It truly amazes me how much of free information I can find on TH-cam today that many people don’t take advantage of and complain that college is too expensive or some other excuses! Thank you very much for this! The content is amazing - the engagement, the animations, simulations etc. I work in this field and never stop learning - I appreciate this a lot!
I watched this for the second time; things are beginning to click and make more sense. Even if you're not getting something right away, keep at it; you'll be surprised how much things begin to click when you persevere.
Wowed thank you Guys for that class. I'm in the field as a maintenance technician every day and I need to stay updated in every aspect I have to admit it HVACR is the greatest skill that always caught my attention.💪👍🙏
Thanks for the teaching and I'm glad to be here cuz every information is of essence to me and I am a HVAC practitioner...from Liberia a western African Nation 🇱🇷🇱🇷
HVAC service is where it's at. If you can master the trade to the point you're very comfortable repairing AC units, furnaces, boilers, water heaters and even better if you also know how to also do installs and swap outs (basically what your average HVAC service tech does) With this experience you'll be able to choose which companies you want to work for and you can do side work and make great money. This is a great way to make extra $$
I have successfully installed about 4 mini split units, some with multi-zones in my home. I own my own vacuum pump, gauges and flare kits; I would love to learn a whole lot more about servicing even if it's just my own equipment. I do have some knowledge about brazing and the importance of using nitrogen. But I can definitely benefit from learning much more about servicing and repairing these units.
Kalos Enterprises, HVACR School, greetings from Canada here, Mr. Bert, Mr. Elliot, Mr. Bryan. I appreciate a lot for the information. You guys get deep into this information. I would ask you gentlemen to do something for the northern side that is Canada in case there is anything. Well appreciated guys.
Physicist here. Around minute 20 it is said that "heat is the amount of energy something has" but that's wrong. To put it simply, heat is the "exchange of energy" due to a temperature difference. Heat is not something that is owned, but it's just a short way to refer to an energy transfer between a hotter and a colder body. The amount of energy something has is called, unsurprisingly, energy: it can be internal energy, kinetic energy, potential energy.... In this case we are pretty much considering only internal energy.
Discussion of PSIA & PSIG needlessly confusing esp. around T= 11:13 because he says the A means atmosphere when it actually means absolute. And just like metric makes calculations easier, absolute makes calculations like Boyles law simpler.
@@denverbraughler3948 I replaced the chinese capacitor that was about a year old with an Amrad 45+5 370/440v. Both tested fine. Didn't test under load though. Should have tested before replacing (now have a spare). I can hear the compressor but the fan isn't running. Going to bypass the thermostat and see if I can rule that out. Learning as I go...
Unfortunately, the presenters have mislead the students by saying that the compressor doesn't impart energy to the refrigerant. A low pressure, low temperature gas comes in and a hot, higher pressure gas exits. Energy must have been supplied to do this! A simple example should help - when you use an old, hand held bicycle pump the tire and the pump will heat up. The "pumper" does work on the air and this results in increasing the air's energy and hence its temperature. One additional comment: I think it would be nice if, in Part II, you explain the molecular reason why the metering valve cools the refrigerant. Even though I've been critical, I would like to say that Kalos does a great service to the HVACR community and wish that more companies were as honest and knowledgeable as Kalos.
Yes this is right, I'm not sure where they said the compressor doesn't impart energy though maybe i missed it. They did speak about pressure so it's my assumption that it was implied. My first thought when I read your comment was the hand air pressure test: Blow air against your hand from a distance (About a foot), then blow air against your hand whilst gently pressing your mouth against your hand with the exact same amount of pressure/force. you will notice when you blow air against it with your mouth pressing against your hand, the air begins to heat up rapidly... the temperature increase implies an external force was supplied by virtue of the "compression" (being an application of pressure/force); the refrigerant during the LTLP vapour stage, becomes 'more rapid' due to, 1. the compressing force being applied, and, 2. the volume decreasing, thus transferring kinetic energy efficiently between molecules without any immediate or permeable escape route, making it HTHP vapour. So basically, the refrigerant molecules are 'pushed together', the pushing transfers kinetic energy onto them (supplied by the compressor), then they impact each other in a compact space to transfer energy efficiently, but no energy can escape so it energy circulates from within. Thus, creating a sustaining and highly kinetic concentrated solvent = HTHP vapour. the best part about these communities is their objectivity.
