CO2 (R744) Transcritical Booster System Simplified

[@leimroc90]

Who can’t love how trevor can seamlessly include imperial in his talks

[@RefrigerationMentor]

Thanks Le lmroc. We are a global community so we need to make learning easy for everyone.

[@patriciap1214]

I am a woman refrigeration tech here in Pennsylvania and I want to learn more about the CO2. I think the hotel was the way to go for air conditioning and supermarket refrigeration, of course Dupont and honey well I like it you know how that goes. Your video is very informative. I wish you would make a lot more with CO2 and show actual systems and operation

[@RefrigerationMentor]

Well I do have an upcoming CO2 technical training program where we dive into great detail about CO2 refrigeration form design to service, troubleshooting and maintenance refrigerationmentor.com/upcoming-courses/

[@verybdt]

Get into ammonia refrigeration. Shortage of techs. You will never miss an hour.

[@googlerodk20pierrelouis39]

We need more CO2 videos, its a great video content by the way.

[@RefrigerationMentor]

I totally agree.

[@sittek123]

Thank you for the very informative video on the CO2 transcritical booster system! I learned a lot from it, and I especially appreciated the chart that you used to illustrate the different components of the system. I was wondering if you would be willing to share that chart in PDF format? I would love to be able to reference it more easily in the future. Thanks again for the great video!

[@RefrigerationMentor]

It is a great document. That is one of Copeland documents and I am not sure where to find it online at this point.

[@Pious-Inquisitor]

Looking at transitioning to supermarket refrigeration, this was extremely helpful

[@RefrigerationMentor]

Awesome. We have many refrigeration courses and the supermarket learning program is one of them find out more on the refrigerationmentor.com/events page

[@CanogaHVACRLLC]

Sounds awesome. I am highly interested in CO2, but I haven’t decided when to start diving into it. Thank you for this short video.

[@RefrigerationMentor]

Your Welcome

[@fernandosoto4712]

Thanks for the video. Great info I work on supermarket refrigeration . This is new to me. Lots of super markets are going this way so I think it's time to hit the books again ...

[@RefrigerationMentor]

Thanks for watching!

[@thanktheknife]

Love it Trevor, been listening to all your Co2 podcasts on Spotify this week. Can’t tell you how much I appreciate all the knowledge you are sharing, you manage to get it across in an understandable way, really are a mentor to me. Question, why is it called a booster system?

[@RefrigerationMentor]

Thank you very much. I am really glad they are helping you. Please share with a friend and leave a review on Spotify. Why it is called a booster system is because the low temperature compressors are discharging into the medium temperature compressors and the CO2 (R744) is boosted to a higher pressure

[@thanktheknife]

@@RefrigerationMentor Thanks for clearing that up Trevor, pretty amazing stuff that discharge becomes suction! Would love to see a video from you (if you haven’t already not made one) in regards to phycometric charts. I find them confusing but believe they would help immensely understand systems better. Any advise or resources you recommend?

[@ryanwilson5222]

Solid explanation. There’s always more, but this nailed it

[@RefrigerationMentor]

Thanks Ryan! I appreciate you taking the time to watch and comment.

[@africaRBG]

doesnt get any better than this. thanks

[@RefrigerationMentor]

@@africaRBG your welcome.

[@reftech1]

Nice Video. Helps to make it easier to grasp the basic concepts.

[@RefrigerationMentor]

Glad to hear that!

[@yagotwrektm8244]

I don't know how I've gone this long without discovering your content but man I gotta tell ya real meat and potato stuff you have. I was wondering if you had a link to the diagram you used in this video that I could print out or at least read a little better? Thanks again and keep up the great work!

[@RefrigerationMentor]

Please subscribe, like and share it on your social platforms so other people can find it like you did. Yes email me at [e-mail] in the subject link RM CO2 PH diagram and I will send you an updated diagram I have built.

[@matthewphilpott1702]

Hey can you make a CO2 refrigerant video all the basics about the compound, the oil these systems use and what happens if overcharged or undercharged. Can you also talk about the expansion rate, how much we get in a can, what types of can sizes will we typically see in the field? Can we also get info on the different types of low temperature metering devices? Also can you give us an idea how a heat pump CO2 system can work? Will we be able to avoid freezing the air moisture with these systems? Will they need a bypass valve as well?

[@RefrigerationMentor]

Yes we dive into all this stuff in the different techncial CO2 programs we offerwww.refrigerationmentor.com you should check some of them out.

[@nicovandeventer8727]

Very well explained Could you send me a link to the diagram in the background so i may follow it on the pressure chart please If you understand the basic principles it makes the fault finding so much easier Thanks for the video

[@RefrigerationMentor]

You will have to reach out to Emerson or take a screenshot of the video.

[@thirty006]

Awesome Video Trevor and sooo helpful. I've seen a video of an actual CO2 test chamber with a sight glass and the Transcritical, Liquid, Vapor, and Supercritical states are visualized. The video was a bit confusing in that it did not use imperial measurements. Do you know of video that might show this using imperial measurements or possibly some diagrams to better understand this "state" change?

