Riccilightchill...grey,small thing with NL11F on board

Hi

Some weeks ago Ricci (guy from pure-pc - polish forum) has sent me compressor ...and has said ...make me sth to cool CPU. Work hadn't looked easy, compressor has 1/8 HP and is designed for R600a - so from mine exprience no way to use any another refrigerant than Ronson lighter gas or propane . Ricci said also : "make it the smaller You can make " ...ok . After first build, the best result after whole day of tunning was -30*C unloaded (mix Ronson + propane + very small sip of R507) and unit wasn't able to hold 115W dummyload with even -10*C - compressor switched off after 2 hours of work . After that, Ricci decided to use legendary, brand new Danfoss NL11F ...with this no problems, finaly R507/R410a blend and -57*C unloaded .

Full specs :

Compressor: Danfoss NL11F
Evap: custom designed by piotres with custom enclosure
XV: captube 0.8 mm, 255 cm
Condensor: custom made 165 x 140 x 60 mm , alu-cu, 0.312 kW, + Tt Thunderblade green (8 V power supply) + mesh for fan
Refrigerant : R507/R410a blend
Case : Chipboard baseplate, 45 x 25 cm, painted on grey (structure paint)
Others: Desuperheater, small SLA : (suction line accumulator)





Suction line + evap .



That on left is Ricci's .



"Monsterous" Aspera 1/8 HP on board .







The best result with 1/8 HP, R600a comp .



Alive legend .





Some gas inside ...R507/R410a blend, no tunning . We must insulate it ...





Finish .



Evap temp in 27*C room ...no A64 tests, mine newest Venice seems to have horrible ColdBug . On dummyload - equal to A64 3.3 ghz 1.75V was -40*C .



Temperature with open big window in room ... condensor was cooled by fresh air, around 18-20*C ambient .

Some screens from owner :

Opty 150 (quite poor, I must say ) :

SPI 32M 3252 Mhz@1.73V / -26*C idle MBM5

Cinebench 3276 Mhz@1.73V / -26*C idle MBM5

SP2004 3204 Mhz@1.65V / -6*C stress MBM5

SP2004 + Sandra 3204 Mhz@1.65V/ -27*C idle MBM5

Thanks for tests Ricci .

Regards
Peter

very beautiful work

Nice

Beautiful system, very compact ! I have two thunderblades green too
I would like to know how the fan is connected in 12V because I don't see the wire

Sorry for my language, I hope you to understand ()

here luigi you can see the transformer ^^

http://www.members.lycos.co.uk/piotres1/ricci/9.jpg

Yes i have seen it but I would have more information Kissanounet (Thank you nevertheless )

Instead of putting a Power supply which is encumbering into the system I would like to have a transformer as here according to the price

Especially for Waterchillers unit which need 10-15minutes before turn on the Pc

That means I have hided wires quite good ... hehe

230V wires to transformer is tracer under compressor (that 2 white wires), and fan is connected to transformer with thin wire in green sleeve .

for few mA of fan consumtion you can use a capacitive power supply direct from main line ^^ like this one for a LED

juste choose a 12V Zener diode , it may be suffisant for a low power fan ! just add a diode with the fan to avoid alternative current inside the fan

I wanted to say that i couldn't see the fan connected to the computer (I'm unable to speak as I wish)

Where have you found a transformer like that, i'm very interested

In near refrigeration shop ...it was orginally power supply for refrigeration controllers .

But it's nothing special, it's only 4W .

It seems to be practical in spite of the low power, it must be sufficient powerful for 2 fans of 12*12cm

thank you piotres

very good job

Beautiful and very compact