Modulating Compressors w/ Copeland

In this episode, Josh Souders from Copeland joins the HVAC School Podcast to discuss modulating and variable capacity technologies in HVAC systems. Josh provides an in-depth look at the different levels of modulation available in residential HVAC equipment, from traditional fixed-speed systems to two-stage, multi-stage, and true variable-speed compressors.

The conversation covers the benefits of modulating systems, including improved energy efficiency, better comfort, and enhanced humidity control. Josh explains how modulating technologies allow systems to more closely match the actual cooling or heating load of a building, reducing temperature swings and providing more consistent comfort. He also discusses how longer run times with modulating systems can improve dehumidification performance in humid climates.

The interview delves into the technical details of how different modulating technologies work, from two-stage scroll compressors with solenoid valves to inverter-driven variable speed compressors. Josh highlights some of the challenges and considerations when implementing modulating systems, including proper sizing, airflow matching, and control strategies. The discussion also touches on cold climate heat pumps and how variable speed technology enables better performance in colder temperatures.

Key topics covered:

Types of modulating HVAC technologies: fixed-speed, two-stage, multi-stage, variable-speed
Benefits of modulation: energy efficiency, comfort, humidity control
Technical details of how modulating compressors work
Importance of proper system sizing and airflow matching
Cold climate heat pump applications
Energy efficiency ratings and standards (SEER, EER, HSPF)
Federal and local incentives for high-efficiency HVAC systems
Upcoming refrigerant transitions to A2L refrigerants
Industry trends towards increased adoption of modulating technologies

Arm yourself with knowledge from AC & Heating Connect by Copeland at https://www.ac-heatingconnect.com/.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Subscribe to our YouTube channel.

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#compressors #copeland #education #EER #hvac #SEER #Variable Speed

Author:

Bryan Orr

Company: HVAC School

Position: Founder

Josh Souders

Company: Copeland

Position: Sr. Strategic Program Manager

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Bryan starts by explaining where to ideally locate a vacuum pump when working on a refrigeration system. He emphasizes the importance of pulling from the largest volume locations possible, often at multi-position service valves on the compressor or wherever accessible ports are available. He notes that systems that have been in operation pose unique challenges due to refrigerant dissolved in the oil, which can significantly increase vacuum time.

The podcast then covers the “one hose method” for pulling vacuum, detailing the process of using a single large hose connected to the suction side with the core removed, while placing the micron gauge on the liquid side. Bryan explains how this method can be highly effective for new systems but may take longer for systems that have been in operation. He also discusses the importance of valve quality.

Key topics covered in the podcast include:

Ideal vacuum pump location in refrigeration systems
The “one hose method” for pulling vacuum
Challenges of vacuuming systems that have been in operation
Using heat and nitrogen to improve vacuum efficiency
Importance of quality valves and tools in vacuum procedures
Proper maintenance of vacuum pumps and micron gauges
Dealing with refrigerant dissolved in oil during vacuum
The science behind evaporation at the oil-vapor interface
Tips for speeding up vacuum in difficult conditions
Recommended resources for further learning about vacuum techniques

Get your copy of Review of Vacuum for Service Engineers at TruTech Tools HERE.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.