[@RefrigerationMentor]

Sorry for the late reply. Yes I will have something for you soon.

[@mohammedwakilansari2587]

thank you sir please make more video so we can understand easy co2

[@RefrigerationMentor]

Will do.

[@snpdawg]

Great video! Does Emerson’s system not utilize a desuperheater from their LT evap discharge back to the flash tank before connecting to the MT compressor suction?

[@RefrigerationMentor]

Not in this Demo trainer. I don't believe they design CO2 racks yet. You will need to contact Emerson to find out more.

[@luccaszach]

Does the co2 come out of the high pressure valve as a gas or a liquid into the flash tank receiver?

[@RefrigerationMentor]

Great question it will be both.

[@ryancomeau8616]

best explanation good job man

[@RefrigerationMentor]

Thanks Ryan! Your comment means a lot.

[@franklinlamptey3657]

More ...more.. thank you so much

[@RefrigerationMentor]

More to come. What did you like about the video?

[@franklinlamptey3657]

Very educative

[@toyinorodare4072]

Thank you for the knowledge sharing.

[@RefrigerationMentor]

My pleasure!

[@bullishbear2686]

Im not very well versed in commercial refrigeration. Looking at the diagram would the medium temp evap require a check valve? Looks to me like the low temp compressors would try to discharge in reverse flow through the medium temp evap.

[@RefrigerationMentor]

The low temp discharge right into the suction of the medium temp compressors.

[@RefrigerationMentor]

@myselfremade the cooling 2 different zone. low temp and medium temp.

[@RefrigerationMentor]

@myselfremade they would use a two stage compressor for that process.

[@AfakDu]

thank you very much...

[@RefrigerationMentor]

You're most welcome

[@Bubbs_1974]

Hi this is a great video, easy to understand. but why is it called a BOOSTER whats doing the boosting ??

[@RefrigerationMentor]

Great Question. You are boosting the LT compressor discharge gas in the suction of the MT

[@hankb7733]

Regarding the gas cooler; This appears to be air cooled. Is this the typical method used to cool CO2 coming out of the compressors?

[@RefrigerationMentor]

For supermarket application I usually see Air cooled gas coolers or adiabatic gas coolers

[@stephenn5785]

Great video... Is is possible to get my hands on that poster to use in the classroom?

[@RefrigerationMentor]

You will have to talk with a representative from Emerson.

[@freezerguy]

Where did you get that chart and how can I get one?

[@RefrigerationMentor]

Yeah it is an awesome chart. You maybe able to find on Copelands website or ask your local Copelands rep to see if they can send you a copy.

[@gabo7904]

Trevor,Are those diagrams available on line?

[@RefrigerationMentor]

That was an Emerson diagram I used. Not sure where you can find them online.

[@mekyleavacadogaming7354]

I want to see other c02 videos! Thanks

[@RefrigerationMentor]

Head to the CO2 playlist

[@dainielpusey8815]

I am from Jamaica I am currently enrolled as a hvac student. I would love to come to Canada to work what are your recommendations.

[@RefrigerationMentor]

Apply for a student work visa, get a position as a helper at a company. Work your butt off, and work your way up at a HVACR company Canada until you get your journeymen certificate.

[@humaidsiddiqui8103]

Heyy, could you recommend any software to design a refrigeration system, to calculate the cooling load , COP etc

[@RefrigerationMentor]

Check out this event I have in on micropipe refrigeration design software. zoom.us/meeting/register/tJYpce6trTkvH9cExYlmkw6tMaNofsR_vng_

[@robertpierce9108]

can you please send a link that chart and diagram you are using?

[@RefrigerationMentor]

You will have to contact Emerson for that diagram or if you have a LinkedIn account you can download it here www.linkedin.com/posts/tejmatthews_emerson-transcritical-booster-slide-activity-6762937745087221760-Vcat?

[@michelgrenier1878]

So on hot summer days above 31 C the CO2 only condenses in the flash tank receiver cooling the trans-critical gas into liquid ?

[@RefrigerationMentor]

Yes above 31C there is no pressure temperature relationship. The pressure is reduced through the HPV high pressure valve and droplets will fall out of the refrigerant vapor and drop to the bottom of the flash tank/receiver.

[@sunilpal4942]

Which CO2 refrigeration system is better for providing refrigeration to building

[@RefrigerationMentor]

There are more and more options each year. You will see many CO2 heat pumps and chillers make their way into the market over the next few years.

[@SmartSnacks.]

Why two high or low temp compressors are needed, we can have a single high power compressor, right?

[@RefrigerationMentor]

Can you ask that question in a different way?

[@SmartSnacks.]

@@RefrigerationMentor Sorry, I've edited the question!, please see if you can understand.

[@rob2945]

Can we download that wall poster?

[@RefrigerationMentor]

You will have to reach out to your local Emerson Rep to see if they can get it for you. I do not see it on their website.

[@mekyleavacadogaming7354]

I need that chart

[@RefrigerationMentor]

Reach out to your local Emerson Rep. I cannot find it on their website.

[@NigelHermann]

baaaar

[@RefrigerationMentor]

Yes its important to know how convert units