Another great video Ty.! You need to be the teacher of teachers. All your information is great. I was about the only one who really enjoyed psychometrics. Now when I look at any two points I can see how all of your points come together on a chart. Awesome stuff
Welcome gue engerung jobes i teck ...cours local and uint organnal feeuintlot companney made stard methad lot companshion area volve and useing ac systom ok .. chapater .. very con d fdants ok The psy chrometric chart the properties of air is graphically shown in psy chro metric chart.. the following area the line and scales shown in rhe chart.. must bee bacal ac uni coil total area ... vertical .parallel line from the top of the chart extending to the horizontal line at the bottom are dry bulb line the scale at the bottom is dry bul temperature scale ..diognal line are the wet bulb temperature line the scale marked at the curveof chart is wet bulb scale wet bulb and point temperature scales are te same ew oint line are horizontal partallel lie lwfte to right of chart is follwing bacial pscaher ude stnd need some show ac school not work go some ad darmma making iti coures exples 100 150 amond give dopely msking notcorues staey gues ok tell not same lot coures stdy boos tell coure attend harras makin not unde stand tock very feel not soving gouredsome rmoved good gues lot boss cours attnd righting not uderother gues msking fllowing playing lest boy bae is stoping this bacical foll ps art ok gues soe in cldring engrig cors...s ok..
Wowww...I wish my school's and college had such master class teachers... Although this one I'll definitely have to recheck...but trust me it fits in your head straight away..Good Job.. 🙏
Great video Ty. Minor correction: The latent heat of atmospheric moisture is not 970 btu/lb. That is the latent heat of steam at 0 psig or 14.7 Pisa. The atmospheric moisture is at near vacuum around 0.25 psia. Depends on the dew point. A number like 1060 btu/lb is more like it.
Oh yeah, the funky pressure being the sum of all partial pressures. Since water is a tiny fraction of the vapor it has a tiny partial pressure. Weird to think about. Same reason non condensables give you high head pressure but saturation lower than it should be, thanks to its partial pressure being lower than the addition of mostly nitrogen pressure.
Super informative Ty.! I can’t wait for a more in depth video to clean an evap. My unit is only about 3 years old. But I’d like to clean it fully. When I took my front panel off a few months ago to insulate my sensing bulb I tried looking at how to take out my evap to clean. But I didn’t wanna get to far that I couldn’t get it back in. So can’t wait for that more in depth cleaning video.!
Public Service Announcement: "No black widow spiders were harmed during the video process. (Well, almost no black widow spiders.)" Great video as always!!!
Amazing videos .If you attac to these videos the electrical part and how to size the comfort cooling the package will be complete .Nevertheless you are respectful and amazing teacher
Thank you I will be doing a complete electrical series, HP, duct/ airflow, psychometrics, commerical and diagnostics. It's just taking time. I'm learning a lot about audio, recording and editing.
You put out some Good video 📹 it helps me to remember the Terminology. Looking forward for the future videos. Will you be doing any videos on how to size a system and using manual J ? I Appreciate the time you put in your videos. 👍 👍
Vedo ok see v angels coil goos dreing shein dry pan comupant usi covering are dry pan lecking ard bsi dh some are mage are lek rrparing expresin ned lot ard expleas sir good shering comd mind uding coil good ceilinv snd after refixing somd removeing point expleas working gues und stand point ok dif this way my side n..
Great video, thank you! I had a question. How do you feel about making the evaporator a 1/2 ton larger than the condenser to increase run time to help with dehumidification?
A larger evaporator alone will be worse at dehumidification. The larger coil will absorb more heat raising the suction pressure raising suction saturated, that moves the coil temperature farther from the dew point. You have to combine a larger coil with slower airflow to allow more contact time with the coil. That slower airflow could cause the ducts to condensate and sweat. AHRI has performance charts and system matching options that take all this into account. Here is a link that will explain that. hvacrschool.com/an-evaporator-coil-with-no-fins/
Great question, Liquid line Ice formation will be from a restriction on the high side. Suction line Ice formation is because the line temperature is below 32. In residential that is bad but for commercial application such as freezers, Ice makers, custards and more that can be completely normal. Superheat will be vital for that.
