Mini Rotary single stage in a 490mm LeChuck case

[teurorist]

It's buildet now over 1 year becouse i left germany but got finnished today

beginning

Lunite Rotary 16,1 cm? R134a
R507
Capillar length I don?t know any more
condensers are 1 Delux from ice-man and und 2 ND50F with 2 14v 24mm 3000rpm deltas running ar around 3500 rpm
around 1m suction with Ice-man evap
and a big thanks to august for all his help and the tools





finished is just a link becouse i'm to lazy to resize :P

http://www.extremecooling.de/forum/a...7&d=1355328966









Loadtest messured at the evap, there is a high delt T, so at the top of the evap the temperature is alwas around 4,5k lower at

with close to 20?C ambient but this unit will never be used in a warmer room at the moment

180W -40?C
200W -39?C
300w -35?C

[sdumper]

Nice job.

Is that your work room its really nice and well organized.

[teurorist]

Nice job.

Is that your work room its really nice and well organized.

no it's the workroom from august123 mine isn't nearly as good as this one

[samsarulz]

That work room is like a dream for me jajaja.

Excellent work with that SS. Deltas? If I recall correctly those were noisy fans xD

[teurorist]

They are but had only space for normal sized fan

And they are even running over specifications

Ah i vorgot i
Made 4 x40mm fans under the compressor

[Stewie007]

I want to see a more broad picture before I certify it as organized!! Show me the evidence! hehe

Looks like you have done some nice work there.

[wdrzal]

That compressor will self-destruct in a short time ........it can't lubricate itself in that orientation.

Walt

[Stewie007]

It is designed for that orientation by the looks of it. Similar to my Tecumseh HG compressor. It is deviated from level by roughly 5* and designed for horizontal operation.

My main concern is its limited ability to keep cool.... They get hot... especially with high pressure differentials assumed by the application.

[Sk_rmouche]

@ Wdrzal : there's some rotaries designed to run in the horizontal position, Tecumseh for example.

Running hot isn't as critical as for piston type compressor. The crankcase is @ the HP pressure, so being hot is normal, windings can withstand over 130?C.

With rotaries, you must ensure superheat as little as possible.

[Stewie007]

Hot running is more than just a function of superheat being too high. You must consider pressure differentials, as the greater that is, the more heat that the compressor generates through additional work. Thus the Heat of Compression in that instance is greater. This was a problem I encountered when my F/D became restricted. It only takes a mild restriction to starve the system downstream. There was a rather large differential involved. The compressor was getting quite hot.

You must also consider mass flow. Even with good superheat leaving the evaporator, if there isn't enough mass flow, then you are risking overheating as well.

So, air flow is rather important. Most rotary systems rely on the condenser fan to promote air flow. I'm not certain that those fans are sufficient to promote enough air flow.

[wdrzal]

Sorry guys, I missed the first picture's which clearly show it's a horizontal compressor. In the other picture's It looked like a vertical rotary was put in there. I should have read the entire thread, my bad.

Walt

[Stewie007]

It is kind of tight in there. I actually looked back to see after you posted that to make sure I didn't make a mistake.