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.
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 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.
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 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.
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!!!
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.
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
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
Awesome video! One other way of understanding the "compressor" stage temperature increase is the piston head acts like a "giant ping pong paddle" to the refrigerant particles, from their perspective "slamming into them" and so imbuing the molecules with more (kinetic) energy
Nice presentation I have been struggling with my interview's hope this will help, the explanation its easy to for my understanding keep up the good work
The only thing to improve this would be to include the practical example at end onsite at a home measuring and concluding on a few working and non working units. Then my life is complete. Thank you kind sir.
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 !!
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.
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!
Outsdanding presentation. A very complex process that has been thoroughly explained using simple and easy-to-understand language.
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
Great video, first week HVAC student, really helped me understand the refrigeration process, thanks so much !!!
Great video! Easy to understand and at a pace you can comprehend. Loved it!
Thank You!
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).
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 :)
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
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!!!
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 :)
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.
Very much appreciated and thanks from a hvac company in🇹🇿🇹🇿TANZANIA
Thank You!
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 :)
a lot of thanks of this video. i passed my interview :)
Reynjun English what question were you asked during your interview.
Best presentation I’ve ever seen on this subject. Thank You.
A whole lot better to understand than how my instructor is trying to show me. Thanks for you help!!!
:) Thank you :)
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!!!
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!
One of the best videos on this cycle. Thank you.
Love your video! You have a great way of teaching. Your students are very lucky to have such a wonderful teacher!
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
Thank you so much with this video! This was the missing puzzle piece for me to understanding the refrigeration cycle!
Thank You!
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.
The best tutorial on a/c system. Thanks for sharing your knowledge Sir. God bless your heart.
Thanks, I appreciate that.
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
Excellent presentation, especially for the layman. Thanks!
Best video, Im a visual and audio learner when it comes to theory.
THIS IS THE BEST VIDEO ON RUclips!!!!. NO OTHER VIDEO HAS EXPLAINED THIS SUBJECT BETTER!!!!
nice work.Thank you,from greek hvac technician working in Athens.
Great job explaining the refrigeration cycle. I will watch a few times and maybe I'll get it.
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!
kool vid dude...Perfect for me to refer to... me being a recent HVAC graduate.
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👍👏🙏
This is the best explanation I have seen on RUclips!
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
Awesome video! One other way of understanding the "compressor" stage temperature increase is the piston head acts like a "giant ping pong paddle" to the refrigerant particles, from their perspective "slamming into them" and so imbuing the molecules with more (kinetic) energy
Great point!
Thank you, I watched this as a review for my upcoming exam. It was an excellent video.
By far the best explanation video on refrigeration cycle!
WOW, Best simplified explanation I have heard. Thank you very much.
Thank You!!!
No doubt, super super explanation, he has strong knowledge, salute Sir
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 very much for this video. It's plain simple and easy to understand. Thanks again. Great job!
Awesome video and easy to follow, thank you!
great job
thank you for all of your help
Most informative video I've found on this subject.
Thank You!
Excellent !!!!!!
Make more videos like this.
Thanks
Very informative and simple to understand.Thanks a lot!!!
SergiyS. Thank you :)
Simple and clear teaching, love this video thanks for sharing.
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 ?
This presentation was very helpful.
Super easy detailed explanation at an easy going pace. Thank you!
Thank you :)
Thank you for teaching me this principle of a.c. It's very easy to understand.
thank you, for your good presentation
Best hvac teaching tool video on youtube
Thank You!
Nice presentation I have been struggling with my interview's hope this will help, the explanation its easy to for my understanding keep up the good work
Good luck and thank you.
FANTASTIC,,,thanx a lot my friend...your a GOD's gift...very helpful...
thank you very much, am looking forward to seeing more of your presentations. nice job
Excellent presentation . Thank you for sharing the knowledge .
Great Video And Clear presentation on the refrigeration cycle....thank you
thanks for the video, very helpful.
God Bless Sir! Well Explained! and Understandable! Looking forward for your next informative videos..
MISTER...you should be working for NASA fixing all their freaking problems what a video excellent
Thank You!!!
Thank you a lot fo your efforts and efficiency to have this lesson.
Very nice presentation, I've learned a lot. There will be more.
Thank you so much for your time . I enjoy your time and and your skills
Thank You!
Thank you for the very well explanation about the Cycle of refrigerant
Very understandable
Hello teacher!thank you for the esplanation,i wonderstood mutch better,you are a professional iceman,God bless you.
Thank You!
You are the best,fantastic explanation.
Thank you, I'm glad it was helpful. :)
Extra ordinary presentation sir .thanks a lot.Thank you very much.
Thank you for the knowledge. Well explained and easy to follow.
Awesome video to understand easily...with proper details and guidance....thanks a lot....
Thank you Mr Cool Cat you are the best I hope to see more videos soon
Thank you :)
That was awesome illustration thank you!
Wow! Fantastic. Thank you sir!
ivioto Thank You :)
Sent you a message. Cheers!
Very well explained- thank you
Thank You!!!
Excellent video. I will keep it as the reference for practical AC cycle
Thank you!
Excellent video - thanks for the help, and looking forward for more.
Thanks for the very informative explanation,very good.
thanks a lot, i was looking for a video like this. i hope you share more like this. very good explanation.
What an awesome explanation!
Great information and detailed explanation. Thank you so much!!
it was pretty good i should say. reminded my refrigeration 101
Extremely well
Presented thank you
Awesome video. Going to school for this. Thanks
Thank You, good luck with your schooling.
The only thing to improve this would be to include the practical example at end onsite at a home measuring and concluding on a few working and non working units. Then my life is complete. Thank you kind sir.
Great explanation.
Refrigeration cycle made simple
Thank You!
Mister thanks for sharing your knowledge
one of the great video with detail and easy to understand thanks
Thank you :)
Awesome presentation!!
perfect explanation....thank you!
wow that was food for the brain, thank you very much i appreciated that.
the best video I've seen yet, thanks.
The whole process takes place on the P/T saturation curve of the given refrigerant (R22 or other)
Well done, thank you. From complex to simple.