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In Episode 27 we started a conversation on CO2 and its safety, using it as a refrigerant. 

And it's really important to really understand those safety factors. 

It's still just another refrigerant itself. 

And as a technician in the field, you need to understand those safeties.

So you do need to understand where you're putting your gauges on, as I mentioned in Episode 27, it's very important to take the time to learn about the equipment you're working on. 

In today's episode, we will be continuing our discussion on (R-744) CO2 as a Refrigerant.

• Different areas where you can use CO2 aside from commercial refrigeration.
• Understanding the differences between using CO2 as a refrigerant, then like a standard HFC, HCFC, or an HFO
• Benefits of CO2 because of it's low GWP (global warming potential)
• Benefits of R-744 over synthetic refrigerants
• Importance of knowing the critical point and  triple point
• Things you need to know about trapping CO2
• Quiz - ACCESS HERE

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Today we have Patrick Clardy of Danfoss and he will be unloading a huge amount of CO2 refrigeration knowledge in this episode.  

We will also be discussing Danfoss electronic valves to controllers.

So, get your pen and paper, and don't miss anything on this episode with Patrick!

In today's episode, you'll learn:

• GustavLorentzen 2022 conference
• F-Gas Regulations
• Danfoss High Pressure and Low-Pressure Ejectors
• Danfoss High-Pressure Valves (HPV)
• Danfoss Flash Gas Bypass Valve
• How to make a CO2 refrigeration system more efficient
• How to size a Danfoss Transcritical HPV AK-PC 782A
• How to find Danfoss CO2 installation and user guides
• Danfoss Service Tools to connect CO2 controllers

About Our Guest

Patrick Clardy is the Refrigeration Segment Strategy Director of Danfoss.

He is an experienced and inspired ADAP-KOOL® specialist with more than 25 years of experience in the cooling industry.

He Specialized in technical support, commissioning, and conducting pieces of training and toolbox meetings with regard to CO2 and ADAP-KOOL controls and components throughout the Netherlands.

Know more about Patrick:

LinkedIn: Patrick Clardy

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I've seen CO2 as a refrigerant grow immensely. 

So, we need to start preparing ourselves to understand the differences between that refrigerant and other refrigerants that are coming out there.

In today's episode, you'll learn:

• Different areas where you can use CO2 aside from commercial refrigeration.
• Understanding the differences between using CO2 as a refrigerant, then like a standard HFC, HCFC, or an HFO
• Benefits of CO2 because of it's low GWP (global warming potential)
• Benefits of R-744 over synthetic refrigerants
• Importance of knowing the critical point and  triple point
• Things you need to know about trapping CO2
• Quiz - ACCESS HERE

============================

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Today we have Andre Patenaude again and he will share with us what Copeland offers on their CO2 Transcritical and subcritical compressor product line.  

We dove into the different types of designs for both semi-hermetic and scroll compressors.   

Also, we will discuss different CO2 refrigeration applications and dive into the technical side of Copeland CO2 compressors.

In this episode you'll learn:

• Copeland CO2 Transcritical  Scroll w/ DVI (Europe) and Subcritical compressors
• Copeland CO2 Semi Hermetic Transcritical and Subcritical compressors
• Digital CO2 Scrolls
• European ZOV (VFD) Scroll that works 20Hz to 100Hz
• CoreSense Protection
• Troubleshooting CO2 compressors
• Floating your flash tank pressure

About Our Guest

Andre Patenaude is the Director of Emerson Commercial & Residential Solutions.

He supports system-related innovation and leveraging Emerson’s global cold chain to drive adoption of integrated solutions in North America.

Led marketing efforts pertaining to Emerson’s food retail and chiller markets.

Prior to that, Andre managed Emerson’s global CO2 business development.

Get in touch with Andre Patenaude

E-mail: [email protected]

LinkedIn: @andrepatenaude

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This was a great webinar with Gary McCreadie from HVAC Know It All.  We had a great conversation with large group of technicians and manufacturers who shared their knowledge with us.

Some of the topics that were covered:

Sensible and Latent Heat

Superheat and Subcooling

Dewpoint and Bubble Point

Glide Refrigerants

Pressure Enthalpy Diagram

Temperature Difference Discharge Superheat System Checkpoints

System Troubleshooting

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Had a great discussion with John talking about the importance of training and development.

Learn more about Valley Refrigeration - https://www.valleyrefrigeration.ca/

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Today our guest is Marc Chasserot founder of R744.com.  We had a great conversation on the refrigeration industry, and where it is heading for Natural Refrigerants. Marc has been involve with CO2 refrigeration and natural refrigerants for nearly 20 years and has be on leading edge promoting and driving change towards more environmentally friendly solutions for the refrigeration industry. He talks about the huge amount of opportunity there is in the natural refrigerant space and how it has grown since he started back in 2003. We talk about how much potential there is and how it will continue to grow in years to come. If you want to learn more about Marc's upcoming events check out https://atmo.org/

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There's conflicting information out there from different manufacturers of the equipment to compressor manufacturers to Valve manufacturers.

So, today we're going to dive into a discussion about refrigerant retrofits and what you need to look for pre and post-retrofit. 

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I had the pleasure to hang out with Kevin Compass from the Advanced Refrigeration Podcast  - https://www.advancedrefrigerationpodcast

Kevin has been working on CO2 (R-744) systems for over 8 years.  He has commissioned and started over 90 CO2 systems and has developed a solid technique to fine-tune them.

Topics we discuss:

-The biggest difference between fine-tuning a standard synthetic rack vs a CO2 booster system

-What causes flash tank receiver issues

-CO2 oil management and what to look for when you are having issues

-High-pressure oil systems and how they work

-CO2 defrost and suction strategies

-What is load sizing for defrosting and floating suction on a Booster system

-How often you should be changing filters

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Today, we're gonna get back into a bit of technical stuff.

Today I will discuss:

• Refrigeration piping
• Importance of understanding good piping practices.
• Why it's important to understand what's going on when a system is designed
• Importance of reading manuals
• Different components to keep the oil back at the rack
• Oil management system and troubleshooting

============================

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