Cosmo chiller

Hi

I want to show You my last chiller project - it's chiller to cool CCD camera in home astronomical observatory .

Specs :
compressor: Aspera NE2134GK
heat exchanger: plate HX 12 plates
XV: captube 0.8 mm, around 190 cm
condensor: 1.9kW cooled by orginal 230V fan
refrigerant : R507
case: metal case 55 x 50 x 43 cm, black powder coating
others: electronic controller Everycontrol (from -40*C to +99*C), two 230V fans 120/38mm on the back of case .





Case is powder coated .









Around -29*C liquid in first run .











Chiller takes around 350-400W .





Finally -31*C liquid .











With some insulation stuff ....

Regards
Peter

As always, your work is wonderful
That's nice to see a cooler for something else than a cpu, could you add some pics of the chiller in action on the CCD when it's done ?

I don't understand why make a such big 1/3 CV chiller sucking ~400 W for a CCD sensor ?!? Generally, a single Peltier module (10-40 W) is enough to cool the CCD sensor in astronomy observations from -10 to -50 °C very easily (with regulation if you want). There's no need a chiller monster to do that, especially to get only -30 °C... Even a 1/12 CV compressor will be overkill for this task. Is the CCD the only thing cooled or is there something else ?

Chiller is already mounted in observatory since some weeks, and it's said it's working well, making liquid still from -20 to -30*C .
I'm waiting for some pictures from final user and I'll post them here .

I'll never build chiller with weaker compressor than 1/2HP ..never . In my opinion, based on mine experiences, chiller needs much more stronger compressor than Single-stage, becasue even non-heated water is quite big load .

Regards
Peter

Two pics from customer, instalation of chiller is for me bit messy but that's not mine problem I think .

Till now client use 400 l/h pump from Tt Big Water kit, but it going to be changed soon I think .





Regards
Peter

OK, thx for the pics. I was right visibly, it's completely overkill to use this monster to cool just a CCD sensor when other people use a Peltier module without problem... Why this guy don't want to use a little Peltier module ? Far less room/power/cost.

[quand on voit la monture du téléscope, on se dit " lot of money " ^^ ]

[C'est pas une raison, un système avec un Peltier tiendrait dans la moitié de la boite isolée posée sur l'oculaire pour des perfs similaires. Faut voir la taille du capteur, ça a une incidence sur sa dissip aussi...]
En cherchant 2 minutes sur un truc, bah je suis tombé sur le modèle que c'est avec les tarifs : http://www.galileo.cc/Belgique-FR/marques_...=asa&typ=Newton

C'est pas si cher...Je m'attendais à bien plus !