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Posted by Stormin Mormon on August 26, 2008, 4:33 pm
Dear Steve,
Lets take a bit of a look at the situation. Since you're in Germany,
does that mean you're exempt from the USA regulations about freon recovery,
and disposal?
Anyhow, we do need a bit more information to be helpful. Please see if
the existing equipment has any technical specs. Name plate, that kind of
thing. Do you know the temperature range of the equipment?
As to producing -40 temps, that's going to provide some challenges. Not
many refrigerants do that low temp. Zero F is doable, with 404a, but not
sure about the lower temp. Water cooled condensor is excellent idea, you
have plenty of cold water to work with.
Lets get some more information.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
I need to assemble a cold plate system for a marine freezer for the boat I
am building. I have purchased 3 used cold plates aproximately 18" x 24" x 4"
that appear to be in good condition. They all have evaporator valves with
them. I am aware that I must change the medium inside the cold plates for
the freezer application. I have no experience with refrigeration systems, so
I will need a lot of help. The goal is to freeze down the plates once every
24 hours or more. The heat load will vary widely in this application. I will
need an evaporation temperature around -40 for the medium I wish to use. I
would like to also use a raw water cooled condensor for space reasons. I
also want to mount the machinery in the engine space which is physically
separated from the evaporators by about 20'. I need help in sizing/choosing
the compressor, the accumulator and the refrigerant at least.. Should I use
a controller, unique valving or other components that I have not mentioned?
Could the system be designed to be self regulating? It would be better if I
do the machinery installation, as I know the boat, but I will have the
system professionally charged and tested. I know no one with this
experience, so any advice is welcome. Effectively, I am looking for a
reliable design.
Thanks in advance,
Steve
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Posted by Shaun on August 26, 2008, 4:48 pm
an idiot mormon and a bunch of resi guys, no useful information can come
> Dear Steve,
> Lets take a bit of a look at the situation. Since you're in Germany,
> does that mean you're exempt from the USA regulations about freon
> recovery,
> and disposal?
> Anyhow, we do need a bit more information to be helpful. Please see if
> the existing equipment has any technical specs. Name plate, that kind of
> thing. Do you know the temperature range of the equipment?
> As to producing -40 temps, that's going to provide some challenges. Not
> many refrigerants do that low temp. Zero F is doable, with 404a, but not
> sure about the lower temp. Water cooled condensor is excellent idea, you
> have plenty of cold water to work with.
> Lets get some more information.
> --
> Christopher A. Young
> Learn more about Jesus
> www.lds.org
> .
> I need to assemble a cold plate system for a marine freezer for the boat I
> am building. I have purchased 3 used cold plates aproximately 18" x 24" x
> 4"
> that appear to be in good condition. They all have evaporator valves with
> them. I am aware that I must change the medium inside the cold plates for
> the freezer application. I have no experience with refrigeration systems,
> so
> I will need a lot of help. The goal is to freeze down the plates once
> every
> 24 hours or more. The heat load will vary widely in this application. I
> will
> need an evaporation temperature around -40 for the medium I wish to use. I
> would like to also use a raw water cooled condensor for space reasons. I
> also want to mount the machinery in the engine space which is physically
> separated from the evaporators by about 20'. I need help in
> sizing/choosing
> the compressor, the accumulator and the refrigerant at least.. Should I
> use
> a controller, unique valving or other components that I have not
> mentioned?
> Could the system be designed to be self regulating? It would be better if
> I
> do the machinery installation, as I know the boat, but I will have the
> system professionally charged and tested. I know no one with this
> experience, so any advice is welcome. Effectively, I am looking for a
> reliable design.
> Thanks in advance,
> Steve
>
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Posted by Noon-Air on August 26, 2008, 8:18 pm
> an idiot mormon and a bunch of resi guys, no useful information can come
Actually there is a refrigeration engineer in europe that can help, but you
may have to wring him out first... he likes to swim around in the bottle and
not just sniff the cork. He used to be a regular poster in here, but haven't
seen him in a while.
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Posted by Stormin Mormon on August 26, 2008, 8:38 pm
Perhaps you'd like to answer the questions, then?
--
Christopher A. Young
Idiot Mormon
.
an idiot mormon and a bunch of resi guys, no useful information can come
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Posted by KJPRO on August 26, 2008, 9:05 pm
> Lets get some more information.
Why, it wouldn't help you any...
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> Lets take a bit of a look at the situation. Since you're in Germany,
> does that mean you're exempt from the USA regulations about freon
> recovery,
> and disposal?
> Anyhow, we do need a bit more information to be helpful. Please see if
> the existing equipment has any technical specs. Name plate, that kind of
> thing. Do you know the temperature range of the equipment?
> As to producing -40 temps, that's going to provide some challenges. Not
> many refrigerants do that low temp. Zero F is doable, with 404a, but not
> sure about the lower temp. Water cooled condensor is excellent idea, you
> have plenty of cold water to work with.
> Lets get some more information.
> --
> Christopher A. Young
> Learn more about Jesus
> www.lds.org
> .
> I need to assemble a cold plate system for a marine freezer for the boat I
> am building. I have purchased 3 used cold plates aproximately 18" x 24" x
> 4"
> that appear to be in good condition. They all have evaporator valves with
> them. I am aware that I must change the medium inside the cold plates for
> the freezer application. I have no experience with refrigeration systems,
> so
> I will need a lot of help. The goal is to freeze down the plates once
> every
> 24 hours or more. The heat load will vary widely in this application. I
> will
> need an evaporation temperature around -40 for the medium I wish to use. I
> would like to also use a raw water cooled condensor for space reasons. I
> also want to mount the machinery in the engine space which is physically
> separated from the evaporators by about 20'. I need help in
> sizing/choosing
> the compressor, the accumulator and the refrigerant at least.. Should I
> use
> a controller, unique valving or other components that I have not
> mentioned?
> Could the system be designed to be self regulating? It would be better if
> I
> do the machinery installation, as I know the boat, but I will have the
> system professionally charged and tested. I know no one with this
> experience, so any advice is welcome. Effectively, I am looking for a
> reliable design.
> Thanks in advance,
> Steve
>