is this a good evap for a chiller?

[Overklokk]

Hello!

is this a good evap for a Chiller? :


http://home.online.no/~kbudalen/r134a%20uniter/Picture-014.jpg

[Çhrist0ph]

looks good, because it has LOTS of surface area.

[Overklokk]

Originally posted by Çhrist0ph
looks good, because it has LOTS of surface area.

Thats what i tink also....

But i wonder howe cold the water can be if i use it and use this kompressor:

http://home.online.no/~kbudalen/r134a%20uniter/spec.jpg

[kommando]

Looks like 1 hp if my knowleage is right, looks sick!

[Overklokk]

Originally posted by kommando
Looks like 1 hp if my knowleage is right, looks sick!

I hope its good for som -c on the water :-)

This is my chiller in progres...

http://home.online.no/~kbudalen/chiller%20web/komp-og-kondenser.jpg

[kommando]

Looks good, are you using a copper res?

[Overklokk]

Originally posted by kommando
Looks good, are you using a copper res?

Tnx!

Yes the res is 0,9mm copper and i wil solder more on it today:-)

After all the build is done i mus isolate alot :-)

The mompressor is a bit stronger then the prom and i wil use r404a on it.

Any idea of what water temp i can get with it?

I was thinking of using abot 6ft 0,31" captube..... is that good or is it too long?

The chiller wil cool a Prescott and 9800XT on high volt :-)

[Reflex1]

looks great! :toast: ...i like the compact res!

doubt people can tell u how low the temps. will go, thats up to u to find out :D

shud be a killer tho! :D keep us posted with pix ;)

[Tonic]

Originally posted by Overklokk
Tnx!

Yes the res is 0,9mm copper and i wil solder more on it today:-)

After all the build is done i mus isolate alot :-)

The mompressor is a bit stronger then the prom and i wil use r404a on it.

Any idea of what water temp i can get with it?

I was thinking of using abot 6ft 0,31" captube..... is that good or is it too long?

The chiller wil cool a Prescott and 9800XT on high volt :-)

I'm thinking that reservoir's material must have a low heat
conductivy.. with that you can have a better insulation than
copper

I'm not sure, but that serve valve on compressor must be upward not downward?

And I wish you to fast and without problems building this chiller :toast:

[Overklokk]

Originally posted by a5h
looks great! :toast: ...i like the compact res!

doubt people can tell u how low the temps. will go, thats up to u to find out :D

shud be a killer tho! :D keep us posted with pix ;)

Did some more work on the Chiller :-)

Hope this thing is going to work :-) This is my wery first build, so if somthing is bad please let me know :-)

http://home.online.no/~kbudalen/chiller%20web/klar-til-trykk-test-5.jpg

[Overklokk]

Originally posted by Tonic
I'm thinking that reservoir's material must have a low heat
conductivy.. with that you can have a better insulation than
copper

I'm not sure, but that serve valve on compressor must be upward not downward?

And I wish you to fast and without problems building this chiller :toast:

Copper was the only thing that i hawe laying around here, so thats way i used it ! I wil isolat it well so i hope its working ok......

http://home.online.no/~kbudalen/chiller%20web/klar-til-trykk-test-2.jpg

[Çhrist0ph]

:eek: How much cap tube do you have on that chiller your working on? looks like whole spool of 50 feet!

[Overklokk]

Originally posted by Çhrist0ph
:eek: How much cap tube do you have on that chiller your working on? looks like whole spool of 50 feet!

I used 4,5meter of 0,31" cap tube.......

Gary wrote some place here that 3meter of 0,28" is good for about 150w load and with 0,31" cap i multiple with 1,6....

Do you think its too long? I wil use r404 on it.

[Gary Lloyd]

It all looks very good. The only thing I see missing is a fill tube for the coolant on top of the reservoir.

[Overklokk]

Originally posted by Gary Lloyd
It all looks very good. The only thing I see missing is a fill tube for the coolant on top of the reservoir.

Tnx Gary!

Fill tube is comming and if the thing work well i wil isolate alot and build a case around it :-)

Wonder about what water temp i can get?