Not to sound disrespectful but this just sounds redundant af. Circling the block just to get next door. It seems like a lot of shit and it probably is for the mere fact of the equation "moving heat" or "manipulating temperature." Dont call me dumb for saying this, but wouldn't it be easier to subtract heat entirely to keep things cool instead???
You can't just subtract heat. There's no easy way to just remove heat, heat moves from higher to lower temperatures so you make the refrigerant colder than it, so it warms the refrigerant up then you condense and because the gas is compressed down to a liquid and concentrated that heat energy it can be dissipated, brought back to a cold gas and repeated..
I will never understand the value of all the different units for pressure. How you scale things has no impact on accuracy. Accuracy is dependent on the device. It doesn't matter how you scale it, you just might end up with more decimals in one unit. All these units are based off of old school analog devices. The Pascal is the only unit you need for all forms of pressure. Need a vacuum? Well that's negative gauge pressure in pascals. Don't like big numbers with lots of 0's? Well the metric system has a solution for that too called SI units. They allow you to easily rescale by factors of 1000 without actually changing the unit. Most importantly, the Pascal is a breeze for any engineering calculations that need to be done. Just plug and play, no conversions required other than converting the SI prefix to engineering notation which is a piece of cake for engineers. Still boggles my mind how ridiculous all the units we have for pressure. Most importantly, America, switch to the f***ing metric system. This is all just insane! Do your engineers a favour.
I usually like the videos from the HVAC School group but this one has too many side stories behind the scenes. I know you aren't professional actors but it was awkward to watch. Want to be lead guy snitched on his new guys and now they are all in a room facing him and his nervous body language. Older tech is overflexing and making it worse for the younger dude and more confusion for the other techs because he had a great night before... I mean I'm 17 mins in trying to see if I could use this to help out younger techs and it's been basically a mild reality show haha. I stopped watching.
Well done - illustrated 👍 and explained.👍
It truly amazes me how much of free information I can find on TH-cam today that many people don’t take advantage of and complain that college is too expensive or some other excuses! Thank you very much for this! The content is amazing - the engagement, the animations, simulations etc. I work in this field and never stop learning - I appreciate this a lot!
I watched this for the second time; things are beginning to click and make more sense.
Even if you're not getting something right away, keep at it; you'll be surprised how much things begin to click when you persevere.
Wowed thank you Guys for that class. I'm in the field as a maintenance technician every day and I need to stay updated in every aspect I have to admit it HVACR is the greatest skill that always caught my attention.💪👍🙏
It’s so good with two teachers.
Two different perspectives.
Love it
Thanks for the teaching and I'm glad to be here cuz every information is of essence to me and I am a HVAC practitioner...from Liberia a western African Nation 🇱🇷🇱🇷
im an engineering intern right now and its really cool to see field workers get as excited as i do about the details and the science. nice job guys :)
Thank you for the video. I am starting my journey in HVAC and this gave me a lot. much appreciated.
HVAC service is where it's at. If you can master the trade to the point you're very comfortable repairing AC units, furnaces, boilers, water heaters and even better if you also know how to also do installs and swap outs (basically what your average HVAC service tech does)
With this experience you'll be able to choose which companies you want to work for and you can do side work and make great money. This is a great way to make extra $$
Simply these gentlemen reorganized my big picture into the most detailed knowledge in less than a hour! Thanks a lot.
I have successfully installed about 4 mini split units, some with multi-zones in my home. I own my own vacuum pump, gauges and flare kits; I would love to learn a whole lot more about servicing even if it's just my own equipment. I do have some knowledge about brazing and the importance of using nitrogen. But I can definitely benefit from learning much more about servicing and repairing these units.
