-100C NexGen Cascase
 

Soon to be building a dual compressor Cascade for Gulftown at -100c Evap

I will be starting a build log here soon.

any suggestion as to refrigerant? i was thinking

1st stage: R507
2nd stage: R1150/R13

Thats pretty much what everone uses for 2 stagers.

status update:

1st Stage: R-507
2nd Stage: R-13 (I cant believe I found this gas)

I am having a hard time finding R-1150 anywhere! no refrigeration supply house has it available even for order... I have contacted AirGas and hope they can find some R-1150

I will post a picture of the setup in a minute

Feed the pic monster :picmonster:

Might want to ask over on XS about R13, just about every 2 stager I have seen built there uses R1150 for the second stage.

Airgas should have it, tho you might have to order it.

I am not sure of Sdumpers builds and just what his can hold temp wise and the fact I have not used a Gulftown yet so I do not know what heat loads they put out but asking for -100c fully loaded on a 2 stager might be a bit much to ask from what I read.

On a fully loaded I7 mine will sit about -106c on idle, but drop down to ~-85c on full wPrime loads.

In order for 2 stagers to work really well they need the strongest 1st stange you can make, thats the key for handling loads, at least as far as I know.

Like I said SDumper has been making 2 stagers right and left these days, based on my unit and his tweaks and he gets a bit better load handling than my 3 year old unit.

Picture update for -100C 2 Stage Cascade Build
 

Picture of the 1st stage Condensing unit and the 2nd stage rotary compressor

Everything gonna fit on that one tray?

LOL you will have to put a second story on that beast .......LOL

R24 is bringing the cold as well .............

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Hell no! Im in the process of cutting a larger Tray :)

Should be a nice build! Gulftown is going to create massive loads (as im sure you already know) pushing well past 300watts. -100 loaded would be very nice, but maybe a little too cold for just a 2 stager to accomplish :shrug: