You made this so easy to follow with the perfect amount of repetition and using varying terms. Every person in the US should understand the basics of refrigeration. Very cool southern drawl too!
I am pure electrical engineer having least amount of knowledge of refrigeration cycle, in short I started my refrigeration career from this lecture of yours, you did the job beyond the excellence SIR. Appreciated.
I was really struggling to understand the entire process but this video has helped me so much to start understanding it... I will watch it repeatedly until I fully understand... thank you very much...
I know this video is 7 years old, but thank you for sharing your knowledge! You helped me understand latent and sensible heat much better. Very professional and easy to understand.
Super heat ..super ocurs when that vapor is heated above its boiling point lets saythatvvrefrigerant boils at40 dreerss ata low pressure in the evaporatorthe vaporized refrigerantis con elevaingits temperature to become a 50 degree vapor....t inuously heated .elee
Cycal total compent compessor conesr e met dves expsin .evapare ..extr. poited super het occurs when that vapor is heat above is t boiling poit let say that refrigenat boilin 40 dgree at a low drgreein th evapore...
Explas ..what doees super heat men and what cuses ammonia to becomd suer heated in the evaporater coils ..pressure and temperure of sturated ammonia have a definite relation ship . Thetemperure corresponding to a prssure of 20 psi is 5.5°f.this should be the temperatureof gasitleaves the evaporator coils buta thermometer in the discharge line may show a temperatureof 8or10°f.tjediffereanceis superheat.....if we couldremove the gasas soonasitformef.giveing it nochancetoremaininthe coils and pickup heat we would not have superheatatthispoit apoorlyinsulated suctionlinealso helps superheatthe gasbutitis impssible to eliminate super heat entrely.....?))))
Bacical kinetic therory heatresult of vibberting energy moleecules of substance as heat is resul boling poit charted ps c charted bacl terminology used in refrigertion absolte humidty . Weight cubic .7000grains equals 1b. Air bound air trapped inpiping equipmentetc.. ambent temperature ....anhydrous .back pressure othe suction psi .. brine ...refrigereration systom ... calloreie ... chilled water c...syom... chilller .Aheatexchanger... chiler lored ......... cohefficentof performance ...cooling medium a fluiedused picking up heating drgreeheat exchanger ....total cystomm more detal fee shorted poiterd
24:58 - I agree. Even at this point in the video he has to tie his refrigerant hoses in an overhand knot just to get the correct gauge to match his drawing! I will say, though, at least he has the discharge line going into the top of the condenser and the suction line coming out of the top of the evaporator coil which you don’t often see in other drawings (even hvacrschool sometimes gets the piping backward in some of their whiteboards).
on a regular day I would have to pay a lot of money for a class 1/2 as good as your video. for many years I have been looking to understand how ac works. your video did it in 1/2 an hr. I am grateful for it. the class I took in college was not even one 100th as good or detailed as your video is.
Excellent video. Love the way the refrigeration process is illustrated in a simple but complete manner. The terminology is also explained in a concise and easy to understand way. I have watched several videos but this is the only one that has managed to illustrate the basic workings in a complete yet simple way. Thank you!!
Absolutely a great video. Trouble shooting if condenser fins become restricted with dirt/ grass or fan stops what temp rises to at metering device. Also on low side, if return air filter is clogged and not enough air flow through the evaporator. I have seen air registers closed in 4 rooms with a 5 ton unit and customer doesn't understand why the A coil is freezing up. They will tell you, I am not using the rooms, so I shut off the air flow to save on electricity. The opposite happens, coil freezes up, the rooms needing cooling are not receiving air and the compressor never shuts off. Allergy filters will cause more trouble than they are worth just from restricting air flow. This is one of the best videos I have seen on you tube with a piston/orifice devise.
