• Tenny

    From Martin Rid@21:1/5 to All on Wed Feb 23 15:43:52 2022
    We have a T2RC. and I'm trying to figure out what is the lowest
    temperature we can get without c02 or LNG.
    So far I can get to -9C on refrigeration only. Not sure if that's
    right, but a delta of 30C it might be.

    Cheers
    --


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  • From John Larkin@21:1/5 to martin_riddle@verison.net on Wed Feb 23 13:26:29 2022
    On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid <martin_riddle@verison.net> wrote:

    We have a T2RC. and I'm trying to figure out what is the lowest
    temperature we can get without c02 or LNG.
    So far I can get to -9C on refrigeration only. Not sure if that's
    right, but a delta of 30C it might be.

    Cheers

    The spec claims -68c. It's not stated what "boost" actually means.

    Maybe it needs freon.

    --

    If a man will begin with certainties, he shall end with doubts,
    but if he will be content to begin with doubts he shall end in certainties. Francis Bacon

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  • From Martin Rid@21:1/5 to John Larkin on Wed Feb 23 17:00:35 2022
    John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r
    On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid<martin_riddle@verison.net> wrote:>We have a T2RC. and I'm trying to figure out what is the lowest> temperature we can get without c02 or LNG. >So far I can get to -9C on refrigeration only. Not sure
    if that's> right, but a delta of 30C it might be.>>CheersThe spec claims -68c. It's not stated what "boost" actually means.Maybe it needs freon.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with
    doubts he shall end in certainties.Francis Bacon

    I know, I think the -68 is just the chamber limit with LNG. Due
    to its size.
    The freon also came to mind.

    Boost is the c02 or LNG

    In my prior life we had c02 plates that easily went to -68. But
    that's under a 6x6 box or a bunch of rags.

    I'll contact Tenny.

    Cheers
    --


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  • From Lasse Langwadt Christensen@21:1/5 to All on Wed Feb 23 14:18:59 2022
    onsdag den 23. februar 2022 kl. 23.00.47 UTC+1 skrev Martin Rid:
    John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r
    On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid<martin...@verison.net> wrote:>We have a T2RC. and I'm trying to figure out what is the lowest> temperature we can get without c02 or LNG. >So far I can get to -9C on refrigeration only. Not sure if
    that's> right, but a delta of 30C it might be.>>CheersThe spec claims -68c. It's not stated what "boost" actually means.Maybe it needs freon.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts
    he shall end in certainties.Francis Bacon

    I know, I think the -68 is just the chamber limit with LNG. Due
    to its size.
    The freon also came to mind.

    boiling point of something like R410A is -68'C at 0.4bar absolute so not totally impossible

    is the -9'C with nothing in chamber? i.e. with no heat added?

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  • From John Larkin@21:1/5 to langwadt@fonz.dk on Wed Feb 23 15:53:07 2022
    On Wed, 23 Feb 2022 14:18:59 -0800 (PST), Lasse Langwadt Christensen <langwadt@fonz.dk> wrote:

    onsdag den 23. februar 2022 kl. 23.00.47 UTC+1 skrev Martin Rid:
    John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r
    On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid<martin...@verison.net> wrote:>We have a . and I'm trying to figure out what is the lowest> temperature we can get without c02 or LNG. >So far I can get to -9C on refrigeration only. Not sure if
    that's> right, but a delta of 30C it might be.>>CheersThe spec claims -68c. It's not stated what "boost" actually means.Maybe it needs freon.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts
    he shall end in certainties.Francis Bacon

    I know, I think the -68 is just the chamber limit with LNG. Due
    to its size.
    The freon also came to mind.

    boiling point of something like R410A is -68'C at 0.4bar absolute so not totally impossible

    is the -9'C with nothing in chamber? i.e. with no heat added?

    -9 will barely cool beer.

    A 2-stage refrig should get well below -40c.

    --

    If a man will begin with certainties, he shall end with doubts,
    but if he will be content to begin with doubts he shall end in certainties. Francis Bacon

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  • From Martin Rid@21:1/5 to Lasse Langwadt Christensen on Wed Feb 23 20:42:32 2022
    Lasse Langwadt Christensen <langwadt@fonz.dk> Wrote in message:r
    onsdag den 23. februar 2022 kl. 23.00.47 UTC+1 skrev Martin Rid:> John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r > > On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid<martin...@verison.net> wrote:>We have a T2RC. and I'm
    trying to figure out what is the lowest> temperature we can get without c02 or LNG. >So far I can get to -9C on refrigeration only. Not sure if that's> right, but a delta of 30C it might be.>>CheersThe spec claims -68c. It's not stated what "boost"
    actually means.Maybe it needs freon.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties.Francis Bacon > > I know, I think the -68 is just the chamber limit with LNG.
    Due > to its size. > The freon also came to mind. boiling point of something like R410A is -68'C at 0.4bar absolute so not totally impossibleis the -9'C with nothing in chamber? i.e. with no heat added?

    Less than a watt.


    I have a request in at Tenny.
    Should find out in a day or so.

    Cheers
    --


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  • From Jan Panteltje@21:1/5 to jlarkin@highland_atwork_technology. on Thu Feb 24 06:16:40 2022
    On a sunny day (Wed, 23 Feb 2022 15:53:07 -0800) it happened John Larkin <jlarkin@highland_atwork_technology.com> wrote in <u1id1hh4rfju0tadbhuqfpfm95pj933sh2@4ax.com>:

    On Wed, 23 Feb 2022 14:18:59 -0800 (PST), Lasse Langwadt Christensen ><langwadt@fonz.dk> wrote:

    onsdag den 23. februar 2022 kl. 23.00.47 UTC+1 skrev Martin Rid:
    John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r
    On Wed, 23 Feb 2022 15:43:52 -0500 (EST), Martin Rid<martin...@verison.net> wrote:>We have a . and I'm trying to figure out
    what is the lowest> temperature we can get without c02 or LNG. >So far I can get to -9C on refrigeration only. Not sure if
    that's> right, but a delta of 30C it might be.>>CheersThe spec claims -68c. It's not stated what "boost" actually means.Maybe it
    needs freon.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he
    shall end in certainties.Francis Bacon

    I know, I think the -68 is just the chamber limit with LNG. Due
    to its size.
    The freon also came to mind.

    boiling point of something like R410A is -68'C at 0.4bar absolute so not totally impossible

    is the -9'C with nothing in chamber? i.e. with no heat added?

    -9 will barely cool beer.

    A 2-stage refrig should get well below -40c.

    I have a Sterling cooler that cools a superconducting RF filter and
    my experiments,
    You can use it mo make liquid oxygen too for your missiles.
    http://panteltje.com/pub/cryo/

    Also have a bunch of Peltier 1 inch square elements from ebay
    Could maybe put in seris (have not tried yet).
    Or used for 'trickety generation (yes it works).

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