don't know the answer, just say so. If you talk the talk, they will find out pretty quick if you can actually walk the walk. Good luck!
I lost a job not knowing this 25 years ago. I turned out alright though. Heh.
@@dgapp76 well said sir, to @John Mattern, remember this, you’re going in for an apprentice job. Trust me, they don’t expect you to know a whole lot. What you want to do is just like this dude said, be honest. I can tell you from experience, a good work ethic is worth TEN TIMESall the knowledge in the world. If you have a good work ethic, I can teach you anything you want to know about this industry. But without a good work ethic, and all the knowledge in the world, you’re just a lazy bum, nothing more. Good luck to ya buddy, I’m sure you’ll do well… or should I say, I’m sure you did well. One thing I LOVE about these unions, they’re not satisfied with making you a limited journeyman. When they get done with you, you’ll be a master of this trade. Congratulations, make the most of it…
Just takes a little bit just to be dangerous.
I have to rewatch this at least 5 times to really understand what you're saying, but you do an excellent job. Thanks
I was able to have auto problems with a/c. It has the same parts. A few difference, big or small unites, txv is diffferent looking. . Concept the same,
These guys aren't lying. Spent 2 yrs of night classes and didn't learn this. You were born to teach and share/pass on knowledge to others. Thank you for taking the time to do it.
This video alone is enough to convince me to spend $68 on the book. Well done.
Thats so encouraging, thanks!!!
@@acservicetechchannel just put my order in on Amazon and binge watching your content in preparation for starting a new HVAC job this month. Thank you!
how’s that going im studying right now my grandfather and dad, both Do air-conditioning down here in Sarasota Florida. One of my grandfathers clients is stephen king out on bird key
@@Rangobine I learned this book inside and out as fast as I could. I also learned his mini split book, manual D, and a bunch of others. Working as a selling technician for one of the top companies in my city making about $9-$10k a month.
You have no idea how much this has helped me. Fantastic explanation. Thank God for techs like you.
Glad to hear it!
Out of all the channels/videos on TH-cam regarding HVAC walkthroughs, yours is by FAR the absolute best. I really appreciate what you're doing here with this channel and am happy to see there's ads. Thank you for the amazing content and wisdom.
Wow, thanks!
This is some great info, God Bless You. Your channel so helpful. This planet needs great people like You.
I purchased both the hard-copy book and the e-book. Fantastic indeed. This video reminds me to re-read the book since warm weather is coming. If you don’t do this very often, you forget some things. The book is a perfect refresher. Thanks Craig, and keep up the great videos. I always look forward to watching them all!
Yeah summer is coming for sure! Thank you very much for your note!
I have scoured all of TH-cam just to find out what you demonstrated here. Most educational videos assume that you know what saturation and subcooling and superheating are and go at a quite fast pace from one topic to another. If I buy anything, it's going to be from you. Thank you for taking the time and not assuming that people know things that they don't. Great work here!
Jeff that's so encouraging thanks!
This video is 14 mins long but I took 2 hours to finish it. Not ashamed to say that I’m taking it in word for word. You’re a good man thank you for the video.
Wow, you really want to learn and thats great!!!
This is a confidence builder. Listen apprentice don’t rely on your journeymen to teach you this. Ive purchased the book, it is awesome plus watched his videos. The best teacher Period. Thank you for posting.
Thank you very much Nickle& Dimez!
I love this explanation I’m a contractor and I will use a similar way of explaining it to my trainees
This was, by far, the least convoluted explanation I've gotten on this subject. I can finally understand the concept after way too long overthinking it and getting nowhere when someone else tries to explain it. Thanks a ton! I came here hoping for a little clarification and found a whole new way of thinking about it. The simple, yet in depth explanation was perfect!
Wow. I'm blown away. I finally after so many years understand subcooling and superheat. I don't know why but I've had a hard time understanding what they both meant...even after taking a refrigeration course 15 years ago! I got my universal 608 at that time but I'm not a technician. I just took the class to learn about refrigeration. I recently started watching videos again and tried to understand once again the difference between subcooling and superheat. And now I totally understand because of this video. Great explanation!
I have done HVAC 20 years as a lead maintenance for apartments and couldn't grasp the concept of superheat and subcooling until watching this video too!! I feel you bro.. It's like I leveled up in a video game..
Outstanding explanation. A lot of info covered in an easy to understand manner. Thank you.
This video explains the concept of superheat and sub-cooling very clearly and accurately. Very good job! It just clarified my mind on this subject
Thats awesome to hear and if you want to see more visuals, check out the free articles on superheat and subcooling at www.acservicetech.com/articles thanks!