Thanks for the compliments. I have a tip for checking for clogged condensers. Some condenser coils have an overlap design. Dirt and trash will collect in the center (due to the overlap and the fins don't match up) and won't be seen on the outside. You'll need a flash light shining back through the coil to detect the obstruction. Also on the allergy filters. They are rated by something called a MERV rating. What they don't tell you is that they become so restrictive they kill the air flow and the evaporator freezes up. they aren't cheap and require monthly maintenance but an electronic air filter is the best way to go.
Quite informative, thank you. I'm an electrician who only occasionally works on HVAC, but the time you spent to explain the temp/pressure relationship was very helpful.
Basics r Refrigeration is thescienceofproducingand maintainingtemperaturesbleowthatof the surrounding at mospher.thismeans theremovingoftheheatfromasubstancetobecooled heatalways passesdown hill.froma warm bodyto a cooleroneuntilboth bodies areatthe sametemperature maintaing perishables attheirrequired temperatures isdoneby refrigeration .notonly perishables buttoday manyhuman work spacesinoffices and factory buildings are air.condionned andarefrigeration unit the system this chapter of basics will helpyou understand whathappens inside your refrigeration equipment.. how funa mentals how did we cool objects before the invention of refrigeration making cold depends ona few simple principles .such as that heat al ways flows from a warmer to a cooler body never the reverse .thus to cool a warm objectvvbefore refrigertion was invented humans placed material tob be cooldnear objeactlikea bllock of natural ice orheat provived our firstcooling mrthod .and surface evaporation kept watercoolin thevold fashinnef canvas watercan us time het comeing het is from of enwrgyand measurbls temperature mostcomonly used is dereefahrem heat bace °fone dregreefarherheatis 1/180of differnce bet wen th boiling poit if waterand melting poitof iceunder standred at monspheric pressure onth fahern heatscales boiling of water is 212°meting poitis 32°othe tempperraturescles centigigrade celsius scale boiling poit 100°and 2the reaumur on tackn O°and boiling .80°stillother scles useing defernt temprs defrnted poinrt Heat =heat ,BTu ..w=weight |b..s=specific heat .t¡original temperature °f.t2=final temperature .°f...ex ampls how much heat is need to raise the temperature of 200/bof buttwr from 40to 82 °f...h=wst2-t1)=200×0.64×(82-40=200×0.64×42=5376Btuof heat rquired ans .....this formula...)?..
EXCELLENT!!! This video alone has saved me HOURS of watching other mediocre videos! Thank You! The only thing I need to find now is how you got 35 degree application to 10 SEER and how the Rh affects the numbers
+Gary Barbour II Subtracting 35° from the indoor air temperature is used for standard efficiency equipment (10 SEER). Subtract 30° for high efficiency (12 SEER and up). The moisture in the air, humidity, acts as a load on the evaporator due to the change of state. The evaporator operates below the dew point so any vapor moisture that comes in contact with the evaporator condenses to liquid and leaves in the condensate line. Absorbing the latent heat to condense the moisture is additional load on the system.
Thanks cool cat that's the best explanation of basic refrigeration I heard of since I started refrigeration. Just what I needed to get back to the basics!!!
Thanks that was really helpful. I understood and read/ watched videos on the refrigeration cycle but i was confused on super heat vs highly super heated. Highly super heated is a cool concept
Your explanation about the refrigeration cycle is amazing I've been in school long time ago but I have not understand things the way you explain them thank you very much I am keep watching your video over and over again thank you much
Thank you so much for you calm explanation about HVAC basic system, I just started taking this course and I just found it a little difficult for the language, but with people like you Sr help us to understand much better. Muchas gracias! And keep teaching and sharing your knowledge.
