Refrigerant Allows Use Of Mineral Oil In Retrofits

October 31, 2001
/ Print / Reprints /
ShareMore
/ Text Size+
ICOR International's NU-22.
INDIANAPOLIS, IN — The eventual demise of HCFC-22 has caused the industry to look for alternatives. The most popular ones are HFC-based refrigerants that either require a new set of equipment or, at the least, an oil change.

But what if there was a way to make an HFC refrigerant that works with mineral oil?

ICOR International is in the process of introducing NU-22, billed as “a direct replacement for R-22.” According to the company, it does not require any oil change or system modification for use with existing R-22-based systems.

“For hvacr manufacturers, servicemen, distributors, and consumers, NU-22 is the most practical choice for the replacement of HCFC-22,” said ICOR president Jim Tieken.

The refrigerant has an ASHRAE designation of R-417A and consists of 50% 134a, 46.6% 125, and 3.4% 600 (butane). The company said the refrigerant is A1 in terms of toxicity and flammability safety.

The 125 and 134a allow for the new refrigerant to be used “with wide temperature ranges,” said ICOR’s Gordon McKinney. The butane provides “for adequate oil return” when used with mineral, AB, or POE oils, he said.

McKinney said the refrigerant could not be used in centrifugal chillers.“Everything else so far is fair game,” he said. “We are confident in this product. It has been tested for several years in Europe.

“But, first we want to educate people before anybody runs out and uses it.” Mailings have been going out to oem’s, distributors, component manufacturers, contractors, and tech schools. Seminars are being scheduled throughout the United States. And a technical presentation has been put together in print form and on the company’s website (www.icorinternational.com).

The company plans to start out with 10-lb sample cylinders of the refrigerant. The product was shown at the RSES International Conference in Milwaukee, WI, and will receive a major push at the AHR Expo in Atlantic City, NJ.

ICOR officials hope 417A will reduce the reliance on R-22, an HCFC scheduled for phaseout. The retrofit procedures include the removal and recovery of R-22, performing regular service procedures, pulling a 500-micron vacuum, then charging the 417A as a liquid on the high side. Officials said the new refrigerant is charged to a 1:1 ratio with the old refrigerant.

NU-22 is subject to the same issue of glide as other 400 series refrigerants. In reality, ICOR officials said, the glide issue is not raising the concern it did 10 years ago. Said ICOR’s Jim Terry, “We like glide, because it makes the evaporator more efficient.” Added McKinney, “Glide is generally good, and our training materials make it clear when it is not and what to do about it.”

R-417A is not designed to be used as a retrofit for R-410A, the current choice among oem’s for new air conditioning equipment.

For more information, contract ICOR International at 800-497-6805.

Publication date: 11/05/2001

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

Recent Articles by Peter Powell

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

2014 MCAA Annual Convention

Scenes from the 2014 MCAA Annual Convention in Scottsdale, Ariz.

Podcasts

NEWSmakers: Julian Scadden

Training is an ongoing process. Julian will discuss how you can generate maximum return on time and energy invested training by following a three part process. Listen to this podcast to get expert tips on training, tracking and follow up. 

More Podcasts

ACHRNEWS

NEWS 04-21-14 cover

2014 April 21

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

SERVICE CALLS POLL

Which statement on service calls best applies to your business?
View Results Poll Archive

HVACR INDUSTRY STORE

plumbing-hvac.gif
2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research

 

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

DON'T MISS A THING

Magazine image
 
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.

STAY CONNECTED

facebook icontwitter iconyoutube iconLinkedIn i con