There are a quick connection between lines, do you think these connections works with evaporator instead of brazing? The evaporator which it’s made for humidity weather it’s different than the evaporator which it’s made for dry climate in fins or in what? What kind of brazing use between copper and aluminum or aluminum to aluminum? Thanks 🌷🌿
Great questions. I do not know how to braze between copper and aluminum. It's usually all copper coming out of the unit. That's what we connect to. I'm not sure about those quick connects yet.
Same coil for both environments. Some cost line units will have a salt corrosion inhibitor coating. A different size coil will may be used for a diffrent climate. You can have all copper evaporators made that should last forever but they are expensive.
How do domestic air conditioners control relative humidity? As far as I know that in the ACs only cooling and dehumidification take place. But at the dew point, RH of the air remains 100%. Please clear up my doubts.
Many ways methods. I will cover this more in phycrometrics. By slowing the airflow the suction pressure and suction saturated drops farther below dew point removing more moisture. Varable refregerant flow units will also adjust the compressor speed to assist with this also. We can also apply electric reheat to maintain a temperature while removing more moisture. The humidity immediately after the evaporator coil will be higher but less moisture content (fewer grains of moisture) then as the air mixes with the remaining air the over all humidity drops also. Humidity is relative to temperature and overall is a poor way to discuss moisture content but it's what people can relate to the most.
Hi you made a technical error when you were talking about latten heat in the air that has water vapor in it. It takes 970 BTU of heat energy to raise the temperature of hot water that is at 212 deg f to change its state from water to a gas vapor to be steam. For every one pound of water.It takes 144 BTU to change cold water at 32 deg to change its liquid state to a sold state. Now it is ice. For every one pound of water. And it takes 144 BTU of heat added to one pound of ice to change its solid state back to a liquid state water. And it must be pure water with no salt in it. It doesn't take 970 BTU of heat to be removed from the air At the dew point. To remove the cold water vapor out of the air. That only applies to making hot steam. Thanks ken HVACR tech😢
Its a case by case basis. Cost and availability has gone very high lately. The old coils that where built well, would clean. Some companies only sell, some only condition, but for me its case by case basis.
It’s time for the industry to build “ a better mouse trap”. We know that brazing is the major cause if leaks so how about making an A coil WITHOUT braze joints by bending one continuous copper tube . Yes, I know that this isn’t easy but we have to do something to make these better.
The problem is its leaking in the tuning now more so than the brazed connections. www.achrnews.com/articles/104661-troubling-pinhole-leaks-in-evaporator-coils-cause-corrosion-issues
I agree Here is a nice article on it but I think it comes down to lower quality, cheaper and thinner copper. www.achrnews.com/articles/104661-troubling-pinhole-leaks-in-evaporator-coils-cause-corrosion-issues
I believe it's poor evacuation methods! I've watch tubers put the micron gauges on the pump itself or on the pump side of the system,and I also know some only use manifold gauges for the evacuation and wait one hour for any movement than release the charge. 🍺🍺🍺🥃🥃🍿🏌🏻♀️ Stay safe. Retired (werk'n) keyboard super tech. Wear your safety glasses.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
I'm 62 and have learned more from TY than anywhere else. He has really cleared a lot of questions up for me. Great work!
First time I see a great teacher saying poetry in HVAC Way. Thank you so much.
Using this a my hvac class while im on summer. Really appreciate you being so in depth.
Very good presentation covering some overlooked air flow protential issues. I learned a lot Thank You .
That evaporator is wearing a wool sweater made from Ireland. Great informative video. Thanks ty.
Love from India🇮🇳
I just want to thank you for helping me to understand the refrigiatian cycle.
Love it.. always learning something new thanks ty. I can't wait for your air flow videos
Thank you Ty. Good video. It is funny the comment on replacing back the filters because "they don't get dirty".
