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Thread: GWP for R410a ?

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    Question GWP for R410a ?



    Hello,
    Which is the only correct GWP of R410a?
    Different manufacturers give different values.

    Gasco say 2088
    Dehon say 2088
    PG7 say 2087,5
    Danfoss (app) say 1980
    Int.gas say (550+3400)/2=1975
    Toshiba say 1975
    Engineering say1725
    emerson say 1725

    Screen013.jpg



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    Re: GWP for R410a ?

    Gerritt

    I have literally just signed into this Forum to ask the very same question. I have 1980 or 2088 depending on who you look at. I clearly have not looked at as many resources as yourself. I also have two GWP numbers for R32 which are 550 and 675.

    Can anyone provide clarity on this please?

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    Re: GWP for R410a ?

    No one can really answer your question.
    By the way, What are the GWP units?? and ODP??

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    Re: GWP for R410a ?

    .

    R410A is 2088

    see

    http://www.ior.org.uk/app/images/dow...%2030.5.14.pdf

    All refrigerants are fully documented.

    Rob

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    Re: GWP for R410a ?

    Quote Originally Posted by chemi-cool View Post
    No one can really answer your question.
    By the way, What are the GWP units?? and ODP??
    Hi Chemi-cool

    GWP is based on the unit 1 and C02 is the base unit gas, if C02 = 1 and
    R410A = 2088 then 410 is 2088 times more polluting than C02.

    It all goes back to the 1980's with Chlorine and ODP (ozone depletion potential)
    All refrigerants were given a number representing the amount of Chlorine in them.
    They were all based on the unit value of 1 and R12 had the most Chlorine so it
    was given the designation unit of 1.

    Any other refrigerant that had Chlorine in them were measured and the amount was given
    as a 0. of the whole unit 1. R22 for example was/is 0.05 ODP, a fraction of the base unit 1
    and therefore still considered not that bad a gas as far as ODP goes.

    Rob

    .
    Last edited by Rob White; 16-01-2016 at 08:52 PM.
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    Re: GWP for R410a ?

    Thanks Rob.

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    Re: GWP for R410a ?

    Amazing how the powers to be switched their focus in the 80's 90's and oo's from Ozone Depleting Potential to our current Global Warming Potential. I'll let myself out.
    To the optimist, the glass is half full. To the pessimist, the glass is half empty.

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    Re: GWP for R410a ?

    I think some of the discrepancies arise due to references to different IPCC assessment reports. The F-gas regulations use AR4 for calculations of CO2 equivalents. Under AR4, the GWP of R410A is 2088 and R32 is 675.

    There is, however, a newer report, called AR5 (who would have guessed). This has reassessed the refrigerants' GWPs. So, just to confuse matters, some quote the figures from this report. R410A, for instance, is 1924 under AR5.

    As Rob said, this document might help explain: http://www.ior.org.uk/app/images/dow...%2030.5.14.pdf

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    Re: GWP for R410a ?

    Thank you Neil. I have been discussing this with many industry experts for a few weeks now and your answer is very helpful.

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    Re: GWP for R410a ?

    Quote Originally Posted by neil View Post
    I think some of the discrepancies arise due to references to different IPCC assessment reports. The F-gas regulations use AR4 for calculations of CO2 equivalents. Under AR4, the GWP of R410A is 2088 and R32 is 675.

    There is, however, a newer report, called AR5 (who would have guessed). This has reassessed the refrigerants' GWPs. So, just to confuse matters, some quote the figures from this report. R410A, for instance, is 1924 under AR5.

    As Rob said, this document might help explain: http://www.ior.org.uk/app/images/dow...%2030.5.14.pdf
    Thanks, I feel better now using 410A

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