Cascade 5 (2 Stage GPU)

[bazx]

cascade 5 GPU


First stage

compressor: LG NJ362 R-407C i will also testing a PG130XIT-4CRE 8000btu for future use on this stage
Hx: 12 plate
Danfoss tev: Tes2 00 orifice
Receiver: RLV 02 PED 77*220 V=0,88l
Condenser: 1,10kW
in line filter 1/4 flare
High pressure gauge
water cooled DSH

The copper pipe sizes used in this stage are

1/4 inch used on the expansion valve suction sensor to the suction return
5/16 compressor to the condenser and receiver
3/8 used on the run from the receiver to the expansion valve and HX suction return
1/2 used on the expansion valve to HX

Fittings

1x 5/16 straight
1x 5/16 tee
2x 3/8 tee
1x 3/8 elbow
1x 1/2 elbow

2x 3/8 flare nut
1x 1/4 flare nut
1x sevice port

second stage

compressor: PG130XIT-4CRE 8000btu
Oil separator: temprite 900
danfoss high pressure cut off KP 5
cold ice mini condenser
cold ice pressure relief valve 24 bar
High pressure gauge
spun drier/filter
Chilly type evap with one extra turn
1m braided suction return

refrigerant: R507/R23 for tests with PG130XIT-4CRE 8000btu on 1st stage

then R507/R1150 when the LG NJ282P R goes in


the unit will also have shut off hand valves located on the suction return and cap tube for easy change of evaporators and setups

there will be no case for this unit

the other units

cascade 1 http://www.xtremesystems.org/forums/...d.php?t=143340

cascade 2 http://www.xtremesystems.org/forums/...d.php?t=105549

cascade 3 http://www.xtremesystems.org/forums/...d.php?t=117279

cascade 4 http://www.xtremesystems.org/forums/...d.php?t=126920

[bazx]

[bazx]

[bazx]

[bazx]

getting ready to braze up the expansion valve

tes2 raped in damp cloth




if you look at the tes2 from here you can see where the orifice is fitted into the opening

[Clemmaster]

As always, a very nice unit is going to run

[Solarfall]

looks really cool.. what sort of cooling power are we talking about here ??

[bazx]

looks really cool.. what sort of cooling power are we talking about here ??

when finished should pull around -100c loaded on a gtx


these are the hand valves i will be using 1/4 for the cap tube and a 3/8 for the suction return

i have my dough ts that the 3/8 will give enough flow for the suction return and if it fails to work well will be changed out for some thing better

maybe the shut off valve assembly you find on air conditioners condenser units

both valves will be mounted in a insulated box similar to the HX box

[[XC] gomeler]

Very nicely done Bazx, looks like it's going to be a fun unit to bench on, especially for an 8800GTX. Always loved your avatar also, something in it makes me smile

[n00b 0f l337]

Very nice work, always innovative and with the best parts

[gosmeyer]

Quality has become common place with your builds. Would expect nothing less.
-100c loaded would be killer.

[LittleDevil]

Really nice cascade my friend.

Regards

[before]

Looks very good buddy!

[bazx]

Nice Baz

The 3/8" ball valve in the suction shouldn't have any effect when open if it's like the ones i've got, the only thing i'd be worried about is the temperature. Does the top part seal to the bottom by a flare or by a rubberised ring of some kind internally?

Tom

thats what i am hoping tom, i could always go up a size to 1/2 if it is a problem

alto i have called this a gpu cascade it will have other jobs as well

i am making it so i can just remove the evap and suction return with out having to re gas the unit

this is so i can change the function of the unit at will

i.e.: evap for single card benching all complete with suction return and insulation, a second set of evaps for sli and a third set of evaps for system benching for the ram and Northbridge

this will give me what i have wanted for some time and save me a packet on ln2 with any luck

[bazx]

this is the oil sep i have been using in the last few cascades

its an automatic float type and very easy to use just fill with oil
and braze in

larger image

http://www.benchtec.co.uk/1/cascade5...t/DSC00604.JPG

[bazx]

also got some of the electrics mounted today along with most all the other
components

just have to run the pipe work now

[n00b 0f l337]

Great work!

[[XC] gomeler]

So clean, makes me sad when I look at my builds

[Pete]

Baz can you chnage that right hand compresser round so it's the same way as the one on the left ie both facing each other...i think it'd look nicer

[Gautam]

baz showin' em how it's done as usual.

[bazx]

thanks guys

i do like building cascades and it is getting much easier with each build

pete you sure are hard to please

gomeler your work is fine and you have already done an auto cascade which i have not

[[XC] gomeler]

Psh don't play it off bazx, my autocascade barely ran and I probably would have had better temps if I just vented CO2 over the IHS I like the symmetry of the compressors, remind me of little toysoldiers with a rocket-laucher on it's soldier.. don't ask me how I see this, must be all the fumes in the garage.

[Pete]

i do like building cascades and it is getting much easier with each build

pete you sure are hard to please

You make it look like a toy when THEY ARE NOT (just incase Wiz come over here!!!) You get them done so fast!

Love to have you build me one!

Umm an ex once said that, i am and am not. I just though it'd look good on looks but i guess its like that for pipe routing etc which is fine!

[bazx]

I like the symmetry of the compressors

this is normally a key feature of any of my builds i like balance

as i need to be able to see what i am trying to do when i look at a build
and understand it myself

infact it helps me alot to post the the work here in order so i can see what to do next if ya get what i am sayin

[Barnsley-Bill]

bazx it looks brilliant mate realy clean pro job once again .