Eutetic plates

[A/C MAX]

Hello to all,

I need to find a way to estimate the cooling capacity of the eutetic plates, I know that the frezing point depends of the quantity of salt in the water solution inside the plate. but I want to be able to estimate the amount of heat that can be remove, mesure by liters (or gallons ) of eutetic solution.

Thanks in advance

Pierre

[tbirdtbird]

Hello to all,

I need to find a way to estimate the cooling capacity of the eutetic plates, I know that the frezing point depends of the quantity of salt in the water solution inside the plate. but I want to be able to estimate the amount of heat that can be remove, mesure by liters (or gallons ) of eutetic solution.

Thanks in advance

Pierre

Try the Dole website
http://www.doleref.com/products.html
They still make eutectic plates and may have sizing info online.

[Magoo]

Personally I do not like salt solution as the solution tends to stratify, prefer glycol. Nothing worse than a busted plate generally at the top because the water content has frozen.
magoo

[A/C MAX]

Ok, thanks Guys, I'm already send an Email to DOLE, to see if I can buy some eutetic plates, they have a nice brochures, with nice technical information...

I read a couple of very nice old post here in this forum about this plates, they are heavy, and reduce the weight capacity in the delivery truck, BUT, in the other hand, they are SIMPLE, and do not requires sofisticated "on board" electronics, and don't mess arround with the truck engine.

This is an advantage in my country, due to the fact of the high price, and hard to get parts for Carrier and Thermoking, in the small to medium delivery trucks segment.

Thanks for your help!

[tbirdtbird]

Magoo, the entire plate freezes with or without any separation. This is factored into the design. I have worked on transport systems with Dole cold plates that are 50 yrs old and going strong. And yes they ARE simple. I have no financial connection to Dole, but have been to the factory and the quality built into these plates is unlike anything left in America today

[Peter_1]

Personally I do not like salt solution as the solution tends to stratify, prefer glycol. Nothing worse than a busted plate generally at the top because the water content has frozen.
magoo

They always freeze to a solid, even the name says it: eutectic. The purpose is that they solidify.
I'm making often cold plates and this since 1990 and we have the best results with salt.
Stratification with salt, how's that possible if all the salt is disolved in the water?
A big con for glycol is that it's initial purpose is to prevent that a liquid solidifies. It becomes more a slurry when it freezes, not a solid block and that's just what we need: store as much as possible latent heat.

[A/C MAX]

They always freeze to a solid, even the name says it: eutectic. The purpose is that they solidify.
I'm making often cold plates and this since 1990 and we have the best results with salt.
Stratification with salt, how's that possible if all the salt is disolved in the water?
A big con for glycol is that it's initial purpose is to prevent that a liquid solidifies. It becomes more a slurry when it freezes, not a solid block and that's just what we need: store as much as possible latent heat.

Hi Peter, a real pleasure to meet you, I read all your articles about eutectic plates in this forum, as a matter of fact, searching this subjet in the web, is how I reach this forum, thank for share your knowldge

Dole have a very nice and complete information about eutectic plates, they include some cold capacity in BTU for each plates, but still I wondering how we can estimate the cold capacity in KW or BTU for a self designed plates.

Im use to buy some plates for the Italian manufacter FIC, and they works great too, but this time, I looking for some self desing.

Have a nice weekend

Pierre

[Peter_1]

Pierre, if I can help you with the design or pictures, let me know. I don't pretend mine are the best but I'm speaking out of practical experience.
I also grinded open several other plates from larger manufacturers to see how they do it.
The easiest way to weld the seams is roll welding but it's not easuy to find someone who can do this.

[A/C MAX]

Pierre, if I can help you with the design or pictures, let me know. I don't pretend mine are the best but I'm speaking out of practical experience.
I also grinded open several other plates from larger manufacturers to see how they do it.
The easiest way to weld the seams is roll welding but it's not easuy to find someone who can do this.

Hi Peter

Thanks, well I want to use this plates in a small isothermique Renault Kangoo, for medium temperature range 2° to 4°C, my idea is freze the plates trough a chiller, to avoid the instalation of the compresor inside de vehicle, so my first step is calculate the load, and the size of the plates.

As soon as I have mi first sketches I let you know

Thnks Peter, and have a nice week!

[Magoo]

Hi tbirdbird.
Don't get your shorts in a bunch.
I am offering past experince. I am keen to see what the Dole offer, as I have an business interest.
Thank you for input.
magoo

[Magoo]

To Peter dash one.
I bow in your presence, arise Sir Peter .
magoo

[cadwaladr]

what a post lots of info,these systems were very popular but the weight was a problem,very simplistic to operate many variations ,i use them for customers who sell maggots as the ammonia given off does not rot them,

[Magoo]

well there ya go a busted plate.
magoo.