Kalos Enterprises, HVACR School, greetings from Canada here, Mr. Bert, Mr. Elliot, Mr. Bryan. I appreciate a lot for the information. You guys get deep into this information. I would ask you gentlemen to do something for the northern side that is Canada in case there is anything. Well appreciated guys.
great video! easy to understand and follow. please make more.
Always great to see Bert!
Just because he is a clown 🤡 . In the good sense, of course.
These guys hopefully appreciate the team of people they have around them.
Hello,I'm Davi, I'm from Brazil. Vídeo very good, thank you very much
Wow amazing explanation sir thanks
VeryGood teachers , excellent attitude hands down .
Ty guys! Great content. Nice to see Bert doing his thing.
Physicist here. Around minute 20 it is said that "heat is the amount of energy something has" but that's wrong. To put it simply, heat is the "exchange of energy" due to a temperature difference. Heat is not something that is owned, but it's just a short way to refer to an energy transfer between a hotter and a colder body. The amount of energy something has is called, unsurprisingly, energy: it can be internal energy, kinetic energy, potential energy.... In this case we are pretty much considering only internal energy.
yep and we call that potential energy heat energy or thermal energy.
Very informative. These guys are great together!
Love the magnets on the board. Where did you all get them?
now I started out to get it
to my knowledge if I understand the refrigeration cycle and its parts and function of each of them I'll be able to get it
From Kenya.... waiting for part ll
Informational video, also lead instructor is Ben stiller in disguise teaching hvac
Where can I find the books or slides???
Discussion of PSIA & PSIG needlessly confusing esp. around T= 11:13 because he says the A means atmosphere when it actually means absolute. And just like metric makes calculations easier, absolute makes calculations like Boyles law simpler.
Cool stuff. I'm trying to troubleshoot a roof mount packaged unit at my parents house but find myself going down rabit holes.
@@denverbraughler3948 I replaced the chinese capacitor that was about a year old with an Amrad 45+5 370/440v. Both tested fine. Didn't test under load though. Should have tested before replacing (now have a spare). I can hear the compressor but the fan isn't running. Going to bypass the thermostat and see if I can rule that out. Learning as I go...
Might be ADHD? I had the same issue until i fixed it
Indoor or outdoor blower?
@@zero2three1 Your thermostat does not control the outdoor fan, when the unit is running check to see if you're getting voltage to the fan at all😊
@@matttzzz2 I take adderall or modafinil sometimes. Very helpful. Wish I discovered it sooner... Gonna look into what you mean by ADHD. Lol!
That was awesome. Thank you so much.
Love it!
"I wasn't listening"
-Bert
LOL
Unfortunately, the presenters have mislead the students by saying that the compressor doesn't impart energy to the refrigerant. A low pressure, low temperature gas comes in and a hot, higher pressure gas exits. Energy must have been supplied to do this! A simple example should help - when you use an old, hand held bicycle pump the tire and the pump will heat up. The "pumper" does work on the air and this results in increasing the air's energy and hence its temperature.
One additional comment: I think it would be nice if, in Part II, you explain the molecular reason why the metering valve cools the refrigerant.
Even though I've been critical, I would like to say that Kalos does a great service to the HVACR community and wish that more companies were as honest and knowledgeable as Kalos.
Yes this is right, I'm not sure where they said the compressor doesn't impart energy though maybe i missed it. They did speak about pressure so it's my assumption that it was implied. My first thought when I read your comment was the hand air pressure test:
Blow air against your hand from a distance (About a foot), then blow air against your hand whilst gently pressing your mouth against your hand with the exact same amount of pressure/force. you will notice when you blow air against it with your mouth pressing against your hand, the air begins to heat up rapidly...
the temperature increase implies an external force was supplied by virtue of the "compression" (being an application of pressure/force); the refrigerant during the LTLP vapour stage, becomes 'more rapid' due to, 1. the compressing force being applied, and, 2. the volume decreasing, thus transferring kinetic energy efficiently between molecules without any immediate or permeable escape route, making it HTHP vapour. So basically, the refrigerant molecules are 'pushed together', the pushing transfers kinetic energy onto them (supplied by the compressor), then they impact each other in a compact space to transfer energy efficiently, but no energy can escape so it energy circulates from within. Thus, creating a sustaining and highly kinetic concentrated solvent = HTHP vapour.
the best part about these communities is their objectivity.