I am impressed with your teaching abilities. Great job.
Great explanation as always. Even though I know this already it’s always nice to have a refresher on how to properly explain it to someone.
Thanks a lot rev!
I just don't do enough HVAC to stay at expert level. But of course that's what your employer expects.
I played this video for both of our apprentices today, great explanation thanks for posting the video!
That's awesome, thanks HVAC Doc!
Just stated HVACR school and my teacher recommended this channel thank you.
Sweet, I just ordered the cards, you got a sub, thanks for making our job easier
Thanks a lot Younis, please let me know what you think of them after you receive them!
Your videos are very thorough and simple to understand. 👍
Craig you are the best hvac guy on you tube I’ve been following you for a couple years now I learned so much from your videos
Wow, thanks!
I am an electrician and, this was a damn good video. I now kinda understand refrigerant. I bet if I watched it again id understand even more. Lots of terminology, which i want. Because that is how the hvac world speaks. Love it.
Lot of info and well explained. Thanks for sharing valuable information.
Thanks a lot Juan!
Incredible speech! Short easy words to understand. Coherence in thinking and so easy to follow your mind and highly comprehensive comprehend!!! Thank you very much.
So great to hear that you valued the video, thanks! Make sure to read some of the articles on superheat and subcooling on our website at www.acservicetech.com thanks!
excellent explanation, Craig. You are an asset to our profession! thanks for sharing!
I appreciate that! Thank you for your support!
this is the best way of explaining the meaning of the Subcooling and superheat ,thank you !
Glad you liked it!
Thanks for the very detailed explanation. It made Superheat and Subcooling very clear to me after watching a couple of times.
Awesome to hear and check out our full length articles on superheat, subcooling, and delta t at our website at www.acservicetech.com thanks!
You explained that flawlessly, well done!!
Thank you!
Another great video.... I purchased the book a few weeks ago. It's an easy read and has a lot of good information.. 👍🏾👍🏾
Thanks a lot piz11!
I thoroughly understood everything you said here but I just ordered the book because I want to be able to teach it as well as you. Awesome video! Keep it up! Thank you!
Very cool Michael! Please let me know what you think of the book after ordering it!
Great videos, very helpful for beginners techs like me.
Thank you AC service
Just ordered your manuals. Just took great notes. Thanks.
Good Job Bro, very proud of you and how you explained everything
The best video to understand SH and SC
thank you for sharing your knowledge with us on every video for free. 👍
Thank you for these video's and guides. You have been a blessing!! Thank you!!!
Thanks for putting the procedure in a nutshell!!!
I love these vids..great explanations, no fluff. Keep it up!
Much appreciated!
This is an extremely helpful and well produced video. Thank you!
I'm glad you enjoyed it!
This is incredibly useful information thank you for sharing!
Best description yet !
Wow Craig that's the best definition of "saturated" that I've ever heard!
Previous explanations just explanations just told me it was a mixture of liquid and vapor. You clarified that at this point it is not changing temperature. but only changing phase. For 12 years since Tech school I have understood super heat and subcooling but "saturated" has been sort of vague.
Thanks again for the excellent videos and I highly recommend your book and cards to anyone reading this!
thermodynamics requires a good explanation unless you are a genius. I was supposedly an A-student, but I still really didn't understand it well enough to remember it for very long.
As an engineer, but former tech, I enjoy watching such videos (usually the result of researching test equipment though). Overall, good explanation, just might have started with definitions of terms first (but that is just more preference in presentation). As mentioned in the video, or to make it more clear…
The temperature of the refrigerant decreases during the desuperheating and sub-cooling processes, but remains constant during the condensing process itself (gas to liquid, or as in the video the “saturated section”). The energy rejected from the refrigerant heats the secondary medium (copper or aluminum), whose temperature thus increases. However, The refrigerant pressure changes little from desuperheating to subcooling (think compressor to service valve). In a similar way to evaporation, the only pressure difference between the entrance and the exit of the heat exchanger is just the pressure drop (the equation is: pressure equals temperature times volume - which explains why your car tire pressure only changes with heat, but is the same wether mounted or not). Also, because the flow velocity in a condenser decreases, the induced pressure drop is much lower than in an evaporator. In other words, the pressure is rather stable throughout the high-side and low-side environment (between condenser and the expansion valve / orifice and vise versa).
Another key thing to remember, is that phase change is what takes the most energy (yet pressure is still rather constant). Thus, most heat is transferred during the condensing process (that process which is after desuperheating but before subcooling). Another mental tool I use to think of saturation is relating it to the opposite as in precipitation of say minerals from water; boiling water causes dissolved solids to precipitate (due to temperature change).