Best video ever one thing that would be really cool if you made these with examples of how the system would look with high charge, low charge, with faulty fix metering device/txv that would be great
+Dean Scholl It is possible but may be more trouble than it is worth. Technically the oils are not fully compatible due to miscibility ratio's, probably not enough to matter. (The amount of oil absorbed into the refrigerant vapor.) A significant efficiency loss due to improper metering device either fixed orifice or TXV so the metering device would need to be changed. There would also be loss of efficiency due to the different vapor volumes so that means the compressor would not be compatible. Look into some replacement refrigerants designed for R-22 systems I think you may find that a better route for your change over. I can't help but wonder when I hook onto R-410a on a hot day with a dirty condenser why the engineers didn't try a little harder getting the 134a to work.
this is my favorite video explaining this. other guys talking too fast. finally - a normal dude teaching this here. thank you
Great video 8 years later its still helping people !! Thank you !!
Outsdanding presentation. A very complex process that has been thoroughly explained using simple and easy-to-understand language.
You made this so easy to follow with the perfect amount of repetition and using varying terms. Every person in the US should understand the basics of refrigeration. Very cool southern drawl too!
Thank You!
I am pure electrical engineer having least amount of knowledge of refrigeration cycle, in short I started my refrigeration career from this lecture of yours, you did the job beyond the excellence SIR.
Appreciated.
Nice, un-rushed, comprehendable, informative, very well presented education... many thanks Dude.
I was really struggling to understand the entire process but this video has helped me so much to start understanding it... I will watch it repeatedly until I fully understand... thank you very much...
Thank you!
I know this video is 7 years old, but thank you for sharing your knowledge! You helped me understand latent and sensible heat much better. Very professional and easy to understand.
Super heat ..super ocurs when that vapor is heated above its boiling point lets saythatvvrefrigerant boils at40 dreerss ata low pressure in the evaporatorthe vaporized refrigerantis con elevaingits temperature to become a 50 degree vapor....t inuously heated .elee
Cycal total compent compessor conesr e met dves expsin .evapare ..extr. poited super het occurs when that vapor is heat above is t boiling poit let say that refrigenat boilin 40 dgree at a low drgreein th evapore...
Explas ..what doees super heat men and what cuses ammonia to becomd suer heated in the evaporater coils ..pressure and temperure of sturated ammonia have a definite relation ship . Thetemperure corresponding to a prssure of 20 psi is 5.5°f.this should be the temperatureof gasitleaves the evaporator coils buta thermometer in the discharge line may show a temperatureof 8or10°f.tjediffereanceis superheat.....if we couldremove the gasas soonasitformef.giveing it nochancetoremaininthe coils and pickup heat we would not have superheatatthispoit apoorlyinsulated suctionlinealso helps superheatthe gasbutitis impssible to eliminate super heat entrely.....?))))
Bacical kinetic therory heatresult of vibberting energy moleecules of substance as heat is resul boling poit charted ps c charted bacl terminology used in refrigertion absolte humidty . Weight cubic .7000grains equals 1b. Air bound air trapped inpiping equipmentetc.. ambent temperature ....anhydrous .back pressure othe suction psi .. brine ...refrigereration systom ... calloreie ... chilled water c...syom... chilller .Aheatexchanger... chiler lored ......... cohefficentof performance ...cooling medium a fluiedused picking up heating drgreeheat exchanger ....total cystomm more detal fee shorted poiterd
I've seen many videos about A/C and this one is the best explanation on how A/C works !!
24:58 - I agree. Even at this point in the video he has to tie his refrigerant hoses in an overhand knot just to get the correct gauge to match his drawing! I will say, though, at least he has the discharge line going into the top of the condenser and the suction line coming out of the top of the evaporator coil which you don’t often see in other drawings (even hvacrschool sometimes gets the piping backward in some of their whiteboards).
Hi--I'm not HVAC---I'm just a female homeowner that chooses to learn so that I can be an informed consumer. Thank you for this excellent video
Thank you :)
Great video, first week HVAC student, really helped me understand the refrigeration process, thanks so much !!!
on a regular day I would have to pay a lot of money for a class 1/2 as good as your video. for many years I have been looking to understand how ac works. your video did it in 1/2 an hr. I am grateful for it. the class I took in college was not even one 100th as good or detailed as your video is.