Solid GOLD!!!!! Love ya'll
Very good explanation
great class
Mfw mr. B gives us a 47 minute video for a test the same day:
What y’all doing in Destin Florida? Seen one of your vans
Mark Pelligrino looks and acts like he JUST got out of bed.
Like when you made this comment.
@@Jimmyjimjimjim Damn you sure got me there jimmyjimmyjimmyjim.
thank you 👌🙋🙏
Great work!
Essentials made easy!
this is good stuff
Good video when is part 2
Lol the future is coming. You asked what I was thinking fam!
Next instalment is going to be published on wednesday, tune in!
Good no hockey game that night now I have something to watch.😁
Thanks for the video. However what an uncomfortable commentary from the guy who got rid of the equation. 41:47
New learner here😊
Hello from Arizona
14.7 PSI
The trade guys are loving this. The physics guys are losing their minds...
thanx hvac school
Berts back!!!!!!!!!!
I didn’t know Psig was 14.7 zeroed
Ideal gas law IS useful!!!
سلام چرا زیرنویس فارسی نداره لطفاً بازیرنویس فارسی هم بزارید ممنون ❤
Smith Maria Garcia Sarah Lopez Lisa
Not to sound disrespectful but this just sounds redundant af. Circling the block just to get next door. It seems like a lot of shit and it probably is for the mere fact of the equation "moving heat" or "manipulating temperature." Dont call me dumb for saying this, but wouldn't it be easier to subtract heat entirely to keep things cool instead???
You can't just subtract heat. There's no easy way to just remove heat, heat moves from higher to lower temperatures so you make the refrigerant colder than it, so it warms the refrigerant up then you condense and because the gas is compressed down to a liquid and concentrated that heat energy it can be dissipated, brought back to a cold gas and repeated..
From Turkmenistan
3:09 BOTW noises lollll
I will never understand the value of all the different units for pressure. How you scale things has no impact on accuracy. Accuracy is dependent on the device. It doesn't matter how you scale it, you just might end up with more decimals in one unit. All these units are based off of old school analog devices. The Pascal is the only unit you need for all forms of pressure. Need a vacuum? Well that's negative gauge pressure in pascals. Don't like big numbers with lots of 0's? Well the metric system has a solution for that too called SI units. They allow you to easily rescale by factors of 1000 without actually changing the unit. Most importantly, the Pascal is a breeze for any engineering calculations that need to be done. Just plug and play, no conversions required other than converting the SI prefix to engineering notation which is a piece of cake for engineers. Still boggles my mind how ridiculous all the units we have for pressure.
Most importantly, America, switch to the f***ing metric system. This is all just insane! Do your engineers a favour.
Berrrrttttman
BERT LIFE BEACHES!
White Jose Wilson Matthew Johnson Anthony
Hello from indonesia
Robinson Thomas Thomas Maria Johnson Richard
I usually like the videos from the HVAC School group but this one has too many side stories behind the scenes. I know you aren't professional actors but it was awkward to watch. Want to be lead guy snitched on his new guys and now they are all in a room facing him and his nervous body language. Older tech is overflexing and making it worse for the younger dude and more confusion for the other techs because he had a great night before... I mean I'm 17 mins in trying to see if I could use this to help out younger techs and it's been basically a mild reality show haha. I stopped watching.
From India
People that say there no such thing as stupid questions are full of sht. If you ask a stupid question, trust me, you're getting judged.
Pretty simple……now a Boeing 787, that’s a different story….
Hello from libya
White Ronald Gonzalez Betty Thompson Susan
these guys look miserable
From Ukraine
@@denverbraughler3948 Привіт. м.Чернівці
Hello,I'm Davi, I'm from Brazil. Vídeo very good, thank you very much
Smith Melissa Smith Patricia Johnson Helen