Searching expert for optimize cascade refrigeration system

[Mirek]

Our company will pay for expert who can help and give us training to design/optimize 2 stage refrigeration system for freezers down to -90°C. Preferably in Europe.
Please contact me through message for detailed information. Regards Mirek

[Josip]

Hi, Mirek

Welcome to RE.

Our company will pay for expert who can help and give us training to design/optimize 2 stage refrigeration system for freezers down to -90°C. Preferably in Europe.
Please contact me through message for detailed information. Regards Mirek

Can you tell us something more about your requirements and then maybe we can offer some help

Best regards, Josip

[Lc_shi]

It's the right place you come. I believe there's many experts here can help you.

regards
LC

[lesringrose]

I have many years experince in design & production of
-90C cascaded systems for Biochemical storage freezers.
If I can be of help, please let me know.

Regards, Les Ringrose, le_rose.btinternet.com

[Brian_UK]

Just a little late I fear Les, check the date

[Samarjit Sen]

I have a customer who requies -135 oC. Can some one suggest if a three compressor cascade system would be able to achieve the same. I have worked with 2 compressor cascade system and have not done any with 3. Assistance shall be highly appreciated.

[Peter_1]

Samarjit, it can be done of course but you know that, but if you need it for a high capacity (some kW's), then this will be to difficult and expensive I think.

I've done once a theoretical calculation for a very small unit (3 x 1HP's) for a class work.
I was then thinking in my mind without checking it right now: R404a, R23 and R14 can do the job I think.

I think the students and myself included could learn a lot from such a project. They have to understand fully the log/P charts and they must be able to use them in the field.

If it's for bigger capacities, then liquid nitrogen would be a better chose.
Anyway, interesting job which I like the most.

I've once made a propylene/ethylene unit (double cascade)

[Samarjit Sen]

Thank you Peter 1. I was going through the forum, and found that this subject has been discussed in a thread of 2005 by Vincent Yu. Finally what happened I do not know. Could I request you to please provide me with some links to a 3 stage cascade system.

The unit is not a big one. I know trying to make one would be expensive, but then I feel it is worth a try. As for the compressors, earlier for a 2 stage we had used Copeland Semi Hermetic. For a 3 stage I gues I shall go for a Semi Hermetic or Copeland Cryoscroll. What would you suggest ?

[surinder singh]

Our company will pay for expert who can help and give us training to design/optimize 2 stage refrigeration system for freezers down to -90°C. Preferably in Europe.
Please contact me through message for detailed information. Regards Mirek

I CAN HELP YOU IN YOUR PROBLEM.
MY EMAIL bensonrefrigeration@rediffmail.com
I LIVE IN INDIA.I HAD BEEN TO GERMANY TWICE TO SEE IKK FAIR
YOU CAN CONTACT ME ON MOBILE
919815526616.SEND ME COMPLETE
DETAILS OF YOUR PROBLEM.

[Brian_UK]

Just a little late I fear Les, check the date

I CAN HELP YOU IN YOUR PROBLEM.
MY EMAIL bensonrefrigeration@rediffmail.com
I LIVE IN INDIA.I HAD BEEN TO GERMANY TWICE TO SEE IKK FAIR
YOU CAN CONTACT ME ON MOBILE
919815526616.SEND ME COMPLETE
DETAILS OF YOUR PROBLEM.

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