Re: [DML] Refrigerants and the Future

[Martin Gutkowski <martin@xxxxxxxxxxxxxx>]

R-22 is an ozone depleting chemical, according to that website which 
suggests that it's not a component in any of the drop-in replacements in 
Europe. RS24 and R413 are two brands of drop-in replacements, here're 
some links

http://www.environ.com/articles/epa_adds_seven_alternatives_to_i.htm

Quote:

"In 1994, four years after the enactment of the Clean Air Act 
Amendments, the Environmental Protection Agency, issued its first list 
of allowable substitutes for CFC and HCFC refrigerants. " (from your 
site, R-22 is an HCFC)

"RS-24’s ozone-depletion potential (ODP) is zero. "

http://tinyurl.com/3gdve

This is the manufactirer of R413 in the UK. There's quite a bit to read, 
here're some more quotes:

"Comfort Cooling or air conditioning is one of the largest consumers of 
refrigerants on a world-wide basis. Many of these systems operate with 
R22 and are not yet affected by imminent phase-out but there are 
numerous systems operating with R12, particularly in the automotive 
industry. "

"Another option is to convert to a zero ODP drop-in replacement. [R413] 
is the only non-flammabile zero ODP drop-in replacement for R12 ..." - 
this is interesting as it suggests that it does not include the propane 
(?) Dave Swingle mentioned.

"[R413] enables direct expansion systems to be converted to a zero ODP 
refrigerant with no system modifications or oil changes. It is therefore 
an ideal option where the cost of an R134a retrofit cannot be justified 
or where it is not practical to perform an oil change."

...They go on to say that although theoretically the performance will be 
slightly reduced, in practice, experiements show no difference in 
temperature.

I've also found several references to US-based suppliers stocking 
replacements, but *not encessarily* for use in cars. Not because it 
can't be used, but simply that people haven't cottoned on to the idea!

I've had R413 in my DeLorean for two years. It works great, and was well 
tested last year when the UK had its hottest summer for decades (and I 
put my AC to the test on the hottest day which hit nearly 110 degrees). 
I have a black interior and was quite comfortable.

Martin

David Teitelbaum wrote:

> I was just at a local refrigeration supply. They had a brochure from
> one of the refrigerent manufacurers on the counter. The gist of it is
> that R-22 will be phased out in the future. You might ask, Why care?
> The problem is that R-22 is a component in many of the blended
> "drop-in" replacements for R-12. So now we will need a replacement for
> the replacements! You will probably see A/C service take another jump
> in pricing. The best advice is to get your system serviced and as
> leak-proof as possible. Stay with R-12 as long as you can, it is still
> better than any of the alternatives whatever they may be in the
> future. For more info you can go to www.genetron.com
> David Teitelbaum
> vin 10757
> 





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