Delux condenser & 12K BTU Rotary

[MeltedDuron]

Is it okay to use a Delux condenser from Cold Ice (Pat) that are rated for 500W with a 12,000 BTU rotary?

I will have a DSHC between the compressor and condenser.

Fans are 240v but i might change to some HIGH CFM Deltas as the case is PC case.

[bartx]

In my opinion it's far to small. This rotary probably has 1HP, so that's 750W + 250W heatload + some reserve (200-300W) = I would go for 1,5kw condenser.

[clear cmos]

yeah I think too small, better suited 2kw condenser

[fatguy1992]

Little off topic sorry, but I have four condensers, however they are from AC unit so I don't know what they are rated as (in kw). Is there a way I could calculate their kw rating?

Thank you

[[XC] gomeler]

If you are trying to stuff a single-stage into that small of a box you are best getting a smaller compressor.

Little off topic sorry, but I have four condensers, however they are from AC unit so I don't know what they are rated as (in kw). Is there a way I could calculate their kw rating?

Thank you

Find the BTU rating on the original AC unit, that'll tell you how much heat the condenser was rejecting after adding in a little to compensate for heat of compression.

[fatguy1992]

If you are trying to stuff a single-stage into that small of a box you are best getting a smaller compressor.



Find the BTU rating on the original AC unit, that'll tell you how much heat the condenser was rejecting after adding in a little to compensate for heat of compression.

Its a 12,000BTU unit/3.5kw unit? So the condenser is around 4kw?

[[XC] gomeler]

Is that an old Apple G5 chassis

There isn't any chance you could source some smaller rotary compressors? We have some cheap 1/2hp rotaries here in the US, they would do the trick for you, shame you are on the other side of the globe.

If you are deadset on doing the watercooling thing maybe you should look into some brazed plate heat exchangers to use as your condensers. They are stupidly compact which will give you lots of room to stuff radiators into that chassis in order to dissipate all the heat from compressor. You are going to be rejecting something like 1kW of heat through your radiators, going to need a lot of fins and air Your other option would be to do a remote radiator or water barrel.

Also, if you go this route you'll probably want to look into some high-side pressure cut-outs. Fans typically fail and give you a lot of audible warning but pumps have the tendency to just die. Two 12k BTU compressors pumping heat laden refrigerant through your heat exchangers will quickly hit dangerous pressures without water flowing through the heat exchangers.

[[XC] gomeler]

http://cgi.ebay.com/NEW-Air-Conditio...d=p3286.c0.m14

that is the cheapest one out there right now.

Problem is you guys use single-phase 220vac, correct? There are often some 220vac 1ph compressors available on ebay in the US but they are always gigantic, usually 220vac 1ph is reserved for "large" applications where 110vac 1ph can't safely pull enough current.

[EvoCarlos]

but you will never make anything that works pete!

[[XC] MarioMaster]

If you were actually pumping 12,000 btu/hr that's a heat output of 3500 watts, not including heat from the compressor motor. I'd say you're way undersized with a 500w condenser and even a huge de-superheat coil.

At even 1/4th capacity of the compressor you're at >800 watts before compressor heat load.

[Foamy]

any news about compressors you ordered?

[cooling storm]

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