Julian Cruz Thank you :)
Very much appreciated and thanks from a hvac company in🇹🇿🇹🇿TANZANIA
Thank You!
One of the best videos on this cycle. Thank you.
Excellent video. Love the way the refrigeration process is illustrated in a simple but complete manner. The terminology is also explained in a concise and easy to understand way. I have watched several videos but this is the only one that has managed to illustrate the basic workings in a complete yet simple way. Thank you!!
Excellent presentation.
If this was a class I am sure there would be a well deserved round of applause at the end.
Thank you sir.
Thank You!!!
Absolutely a great video. Trouble shooting if condenser fins become restricted with dirt/ grass or fan stops what temp rises to at metering device. Also on low side, if return air filter is clogged and not enough air flow through the evaporator. I have seen air registers closed in 4 rooms with a 5 ton unit and customer doesn't understand why the A coil is freezing up. They will tell you, I am not using the rooms, so I shut off the air flow to save on electricity. The opposite happens, coil freezes up, the rooms needing cooling are not receiving air and the compressor never shuts off. Allergy filters will cause more trouble than they are worth just from restricting air flow. This is one of the best videos I have seen on you tube with a piston/orifice devise.
Thanks for the compliments. I have a tip for checking for clogged condensers. Some condenser coils have an overlap design. Dirt and trash will collect in the center (due to the overlap and the fins don't match up) and won't be seen on the outside. You'll need a flash light shining back through the coil to detect the obstruction. Also on the allergy filters. They are rated by something called a MERV rating. What they don't tell you is that they become so restrictive they kill the air flow and the evaporator freezes up. they aren't cheap and require monthly maintenance but an electronic air filter is the best way to go.
Quite informative, thank you. I'm an electrician who only occasionally works on HVAC, but the time you spent to explain the temp/pressure relationship was very helpful.
Thank you, I have always said that if a person liked 9th grade science class they would love HVAC. The P/T for me stops just short of being magic.
Basics r Refrigeration is thescienceofproducingand maintainingtemperaturesbleowthatof the surrounding at mospher.thismeans theremovingoftheheatfromasubstancetobecooled heatalways passesdown hill.froma warm bodyto a cooleroneuntilboth bodies areatthe sametemperature maintaing perishables attheirrequired temperatures isdoneby refrigeration .notonly perishables buttoday manyhuman work spacesinoffices and factory buildings are air.condionned andarefrigeration unit the system this chapter of basics will helpyou understand whathappens inside your refrigeration equipment.. how funa mentals how did we cool objects before the invention of refrigeration making cold depends ona few simple principles .such as that heat al ways flows from a warmer to a cooler body never the reverse .thus to cool a warm objectvvbefore refrigertion was invented humans placed material tob be cooldnear objeactlikea bllock of natural ice orheat provived our firstcooling mrthod .and surface evaporation kept watercoolin thevold fashinnef canvas watercan us time het comeing het is from of enwrgyand measurbls temperature mostcomonly used is dereefahrem heat bace °fone dregreefarherheatis 1/180of differnce bet wen th boiling poit if waterand melting poitof iceunder standred at monspheric pressure onth fahern heatscales boiling of water is 212°meting poitis 32°othe tempperraturescles centigigrade celsius scale boiling poit 100°and 2the reaumur on tackn O°and boiling .80°stillother scles useing defernt temprs defrnted poinrt
Heat =heat ,BTu ..w=weight |b..s=specific heat .t¡original temperature °f.t2=final temperature .°f...ex ampls how much heat is need to raise the temperature of 200/bof buttwr from 40to 82 °f...h=wst2-t1)=200×0.64×(82-40=200×0.64×42=5376Btuof heat rquired ans .....this formula...)?..
Comprssar cndesar
Best presentation I’ve ever seen on this subject. Thank You.
