Archive for February, 2011

Copper: A Boost of Fresh Air for HVAC Units

February 27th, 2011 No comments

Adam Estelle, guest blogger

By Adam Estelle, CDA Project Engineer

Adam Estelle, CDA Project Engineer, attended the Air Conditioning Contractors of America (ACCA) Conference and Indoor Air Expo 2011 in San Antonio, Feb. 15-17. ACCA is a non-profit association serving more than 60,000 professionals and 4,000 businesses in the HVACR community. The group works together to promote professional contracting, energy efficiency, and healthy indoor living.

Microbial growth in heating, ventilating and air-conditioning (HVAC) systems is a growing concern for those who care about improving air quality and efficiency. Earlier this month, the CDA attended the Air Conditioning Contractors of American (ACCA) Conference to provide information on the energy and antimicrobial benefits of copper HVAC components. Read more…

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CDA Shares the Benefits of Copper at the AHR Expo (Part 2 of 2)

February 10th, 2011 No comments

The Copper Rotor Motor – A Sustainable Choice for Energy Efficiency


By Richard deFay, CDA Project Manager and Electrical Applications Specialist 

Our goal for the AHR expo was to share the concept of energy efficient motor management by talking about the innovations offered by the copper rotor motor. We took the opportunity to educate engineers, motor end users and others interested in motor technology.

Although the technology has been around for about seven years, the application had lagged. The difficult economy, the fact that from a manufacturing perspective it would require a significant capital investment, and the increasing price of copper all have contributed to this. But I’m encouraged that the momentum is turning. Electric motors account for nearly 23% of total U.S. energy use and two-thirds of energy use in industrial settings. If we had more copper rotor motors in use, we would save in kilowatt-hours and in dollars for both individual users and the U.S. as a whole.

Richard deFay and Harold Moret at the AHR booth

I also emphasize the life cycle cost vs. the first cost and the need for early replacement of older, less efficient motors when I talk to people about copper rotor motors. The initial cost of purchasing a motor represents only 2% of the total cost of ownership. Energy costs, maintenance and other variables make up the other 98% of the cost over the lifetime of the motor.

I urge anyone who purchases motors commercially to compare options. Have a look at the MotorMaster+, a software tool developed by Washington State University and sponsored by the Department of Energy, that gives companies and organizations helpful data on whether it’s more cost effective to repair or replace a motor. And for more information on the benefits of a copper rotor motor, go to the CDA website. Or you can email me at

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CDA Shares the Benefits of Copper at the AHR Expo (Part 1 of 2)

February 10th, 2011 Comments off

Bob Weed, CDA Vice President OEM, and Richard deFay, CDA Project Manager, Sustainable Electric Energy, and Electrical Applications Specialist, attended the International Air Conditioning, Heating and Refrigerating Exposition (AHR Expo) at the Las Vegas Convention Center Jan. 31-Feb. 3, 2011. More than 1,800 manufacturers and suppliers of HVACR systems attended the convention. The CDA’s booth featured information on MicroGroove™ technology and the benefits of the copper rotor motor to improve energy efficiency. 

Introducing MicroGroove Advantage – the Newest Heat Exchanger

Coil Technology


By Bob Weed, CDA Vice President OEM 

The CDA last week proudly introduced MicroGroove technology at the AHR Expo in Las Vegas. At our booth, we demonstrated that the use of small diameter copper tubes in air conditioning and refrigeration products are a commercial reality today. And we introduced this new technology to more than 150 engineers and designers who visited our booth.

OEMs in particular are interested in this technology because they’re trying to achieve higher energy efficiency and a better performance for their products. We were able to demonstrate that the smaller diameter copper tubes would allow them to use less refrigerant and fewer materials.

Heat transfer from the refrigerant to the tube wall is more effective inside copper tubes with diameters smaller than the conventional tube. As a result, less bulky coils can be produced and air conditioners can be smaller, lighter and more energy efficient. The new coils provide the high durability and performance that we currently count on with conventional copper tubes, but they use less raw material.

Coils on display in our booth showcased the Microgroove Advantage, which allows manufacturers to offer eco-friendly and efficient solutions to their customers. If you weren’t able to join us in Las Vegas, check out our new website, or contact me at for more information.

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Copper is On Board as 2011 Detroit Auto Show Electrifies Visitors

February 4th, 2011 No comments
Auto Show attendees were wowed by spacious, high-tech exhibits

As anyone who attended the North American International Auto Show in Detroit this year can attest, the most exciting aspects of new automotive technology are no longer in the cool-but-not-coming-anytime-soon category.  A lot of what automakers have been dreaming about has arrived.  And not just in flashy concept cars OEMs have traditionally displayed to demonstrate to show-goers what is possible.  The overall atmosphere of this year’s show was authentically, well, electric.  Just about every automaker and supplier showed off their latest technology.  Auto fans responded enthusiastically, peering closely at motors encased in Lucite, watching the impressive action on huge video walls and getting behind the wheels of electric vehicles.  Show attendees got the chance to ride in all-electric cars at the Michigan Economic Development Corporation display on the venue’s lower level and at the Ford Motor Company exhibit, where they stood in line for as long as an hour to sit in a Focus EV or a Transit Connect that made laps around a raised track.  Other full-electric vehicles on-hand at the show included the Honda Fit EV, a Toyota Prius plug-in, the Mercedes SLS AMG E-Cell, the Tesla Model S, the BYD e6 all-electric crossover, the Venturi America and Li-Ion Motors’ Inizio.

Read more…

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