My cooling units .. - what ya think ?

[Firzen]

Well since some friends asked me if i could build them some cooling units
and im interested in AC engeneering too ive started building this "firzen1" units ;)

specs:
danfoss NL11F low temp compressor
R404 charged
225cm cap length
30gramm dryer

And i just wanted to get some feedback - would be nice :)



http://img460.imageshack.us/img460/7708/11yy.jpg

http://img460.imageshack.us/img460/310/29qj.jpg

http://img460.imageshack.us/img460/6919/33hd.jpg

http://img460.imageshack.us/img460/3485/49rq.jpg

and finally :banana:

http://img460.imageshack.us/img460/4944/54et.jpg

http://img460.imageshack.us/img460/4264/67zu.jpg

[Entsafter]

sweet little production line!
good temps :D
you only have to create a case.

[GoThr3k]

where did you get the radiators from??

[mnewxcv]

how much would one system cost?

[hawaiiparty]

what type of capillary have you used?and how about of the id of the pipe of the liquid line and suction line? ps i like very much your units....many compliments

[hawaiiparty]

one more question on the compressor....this danfoss uses 220v 50hz current?

[Firzen]

sweet little production line!
good temps :D
you only have to create a case.

thx ^^

i thought so too ..but actually i dont have enough money/time to build some
the users can design their own case for this units ;)

i got these radiators from ebay for 30€ about 40$ i think


how much would one system cost?

PM me ;)

EDIT:
yea the compressor runs with 220volts but you could use a step down converter, or i could get my hands on an 110volt compressor hmm

0,7mm cap tubing
liquid line has a dieameter of 10mm(@condensor) and the suction is 12mm (exterior diameter)
hope that answeres your question and thank you :)

[hawaiiparty]

could you give me the ebay link of the ebay seller....thx another question about the compressor: hp?

how many watt could you dissipate with this unit @ 56 c

[runmc]

I think you have some good stuff there.

Good luck with results.:D

[Patrickclouds]

could you give me the ebay link of the ebay seller....

here you go (http://cgi.ebay.de/ZERN-120mm-Kupfer-Radiator-Top-Preis_W0QQitemZ6830665954QQcategoryZ74207QQssPageN ameZWDVWQQrdZ1QQcmdZViewItem)

[RussC]

My only concern if those HXs are for "water only" ie there soldered, not brazed? But if their working, then I guess its OK, and assume there brazed.

RussC


here you go (http://cgi.ebay.de/ZERN-120mm-Kupfer-Radiator-Top-Preis_W0QQitemZ6830665954QQcategoryZ74207QQssPageN ameZWDVWQQrdZ1QQcmdZViewItem)

[mnewxcv]

pm sent

[Gray Mole]

Yeah I'd seen that link a while ago for those radiator/condensors and thought the same thing, Russ. They might be ok for the short term, but will they hold up? On 404a though they might be fine but time would tell.

Johann's sellin' some condensors for pretty cheap. I got one from him (2 row, 60mm thick with shroud) but I haven't tested it for performance yet. It looks like about the same as these ones though for about the same price so might be a better consideration. not to go advertising for him or anything :p but I'd be somewhat concened about safety and reliability with a radiator that wasn't certified for use with high pressure refrigerant.

All that aside, nice work mate :) I'm curious what kind of results you'll get from them after they're load tested :toast:


Gray

[Unseen]

I see you r from europe. Maybe you r interesting in that cases i made ;)

http://img386.imageshack.us/img386/7050/hpim18826nq.jpg (http://imageshack.us)

http://img453.imageshack.us/img453/8886/hpim18843cl.jpg (http://imageshack.us)

[Athens[2004]]

@Firzen sweeties

Unseen@ and urs also :hehe:

[Icy]

umm out of intrest where does that guage get linked to in your system? dont suppose i could have a pic for reference :D

[the_new_guy]

nice stuff love the condenser!

[Firzen]

thx guys :)

compressor has 1/3HP
i didnt test the watt dissipation @ -56°C
but i did a stresstest with my water cooling sys ;)
-35°C iirc i know thats way too inaccurate.... but i hope to get a TEC element or something like that in the next few days
http://img202.imageshack.us/img202/7748/10034071hb.th.jpg (http://img202.imageshack.us/my.php?image=10034071hb.jpg)


umm out of intrest where does that guage get linked to in your system? dont suppose i could have a pic for reference
sure u can have a pic which gauge? ( if this q is for me )

The condensor should be fine.
Some other ppl @ extremecooling.net are using just the same

@unseen
that case is awesome ^^
and very neat brazing there :)

[Patrickclouds]

the zern condensor should work up to 30 bar

[Gray Mole]

Is there a manufacturer's burst pressure rating on it? That would really help to be sure about it.

It really looks great though, and should move some heat as well. If it's decent for use on single stage I might have to have a look as well.

What are the exact dimensions on it?


Gray

[Firzen]

i was looking by myself for a datasheet but in the end i bought them becouse iceman from extremecooling told me that they would work fine .. and i agree ;)

the dimensions are : 14,6cm*12,5cm*6cm

[Gray Mole]

Well if ppl are using it with good success then it sounds just fine :)

Does that width measurement include the barbs? I'm just curious as the overall chassis of a mach2 is 185mm and I wanted to be sure as it sounds like a decent upgrade from the stock one. Tough to say without proper heat removal specs of both that one, and the stock one though.

Shame that the only way to test the burst pressure is to actually blow one up lol

Gray

[Icy]

Anyone who does test one of these can they please make a vid of it poping :banana: i do love seeing things blowup :D

[Firzen]

Does that width measurement include the barbs?

if u mean the copper pipes @ the side
- no i dont added them to the measurements
would be then ~170mm instead of 145mm

oh and i dont want to stand next to one of these condensors when it blows up @ burst pressure testing :p:

btw: i would insulate this unit now .. but im waiting for my displays (that i can do a clean wiring over the suction)

so i just go on working on the other units

[piotres]

Nice units :) Very clean made .

Only one question :

Why have you wrap that captube so loosely over the suction ??

[Firzen]

thx m8 :)

honestly i was too afraid to bend the captube too much ... löl
but i will do it right away when im going to insulate

[GuGaCoSa]

Looking very good,can you post other pics of the evap?
Did you brazed all the system with that tiny torch?If so,congrats
What rod did you used to braze the evap?

[Firzen]

yea i brazed everything with 2 torches like that ...
i used some silver rod for the evap

.. i warmed everything up with 2 torches and then brazed the joint fast with one torch :stick:
it isn't very easy indeed

they are very similar to the chilly1 design .. but defenetely NOT the same

http://img231.imageshack.us/img231/2487/10033140uw.jpg

http://img231.imageshack.us/img231/4338/10033671wr.jpg

[the_new_guy]

nice evaps!!

[catkicker]

nice evaps!!


Looking forward to DD project.

[the_new_guy]

yaa still saving up

[ICE COOL]

so dude nice unit did you build.
but the question about your evap. make it sence how big, or what the
folume is of the evap. cause i have still my first unit build, and make
a little the same evap but i hope that you can tell me
how inportant the folume is of the evap. my evap is h= 40mm and b=40mm.

greets ICE COOL.

[Firzen]

thx newguy :] .. (got to ask my friend.. and will answer then to ur PM)
Hi ice cool :)

Actually the volume of the evap isnt that decisive.

The most important thing is .. that the liquid refrigerant has a big surface to evaporate (-> best heat transfer)
Your evap should be fine too .. if its well designed

To be sure that no liquid refrigerant gets into the compressor .. u can bend a "U" in the suction line.