Great work! Very informative and easy to understand!
Glad it was helpful!
This is so mind blowing and great video!!!
I am really glad you appreciated the video! That kind of info was what I tried to put into the book, the procedures and the why and why not, step by step instructions. Thanks for your note!
Very understandable and concise. Thanks
Best video on TH-cam explaining this thanks
Glad it was helpful!
Excellent explanation
Great instruction thank you. I love your manual by the way.
Very good explanation . Thanks
you are excellent at teaching learning more with you than in school I thank you a lot I have learned a lot with you
Glad to hear that!
Great explanation Craig.God Bless.This is a refresher for me, am currently retired. But keeping touch helps me to undetstand better.
May The Lord Bless You Too Kenneth, thanks!
exactly the explanation i needed. An explanation looking at a diagram just doesn't click. Having the gauges and condenser there and instructing how it would be done in the field is much better.
Cant recommend this book enough. So simple to read and understand. Im not a tech so I dont service hvac systems enough to have this material become second nature. I read it last year, but forgot some stuff by this year. I decided to read the book again (something I would normally never do), and found it just as enjoyable as the first time i read it.
very educative.Thank you regards
thanks, partner for sharing! love all your videos! top-notch!!!!.
Thanks a lot Jimbola77!!!
Great explanation
As an apprentice this channel has saved
me thousands
Stone, I really appreciate you letting me know! Make sure to read the articles I wrote as well at www.acservicetech.com thanks!
This is Great, thanks a lot from Venezuela. 🇻🇪👏👏👏👏👏
Thank you very much Argenis!
Can’t wait to finally start in this field
Super understandable video i appreciate this
Thank you very much for the explanation. Very helpful.
Glad it was helpful!
this video helped me a lot to understand the superheat and subcooling, well explain
Glad to hear it!
I’m an auto tech, when we had HVAC out at our house one time I was talking to the tech about the HVAC I deal with and he said it’s similar but completely different. I can see he was 100% right.
Great video!!! Keep them coming, top notch!!!
Thanks a lot Luke! Will do!
excellent explanation!
Knowledge you gain more when you share your knowledge to everyone.thank you for sharing this wonderful knowledge to us..it's very useful for being a hvac technicians. ..
Awesome, thanks big bite!
Your welcome sir.
Thanks for the explanation.. I just ordered the book 📕 👍
Hope you enjoy it!
Great video man very understandable
Thank you so much for the information.
Future service technician in the making here. Thanks for the invite to like your page on Facebook. I find your videos useful and have learned from this video. I'm very much blessed and appreciate this video 🙏🏼
That's awesome to hear Dustin!
Thank you explaining this.
Glad it was helpful!
Gary your are really good Teacher. Your Video reminders me of Chrisfix an Automotive DYI TH-camr also has the similar voice and rhythm.
Great information, thank you for sharing!
Seeing ur video for the first time. Great job of explaining to an old fart like myself. So i liked, i shared, and subscribed. . Thanks man.
Lewis, thanks so much!!!
Perfect Excellent Very Very informative video 👏👏👏👍👍👍
Thank you for watching!!
Great video! Thanks for the knowledge!
Glad to help!
Excellent Description .. thanks
You are most welcome
The best example of Cooling.
Thanks a lot Angel!
I'm so glad I found this video so can learn how super heat
Glad you liked it!!
Best video on this topic that I seen yet
Thank you for your support!
Really excellent explanation
Thanks.
Glad it was helpful!
This is Gold!!
great explanation of a common but relatively complicated topic. i bought the book
Glad it was helpful!
Learned more pointers from this video then college. Thank you sir.
Thanks for watching! You can learn more on my website, www.acservicetech.com/resources
@@acservicetechchannel Looking now. Interested in putting a split unit in my home. More familiar trouble shooting & installing boilers then AC units so I'm doing my home work using your channel. Extremely helpful. Any manufacture recommended units (3-4 zones)
Thank you!
Great videos man I really enjoy all this information ....👍👍👍👍😀😀
Thanks a lot Jesus!
Thank you so clear
Glad it was helpful!
sir, good morning thanks you for your good work
Great job and video
Glad you enjoyed it
Great video buddy I have the books and cards and they are great 👍
Thanks a lot for taking the time to write this note! Awesome!
Very helpful!
Great video
Just bought the books on amazon thanks.
Awesome! Please let me know what you think of the book after reading it!
Great video! Very informative 👍
Glad it was helpful!
Best video ever
This was useful as I'm a bit rusty or perhaps rusted. I have other responsibilities that I deal with like plumbing and electrical and haven't recovered refrigerant in a long time.