HVAC 099 TD Temperature differential 2 different substances

[@transmitterguy478]

I have to pause frequently, TY's videos because I'm learning so much it feels like my head is going to EXplode! I have to take time for my head to cool down.

[@love2hvac]

I should have separated condenser TD and evaporator TD

[@theaustinite5320]

I’m different than you sir, my brain delta T way more better than last year, last year I was just ( before Mr. Ty’s videos); I’m just a normal HVACr now I’m a good HVACer. Thanks Mr. Ty.

[@HVACRTECH-83]

Hey tye this is a good video but would be nice to make an updated one going over some of the variables that can change this target dramatically. So many techs argue on diff groups all the time,likely because they've watched videos saying 35 td, 35 td,35td so now they think it always should be 35 because they've never looked at manufacturers performance charts to actually see that this number can change a whole lot even on a system designed and installed perfect. Maybe a video on going over a performance chart,and why these numbers are in fact changing based on evap load would be very helpful.

[@pedrojardim325]

Thanks Ty. For. The. Very nice information Very helpful on HVAC

[@jasonjohnsonHVAC]

While not the most efficient way.....hot gas bypass for the win. That's why I really like the RAWAL DEVICE.....don't need to run an extra line to the evap. It does HGBP and liquid injection all in one device....mounted in the outdoor unit.

[@thanpan1276]

I WENT TO SCHOOL, BUT DIDN'T KNOW TD IS DIFFERENT FROM DELTA T. THANK YOU

[@edlauren9434]

Man, I love your videos! Thank you, thank you! I am a licensed HVAC/Refrigeration contactor with some years of experience :)

[@love2hvac]

Thank you! I appreciate your support

[@mtbbiker6401]

Ty always delivers the info I need to know! I'm becoming such a HVAC NERD.

[@ubaydullahali6794]

Finally!!! Thank you for explaining that the way you did. I have always wondered how that worked, but i could never get a proper answer, but this video changed that, thank you again and keep up the good work

[@love2hvac]

Excellent, glad I could help!

[@zipperdingo6385]

Amazing mentor teacher instructor, super lovely personality

[@danwittels5542]

Very interesting, I always pick up something new from your videos, thanks!

[@samsmith854]

Another awesome video Ty.! Next week I start my first HVAC job.! Im so excited to be going in the field to learn everyday as well as see your videos. You have taught me well sir. Thank you. Cannot wait to continue to learn everyday.

[@love2hvac]

Awesome! Keep an open mind, write down notes and questions, don't argue with your lead, and drink plenty of water!

[@samsmith854]

@@love2hvac i am always taking notes.! I was pretty proud. I was offered a job by one of my instructors over the summer who owns a commercial refrigeration and cooking equipment company. It was nice to be noticed for always trying to be top of my game in learning ahead and taking great care in lab and class to do my best.

[@love2hvac]

@@samsmith854 awesome!!!!!!!!!!

[@thisisyourcaptainspeaking2259]

Excellent content and explanation, pure gold.

[@hubercats]

Great video, Ty. Thanks!

[@teklesenbetgebreamlak7365]

You are awesome teacher l don.t have enogh words to say thankyou you are gifted

[@love2hvac]

Thank you!

[@pedrojardim1163]

Thanks. For. That. Good helping. Information. God bless

[@realestateservicessaleshea99]

Thank you again Mr.Branaman! 🍺🍺🍺🥃🥃🍿🏌🏻‍♀️ Stay safe. Retired (werk'n)keyboard super tech. wear your safety glasses.

[@alexzapata692]

Thank you Ty. Great video, very informative. I love your style of teaching lots of examples to drive home the points, leaving minimum room for doubt.

[@tonybochiano]

That was a great video

[@christopherhughes2482]

Awesome video Ty!

[@michaeldower5619]

Great video and very informative. I'm moving from residential AC to refrigeration and it's great, love it, but a lot different when troubleshooting. I have a question, when you're using your 10 TD for a walk-in, you're using desired box temperature. With a TXV, I've heard you're supposed to use your TD with current box temperature. Is that correct? If there are any books you recommend to really understand refrigeration, I'd appreciate it. I picked up "COMMERCIAL REFRIGERATION FOR AIR CONDITIONING TECHNICIANS" by Dick Wirz and it's great. Being in the field working hands on is invaluable but there are so many minute details that the books provide at times. Are there any other's you'd suggest? Thank you for your videos, extremely informative and you're teaching style helps plant the points you're trying to convey.