love your lessons, you cover all aspects of your topics. Thank you
Another great video Ty.! You need to be the teacher of teachers. All your information is great. I was about the only one who really enjoyed psychometrics. Now when I look at any two points I can see how all of your points come together on a chart. Awesome stuff
Welcome gue engerung jobes i teck ...cours local and uint organnal feeuintlot companney made stard methad lot companshion area volve and useing ac systom ok .. chapater .. very con d fdants ok The psy chrometric chart the properties of air is graphically shown in psy chro metric chart.. the following area the line and scales shown in rhe chart.. must bee bacal ac uni coil total area ... vertical .parallel line from the top of the chart extending to the horizontal line at the bottom are dry bulb line the scale at the bottom is dry bul temperature scale ..diognal line are the wet bulb temperature line the scale marked at the curveof chart is wet bulb scale wet bulb and point temperature scales are te same ew oint line are horizontal partallel lie lwfte to right of chart is follwing bacial pscaher ude stnd need some show ac school not work go some ad darmma making iti coures exples 100 150 amond give dopely msking notcorues staey gues ok tell not same lot coures stdy boos tell coure attend harras makin not unde stand tock very feel not soving gouredsome rmoved good gues lot boss cours attnd righting not uderother gues msking fllowing playing lest boy bae is stoping this bacical foll ps art ok gues soe in cldring engrig cors...s ok..
Thank so much….all this information helped me
First, I like your videos then watch it because I know it's going to be amazing as always.
Wowww...I wish my school's and college had such master class teachers... Although this one I'll definitely have to recheck...but trust me it fits in your head straight away..Good Job.. 🙏
Looks like an ac service tech has a competitor))) I'm excited.
Craig is awesome. Hes a good friend of mine we both want to help the industry.
@@love2hvac that's what I wanted to hear exactly)
Cool information
Great video Ty. Minor correction: The latent heat of atmospheric moisture is not 970 btu/lb. That is the latent heat of steam at 0 psig or 14.7 Pisa.
The atmospheric moisture is at near vacuum around 0.25 psia. Depends on the dew point. A number like 1060 btu/lb is more like it.
Oh yeah, the funky pressure being the sum of all partial pressures. Since water is a tiny fraction of the vapor it has a tiny partial pressure. Weird to think about. Same reason non condensables give you high head pressure but saturation lower than it should be, thanks to its partial pressure being lower than the addition of mostly nitrogen pressure.
Super informative Ty.! I can’t wait for a more in depth video to clean an evap. My unit is only about 3 years old. But I’d like to clean it fully.
When I took my front panel off a few months ago to insulate my sensing bulb I tried looking at how to take out my evap to clean. But I didn’t wanna get to far that I couldn’t get it back in. So can’t wait for that more in depth cleaning video.!
Public Service Announcement: "No black widow spiders were harmed during the video process. (Well, almost no black widow spiders.)"
Great video as always!!!
I like your bug spray! 😉
👏👏👏👏 Thanks for all the knowledge you teach on your videos.
Amazing videos .If you attac to these videos the electrical part and how to size the comfort cooling the package will be complete .Nevertheless you are respectful and amazing teacher
Thank you
I will be doing a complete electrical series, HP, duct/ airflow, psychometrics, commerical and diagnostics. It's just taking time. I'm learning a lot about audio, recording and editing.
35:00 The spider must have done something like "damn, they found me" 😂 Thanks Ty, lots of good information.
You put out some Good video 📹 it helps me to remember the Terminology. Looking forward for the future videos. Will you be doing any videos on how to size a system and using manual J ?
I Appreciate the time you put in your videos. 👍 👍
Thank you. Eventually I will get there. It's taking a bit longer than I expected.
Vedo ok see v angels coil goos dreing shein dry pan comupant usi covering are dry pan lecking ard bsi dh some are mage are lek rrparing expresin ned lot ard expleas sir good shering comd mind uding coil good ceilinv snd after refixing somd removeing point expleas working gues und stand point ok dif this way my side n..
👍🏻👍🏻👍🏻 thank you
Thank you Very well explained
35:19: "Make sure you have a bugspray with you".
Bugspray: 35:22
Thanks Ty
Good stuff
Great video, thank you! I had a question. How do you feel about making the evaporator a 1/2 ton larger than the condenser to increase run time to help with dehumidification?
A larger evaporator alone will be worse at dehumidification. The larger coil will absorb more heat raising the suction pressure raising suction saturated, that moves the coil temperature farther from the dew point.
You have to combine a larger coil with slower airflow to allow more contact time with the coil. That slower airflow could cause the ducts to condensate and sweat.
AHRI has performance charts and system matching options that take all this into account.
Here is a link that will explain that.
hvacrschool.com/an-evaporator-coil-with-no-fins/
Ty...can u differentiate reason between suction line and discharge line ice formation....
Great question,
Liquid line Ice formation will be from a restriction on the high side.
