condenser in chilled water?

[embro]

I just found an OLD water chiller, the guy said the temps drop to about 5C, but since i want way lower temps, i'll keep building my direct die setup, but my questions is:
(btw i'll use r404)

What would be the effect of running the condenser in chilled water(5C to 10C)? much much lower temps? or just some Celcius down?

Is it dangerous or anything?

The unit is rather small so it look interesting.

Thanks

[blinky]

this would be like a mini-cascade

but yah it would prolly help, how much i dont know

[embro]

yea a mini cascade... and since im new to this i dont want to play with linked units... kind of dangerous to me, but this look way safer, i just dont know what could be the result.

[kommando]

Heres something i was going to do: http://www.xtremesystems.org/forums/showthread.php?s=&threadid=28883&highlight=Basic+Cascade

[embro]

i saw the unit in person today, it is small, very small, and it works, i had no thermometer but the water was probably around 5C.

If any of the pros can anwser me i'd appreciate it.

Thanks for your time.

[Gary Lloyd]

It's not quite that simple. When you cool a condenser, it gives the performance a boost... to a point.

The amount of refrigerant flowing through a cap tube depends upon how much pressure is pushing it through. Lower condenser temp means lower condenser pressure. As temp is reduced, all is well, and performance improves, until a point is reached where not enough refrigerant is flowing to handle the load. Then performance falls off a cliff and temps skyrocket.

We can compensate for this by adjusting cap tube size, but then it will not work very well unless/until the condenser is cooled. In other words, this can be done, but it is not just a matter of sticking the condenser in chilled water.

[embro]

Thanks alot Gary, this is something i could not have known unless i would have read quite alot of documentation about it, and theres not much in-depth docs on internet. I'll have to get a copy of your book soon.

once again, thanks alot Gary.