EXCELLENT!!! This video alone has saved me HOURS of watching other mediocre videos! Thank You! The only thing I need to find now is how you got 35 degree application to 10 SEER and how the Rh affects the numbers
+Gary Barbour II Subtracting 35° from the indoor air temperature is used for standard efficiency equipment (10 SEER). Subtract 30° for high efficiency (12 SEER and up).
The moisture in the air, humidity, acts as a load on the evaporator due to the change of state. The evaporator operates below the dew point so any vapor moisture that comes in contact with the evaporator condenses to liquid and leaves in the condensate line. Absorbing the latent heat to condense the moisture is additional load on the system.
By far the best explained overview of a refrigeration cycle; you are a master instructor
This is by far the best video explanation I have found in the web. Great job Cool Cat ;)
Henry Vasquez Thank You :)
Jorge Marrero Thank you :)
Great video! Easy to understand and at a pace you can comprehend. Loved it!
Thank You!
a lot of thanks of this video. i passed my interview :)
Reynjun English what question were you asked during your interview.
THIS IS THE BEST VIDEO ON TH-cam!!!!. NO OTHER VIDEO HAS EXPLAINED THIS SUBJECT BETTER!!!!
GREAT... VERY ...VERY... NICE....THANKS A LOT ...YOUR PRESENTATION MEANS YOU ARE A MASTER.... FROM MEXICO.... THANKS AGAIN
+miguel arizmendi Thank you! I appreciate the compliment.
A whole lot better to understand than how my instructor is trying to show me. Thanks for you help!!!
:) Thank you :)
You know your Basic Refrigeration my man, it was a pleasure getting a refresher course from you. I love your accent! Bless your soul, my man!
Thanks cool cat that's the best explanation of basic refrigeration I heard of since I started refrigeration. Just what I needed to get back to the basics!!!
The best tutorial on a/c system. Thanks for sharing your knowledge Sir. God bless your heart.
Thanks, I appreciate that.
Excellent presentation, especially for the layman. Thanks!
Most informative video I've found on this subject.
Thank You!
This is the best explanation I have seen on TH-cam!
Love your video! You have a great way of teaching. Your students are very lucky to have such a wonderful teacher!
Thank You!
Best video, Im a visual and audio learner when it comes to theory.
WOW, Best simplified explanation I have heard. Thank you very much.
Thank You!!!
Thank you so much with this video! This was the missing puzzle piece for me to understanding the refrigeration cycle!
Thank You!
Great video and easy to understand the whole way through...... I will refer back to this video many times..... Thank you
Thank You!
@@coolcathvacrtrainingvideo9906
How can I get your emai address please ?
Great job explaining the refrigeration cycle. I will watch a few times and maybe I'll get it.
Thank You!
Thanks that was really helpful. I understood and read/ watched videos on the refrigeration cycle but i was confused on super heat vs highly super heated. Highly super heated is a cool concept
By far the best explanation video on refrigeration cycle!
Your explanation about the refrigeration cycle is amazing I've been in school long time ago but I have not understand things the way you explain them thank you very much I am keep watching your video over and over again thank you much
Thank you a lot fo your efforts and efficiency to have this lesson.
Awesome video and easy to follow, thank you!
great job
Best hvac teaching tool video on youtube
Thank You!
Very well explained- thank you
Thank You!!!
Thank you, I watched this as a review for my upcoming exam. It was an excellent video.
nice work.Thank you,from greek hvac technician working in Athens.
Very informative and simple to understand.Thanks a lot!!!
SergiyS. Thank you :)
Thank you so much for your time . I enjoy your time and and your skills
Thank You!
kool vid dude...Perfect for me to refer to... me being a recent HVAC graduate.
No doubt, super super explanation, he has strong knowledge, salute Sir
Simple and clear teaching, love this video thanks for sharing.
Thank You!
Thank you so much for you calm explanation about HVAC basic system, I just started taking this course and I just found it a little difficult for the language, but with people like you Sr help us to understand much better.