[@love2hvac]

Yes 10 below current box temperature but you need to pull the box down within range first. Feed the TXV a full column of liquid and check superheat. That is the best book, Dick and Irene Wirz are really great people. Check local supply houses and look for manufacturing classes like Copeland, Danfoss, Sporlan, and more. They also have some great online learning resources too. Be sure and check out my friend Cris Stevens with HVACR videos. He has excellent commercial videos.

[@dario6749]

Professor do you ou know the charging jackets to check the charge on heat pump on low temperature weather. I'm thinking that maybe we could increase the saturation temperature on the outdoor coil until it reaches the design TD, so you would know (by also measuring the coil output temperature) the subcooling, and therefore the charge in system. What do you think? Also, as new systems have a lower TD does that mean that the would work with a lower subcooling? Thanks a lot.

[@love2hvac]

Yes this is what I do except I use use a tarp around the side of the condensor to raise my saturated temperature to 20⁰F above what temperature day I want to simulate. I also run the heater inside before hand to add a heat load to the home. Note it is not as accurate as checking on a warm day. Yes Newer higher efficiency systems want a lower TD even as low as 10. Subcooling however will depend on the manufacturer. However if it's a 10 TD you can only get 10 of subcooling. Some have 20TD and still have 10 of subcooling while another wants 16 of subcooling.

[@Safi.00197]

Super .... 👍

[@MrElemonator]

Thank God! I was having HVAC withdrawals

[@love2hvac]

I had to go make some $ for a bit

[@coldfinger459sub0]

If I become an instructor and taught air conditioning in automotive class and just tried to explain all this to automotive guys. Their eyes were glazed over they would grow roots into their seat, drool and have to change their diapers.

[@donaldmckee585]

thank you for this video

[@SukhdevSingh-rx3ee]

like learning

[@HectorGarcia-r5p]

Hello Mr. Ty, I wanted to see if you could help me on the Evap. TD, so I know you said that the approximate TD was 35 + or - 5 does this mean that my range could be 30 to 40 TD based on what my superheat target is or is the range only when revamping fan speeds to accommodate high humidity and the TD should be exactly 35, was a little confused on this one. Thanks

[@love2hvac]

TD is not a direct goal. It's just another item to look at to give us a bigger picture. #1 have the appropriate amount of CFM. In a humid climate no more than 350cfm/ton, in a dry climate more like 459 CFM/ton #2 make sure the evaporator temperature does not fall below 32⁰F #3 use a TXV , set subcooling first and then check superheat. #4 after all of that is done TD and delta T should be where they need to be. If they are far off then it's a sign of another hidden problem.

[@HectorGarcia-r5p]

@@love2hvac thanks for your response I appreciate that.

[@isaiahisrael421]

What parameter, which can be monitored in the engine room, indicates evaporator temperature?

[@romancavalrycomfort]

Great information my guy

[@love2hvac]

Thank you

[@markbell6864]

Great videos btw!

[@love2hvac]

Thank you

[@krzychuninio3669]

something wrong here @17:40 Ret.air.temp - Sat.temp = EVTD soo, 67F-x=35F so x=32F ok. But try it on celsius 19,4C-x= 35F -> x=-16C . Its wrong, if i want to have 0*C sat.temp (32F) my Evaporator TD need to be ~19*C

[@mtz5582]

Hi Try Could you please cover such contents in reference to the UK's Air Conditioning Market.Wr don't have great teachers like you over here .Thank you

[@love2hvac]

I would love to come over there and do classes and learn too!

[@eklazhward4739]

where can I get information about the required TD of the evaporator? What TD calculate to, e.g. on a 2,3*C in box supermarket refrigerator? What TD should be of walk-in-freezer where temp inside SHOULD be for example -18*C? who shares this information?

[@love2hvac]

This should help hvacrschool.com/td-refrigeration-evaporators/#:~:text=Evaporator%20TD%20(temperature%20difference)%20is,the%20designed%20or%20expected%20TD.&text=Many%20A%2FC%20techs%20will%20confuse%20TD%20with%20delta%20T.

[@al-ameenallu9927]

actually i am revisiting the video....when i was watching a video on inverter A/C, DOUBT arised was will a almost constantTD difference apply for inverter A/C too, as compressor speed get adjusted based on temperature mismatch between setpoint and room temperature......

[@love2hvac]

I have not covered inverters or even staged compressors yet . Manufactures have such a large variety of how they are controlling the inverters. They all have their own algae them for oil return, TD room deferential, humity and so much more. So many moving targets. It will be fun when I get to that section.

[@al-ameenallu9927]

@@love2hvac happy to hear that u r still working on video....thanks from the bottom of heart for your commitment...waiting for your videos...

[@markbell6864]

Also called condenser split. At least that’s what I learned it as.

[@love2hvac]

Yeah it's had to know what someone means now days.