Suction line Ice formation is because the line temperature is below 32. In residential that is bad but for commercial application such as freezers, Ice makers, custards and more that can be completely normal. Superheat will be vital for that.
@@love2hvac Thank u sir....for low in gas charge,where will be the ice formation- discharge side or suction side?
32:01 - It’s called milti-poise on the test.
There are a quick connection between lines, do you think these connections works with evaporator instead of brazing? The evaporator which it’s made for humidity weather it’s different than the evaporator which it’s made for dry climate in fins or in what? What kind of brazing use between copper and aluminum or aluminum to aluminum? Thanks 🌷🌿
Great questions. I do not know how to braze between copper and aluminum. It's usually all copper coming out of the unit. That's what we connect to. I'm not sure about those quick connects yet.
Same coil for both environments. Some cost line units will have a salt corrosion inhibitor coating.
A different size coil will may be used for a diffrent climate.
You can have all copper evaporators made that should last forever but they are expensive.
How do domestic air conditioners control relative humidity? As far as I know that in the ACs only cooling and dehumidification take place. But at the dew point, RH of the air remains 100%. Please clear up my doubts.
Many ways methods. I will cover this more in phycrometrics.
By slowing the airflow the suction pressure and suction saturated drops farther below dew point removing more moisture. Varable refregerant flow units will also adjust the compressor speed to assist with this also. We can also apply electric reheat to maintain a temperature while removing more moisture.
The humidity immediately after the evaporator coil will be higher but less moisture content (fewer grains of moisture) then as the air mixes with the remaining air the over all humidity drops also. Humidity is relative to temperature and overall is a poor way to discuss moisture content but it's what people can relate to the most.
10:11 negative vs positive air pressure in an air handler/furnace
When do we need to add holes to the condensate drain line cap?
Yes I will cover that when I get to drain lines
Sir, in R410A case, at what subcool or super heat level, can be top-up allowed?
410a can be topped off easily, unlike other blends. Charge to the manufacture specification.
Hi you made a technical error when you were talking about latten heat in the air that has water vapor in it. It takes 970 BTU of heat energy to raise the temperature of hot water that is at 212 deg f to change its state from water to a gas vapor to be steam. For every one pound of water.It takes 144 BTU to change cold water at 32 deg to change its liquid state to a sold state. Now it is ice. For every one pound of water. And it takes 144 BTU of heat added to one pound of ice to change its solid state back to a liquid state water. And it must be pure water with no salt in it. It doesn't take 970 BTU of heat to be removed from the air At the dew point. To remove the cold water vapor out of the air. That only applies to making hot steam. Thanks ken HVACR tech😢
what's the cost of replacing evaporator coils vs reconditioning them?
Its a case by case basis. Cost and availability has gone very high lately. The old coils that where built well, would clean.
Some companies only sell, some only condition, but for me its case by case basis.
It’s time for the industry to build “ a better mouse trap”. We know that brazing is the major cause if leaks so how about making an A coil WITHOUT braze joints by bending one continuous copper tube . Yes, I know that this isn’t easy but we have to do something to make these better.
The problem is its leaking in the tuning now more so than the brazed connections.
www.achrnews.com/articles/104661-troubling-pinhole-leaks-in-evaporator-coils-cause-corrosion-issues
I think a vapor coils are leaking so much because they went thinner on the aluminum tubing
I agree
Here is a nice article on it but I think it comes down to lower quality, cheaper and thinner copper.
www.achrnews.com/articles/104661-troubling-pinhole-leaks-in-evaporator-coils-cause-corrosion-issues
What's your thoughts on the micro channel evaporator coil?
Pls sir u make vedio little close we feel like vedio make from far
Ok I will do that
I believe it's poor evacuation methods!
I've watch tubers put the micron gauges on the pump itself or on the pump side of the system,and I also know some only use manifold gauges for the evacuation and wait one hour for any movement than release the charge.
🍺🍺🍺🥃🥃🍿🏌🏻♀️
Stay safe.
Retired (werk'n) keyboard super tech. Wear your safety glasses.
I agree. I recorder the vacuum series over 3 monthes ago. I decided to wait to build the importance of vacuum threw the series first.
You say it's a w coil. I say tripple A coil.
I like that
soo much scraps
🤣 bug spray 😂