Which one you prefer?

[sl4ck]

- Aspera NB1118Z

- Danfoss NLY5.5FK

I know Aspera is 1/4Hp, what about danfoss?

[Nagaru]

Seems small with a 5.5cc displacement.

[kayl]

for most compressors the first few numbers are similar to the compressors displacement.

[sl4ck]

So, Aspera looks better?

[Nagaru]

The Danfoss will be quieter, but will give terrible temps. The Aspera will give nice temps if the system were built well and used a good gas.

[sl4ck]

could it work with ethylene or CO2 @ 2nd stage in a 2 stage cascade?

[ak_47_boy]

mmmm for a gpu or pentium-m cascade it would work nice, i would get a 1/3 or if you are cooling a pentium d then get a 1/2. If useing ethylene definatly use two 1/2hp compressors. Also use cpevs, they help alot with a cascade.

[n00b 0f l337]

A gpu or a pentium-m will be fine on a 1/5-1/4hp compressor. A pentium d will be fine on a 1/3hp. You also DO NOT want to use a CPEV on a 1st stage, bad idea.
And ethylene needs a -40C loaded HX, not a HP rating.

[ak_47_boy]

a 1/3 will be fine if you dont want sub -40 temps loaded. A pentium d is capable of putting out 300watts of heat overclocked. For a everyday rig i guess 1/2hp would be to big. And for cpev i ment the second stage becuase screwing with captube usualy cause you to lose precious ethylene.

[MeltedDuron]

AK, have you never heard of a recovery machine? They are great little things for working with expensive, rare, or dangerous gasses :) you should try one out some time :stick:

[n00b 0f l337]

Once again AK,
HP does not equivalate to temperatures, displacement is actually somewhat more important. Then again have you ever used a CPEV? You know how hard running the line outwards towards the evap can be?

Go take alook at the 4stager.

[sl4ck]

for the 1st stage i have Embraco 1/3HP FFI 12HBK (http://www.buenosaires.ansal.com.ar/Documentacion/pdfs/575014.pdf) and R404a, and i think it it will do the job, my doubt was in 1st stage with the Embraco NB1118Z(I only have this or the Danfoss NLY5.5FK) and CO2 or Ethylene. It's my first cascasde attempt, i and prefer to spend some part of the money in safety devices(Releif Valve, and cutoff switch)

[sl4ck]

Well i can´t find anything abou GIO-BO, looks like it's Italian compressor, but google don't tell me nothing about the compressor neither the brand.

I have this compressor:

GIO-BO B12 A12 B370750
220v 50Hz
1,4FLA 135W
R12 N Made In Italy

What can you tell me about?
HP? Oil Capacity?

[Carlz0r]

Once again AK,
HP does not equivalate to temperatures, displacement is actually somewhat more important. Then again have you ever used a CPEV? You know how hard running the line outwards towards the evap can be?

Go take alook at the 4stager.
Lots of insulation with as small a pipe run as possible is the key.

[Xeon th MG Pony]

Ak try waiting till you have some first hand experiance with TXVs and or CPEVs befor saying things about what to do and not to do.

Noob I wouldn't call it hard at all, unless you never heard of feeder tubes, then I would imagine it could be occationaly difficult.

[Carlz0r]

Ak try waiting till you have some first hand experiance with TXVs and or CPEVs befor saying things about what to do and not to do.

Noob I wouldn't call it hard at all, unless you never heard of feeder tubes, then I would imagine it could be occationaly difficult.
What exactly is a feeder tube?

[Xeon th MG Pony]

1/8th inch diameter tube used to feed the evap this way it gives very little hydraulic resistance Ie pressure drop, normally used most with distributors but can be used for short runs (less then 3 feet) to supply a evap from a TXV thats in an awkward position.

[epion2985]

So its just a name for the line from the txv to the evap?

[n00b 0f l337]

1/8" does it have kinking problems when coiled around a flex line?

[Xeon th MG Pony]

Ya, simply a name given for the function.

As for your purposes in Micro scale I am not sure how it would fair, in small scale chillers it aut to do just peachy, and used widely in Large central A/C.
Due to its larger diameter I would imagine it wouldn't like being flexed much at all, so if it is a one time static install I doubt it will be of much issue.