Muchas gracias! And keep teaching and sharing your knowledge.
Thank You!
You are the best,fantastic explanation.
Thank you, I'm glad it was helpful. :)
Awesome video. Going to school for this. Thanks
Thank You, good luck with your schooling.
thanks for the video, very helpful.
Thank you very much for this video. It's plain simple and easy to understand. Thanks again. Great job!
Thanks for the very informative explanation,very good.
thank you for all of your help
thank you very much, am looking forward to seeing more of your presentations. nice job
Super easy detailed explanation at an easy going pace. Thank you!
Thank you :)
thank you, for your good presentation
God Bless Sir! Well Explained! and Understandable! Looking forward for your next informative videos..
Extremely well
Presented thank you
This presentation was very helpful.
Excellent !!!!!!
Make more videos like this.
Thanks
Best video ever one thing that would be really cool if you made these with examples of how the system would look with high charge, low charge, with faulty fix metering device/txv that would be great
I completely agree, we need a some real life repair scenarios but until then great video man👍👏🙏
Thank you for teaching me this principle of a.c. It's very easy to understand.
Wow! Fantastic. Thank you sir!
ivioto Thank You :)
Sent you a message. Cheers!
Great Video And Clear presentation on the refrigeration cycle....thank you
Excellent video. I will keep it as the reference for practical AC cycle
Thank you!
FANTASTIC,,,thanx a lot my friend...your a GOD's gift...very helpful...
Thank you Mr Cool Cat you are the best I hope to see more videos soon
Thank you :)
Great information and detailed explanation. Thank you so much!!
Holy thank you so much. Was struggling with this doing my third year millwright apprentice. Just couldnt really picture it, but this helped so much =)
+RFMN Thank you :)
Thank you for the very well explanation about the Cycle of refrigerant
Very understandable
Very nice presentation, I've learned a lot. There will be more.
wow that was food for the brain, thank you very much i appreciated that.
one of the great video with detail and easy to understand thanks
Thank you :)
the best video I've seen yet, thanks.
What an awesome explanation!
Hello teacher!thank you for the esplanation,i wonderstood mutch better,you are a professional iceman,God bless you.
Thank You!
Well done, thank you. From complex to simple.
Awesome video to understand easily...with proper details and guidance....thanks a lot....
Excellent explanation!!!! 👍
Thank You!
Fantastic informative video.
Mister thanks for sharing your knowledge
Thank you for the knowledge. Well explained and easy to follow.
Excellent presentation . Thank you for sharing the knowledge .
That was awesome illustration thank you!
Extra ordinary presentation sir .thanks a lot.Thank you very much.
thanks a lot, i was looking for a video like this. i hope you share more like this. very good explanation.
perfect explanation....thank you!
Very good presentation.......
Excellent video - thanks for the help, and looking forward for more.
Very good explanation.
Thank you.
Great explanation.
Refrigeration cycle made simple
Thank You!
First class explanation 👏👏👍👍🙏🏽🙏🏽
best video on the subject!!
+Dean Scholl Thank you :)
I want to learn more..
And is it possible to convert a r22 system to 134a...and if not..why
+Dean Scholl It is possible but may be more trouble than it is worth. Technically the oils are not fully compatible due to miscibility ratio's, probably not enough to matter. (The amount of oil absorbed into the refrigerant vapor.) A significant efficiency loss due to improper metering device either fixed orifice or TXV so the metering device would need to be changed. There would also be loss of efficiency due to the different vapor volumes so that means the compressor would not be compatible. Look into some replacement refrigerants designed for R-22 systems I think you may find that a better route for your change over. I can't help but wonder when I hook onto R-410a on a hot day with a dirty condenser why the engineers didn't try a little harder getting the 134a to work.
I was thinking that the compresser would be the major problem..thanks for the reply...
MISTER...you should be working for NASA fixing all their freaking problems what a video excellent
Thank You!!!