[Pandrone]

Nice system :).

i doubt that is a 1hp compressor. That 1PH that's printed on the compressor, doesn't that mean 1Phase?

[Gary Lloyd]

Originally posted by Pandrone
Nice system :).

i doubt that is a 1hp compressor. That 1PH that's printed on the compressor, doesn't that mean 1Phase?

Exactly so. I would guess that this is about 1/2HP. In any case, it will do the job quite nicely. :D

[Çhrist0ph]

oh, only 4.5m :p:

just looks like so much in that pic

[Overklokk]

Hello,

Last night the chiller godt some r404a and i started it up. I was using 2 waterblocs and was using 1 80w Tec on each block.

The water temp was at -19c wit the system compleatly non isolarted.

I was thinking this was bad so i added som more cap tube. I went from 4,5m to 7m 0,31" and started the system again.......

After about 5 min the kompressor started too make som strange noise......... and it did not cool any more...

i am afraid that it a boken valve or somthing in the kompressor.

What doo you tink is wrong?

mayby i must get another kompressor?

[pippin88]

Was -19C as low as it was going? Insulation also makes a big difference.

I'd say 7m is probably too restrictive, at a guess.

[Overklokk]

Originally posted by pippin88
Was -19C as low as it was going? Insulation also makes a big difference.

I'd say 7m is probably too restrictive, at a guess.

Yes -19c was the lowest temp on the water with load of 2* 80w tec....

Mayby the 4,5m cap was too restrictive? mayby 3,5m is better than the 7m?

But i am afraid that the kompressor is dead.....

[Gary Lloyd]

I am certainly not an expert on tecs, but it is my understanding that the heat output (hot side) is more than double the input (cold side). If this is the case, then the heat load for two 80W tecs would be in excess of 300W. Someone please correct me if I am wrong.

[Overklokk]

Originally posted by Gary Lloyd
I am certainly not an expert on tecs, but it is my understanding that the heat output (hot side) is more than double the input (cold side). If this is the case, then the heat load for two 80W tecs would be in excess of 300W. Someone please correct me if I am wrong.

I dont know but i think that 80w is the heat output??

What do you tink of the kompressor?
Is it posible that 7m 0,31" is way to restrective? So that the kompressor is not strong enuf?

The sound in the kompressor was rally high and it did not sonds wel.....

It diden manage too get the suction pressure down wit 7m cap

Do you think its dead ?

[Gary Lloyd]

With the compressor off, remove refrigerant until the pressures on both gauges are 0psi. Then run the compressor. The suction gauge should pull down to at least 15-20" of vacuum.

[Gary Lloyd]

I'm assuming you have a high side access shrader, but I don't see one in the pics.

[Overklokk]

Originally posted by Gary Lloyd
I'm assuming you have a high side access shrader, but I don't see one in the pics.

No i dont have a high side shrader...........

but i wil mount one...

Is it other way too say if the kompressor is bad? Is it posible too kill the kompressor with too long cap tube?

What cap tube lenght must i use on this chiller wit 180-220w load?

mayby 3,5m is way better than 7,0m?

[Gary Lloyd]

I can't see it from here, but this is what I suspect happened: I think when you added the cap tube extension you completely plugged the cap tube with brazing material. You then added WAY too much refrigerant, causing the high side pressure to skyrocket.

At that point one of two things will happen. Either a) the compressor's internal relief valve will open, saving the valves from breaking, or b) the compressor valves break, destroying the compressor.

[Gary Lloyd]

For 200W, you need about 3M of .031 cap tube.

[Gary Lloyd]

Be careful when you cut the cap tube. If I am correct, then the entire high side will be full of liquid refrigerant, which will spray out when the cap tube is cut.

[Overklokk]

Originally posted by Gary Lloyd
Be careful when you cut the cap tube. If I am correct, then the entire high side will be full of liquid refrigerant, which will spray out when the cap tube is cut.

I think the cap is open..... that the unit managed too cool the water down too +6c before the kompressor start making the noise.....

But i wil be wery careful when i cut it open :-)

Thank you for all the help and i wil post my results as soon i hawe tested yuor tips.

But my friend with the vacumpump etc cant help me before next week.