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Marci · 01-26-2005, 08:16 AM

Discharge phasechange unit. Cut evaporator head off phasechange unit. Replace with 1/2" OD Copper Tube, lots of it, coiled inside a bucket. Replace capillary tube on the phasechange unit with about 1metre of 0.028 ID. Replace condenser with an old BeCooling Aquacoil and 100CFM fan. Recharge with r507 or r404a. Reinsulate. Fill bucket with coolant. Run pipe out of bottom of bucket to pump inlet mounted outside and below the bucket. Run pump outlet to manifold. Run return from blocksetup back into top of bucket. Insulate the bucket. Insulate all tubing. Insulate the blocks. Measure coolant temps AFTER the blocks but before returning to the bucket. If it's lower than ambient, don't use any rads in the watercooling side of things. If it's higher than ambient, add rads to bring it back down to ambient. NOW you have a waterchiller that's worth having. A stock Vapo with less than a 1" diameter contact area with a waterblock is about as effective in the setup above as a flea trying to move a juggernaught by leaning against the back wheel.

However, then you're back to the bog standard waterchiller that everyone's been using for years.... but beware that if you ever switch it off you may have to wait 45 minutes for the whole system to repressurize before it'll start back up as the compressor is ridiculously weak in comparison to 240v compressors. Or stick a solenoid between low pressure side and high pressure side so that when unit is switched off solenoid opens and isntantly repressurizes the system.

Build the above, pipe it in parallel, then compare it to the EXACT same setup piped in series. I bet series beats ya.

Either way, nothing particularly new.... just another DIY way of doing what people have been DIY-ing for at least 8 years, all the info for which is plastered all over the net in great detail on sites like xtremesystems etc.

That's the VapoChill aspect of it all.... but seeing as you've dropped that...

Long & short of it is, using the exact same components, the flow & head loss etc inflicted by running in parallel far outweighs the benefits if compared to series. If you want the facts to back that statement up, read these forums, as it's plastered all over em in various forms in various places in various threads.

S'my opinion!

01-26-2005, 08:16 AM	#21
Marci Cooling Savant Join Date: May 2003 Location: Wakefield, West Yorkshire, UK Posts: 486	Discharge phasechange unit. Cut evaporator head off phasechange unit. Replace with 1/2" OD Copper Tube, lots of it, coiled inside a bucket. Replace capillary tube on the phasechange unit with about 1metre of 0.028 ID. Replace condenser with an old BeCooling Aquacoil and 100CFM fan. Recharge with r507 or r404a. Reinsulate. Fill bucket with coolant. Run pipe out of bottom of bucket to pump inlet mounted outside and below the bucket. Run pump outlet to manifold. Run return from blocksetup back into top of bucket. Insulate the bucket. Insulate all tubing. Insulate the blocks. Measure coolant temps AFTER the blocks but before returning to the bucket. If it's lower than ambient, don't use any rads in the watercooling side of things. If it's higher than ambient, add rads to bring it back down to ambient. NOW you have a waterchiller that's worth having. A stock Vapo with less than a 1" diameter contact area with a waterblock is about as effective in the setup above as a flea trying to move a juggernaught by leaning against the back wheel. However, then you're back to the bog standard waterchiller that everyone's been using for years.... but beware that if you ever switch it off you may have to wait 45 minutes for the whole system to repressurize before it'll start back up as the compressor is ridiculously weak in comparison to 240v compressors. Or stick a solenoid between low pressure side and high pressure side so that when unit is switched off solenoid opens and isntantly repressurizes the system. Build the above, pipe it in parallel, then compare it to the EXACT same setup piped in series. I bet series beats ya. Either way, nothing particularly new.... just another DIY way of doing what people have been DIY-ing for at least 8 years, all the info for which is plastered all over the net in great detail on sites like xtremesystems etc. That's the VapoChill aspect of it all.... but seeing as you've dropped that... Long & short of it is, using the exact same components, the flow & head loss etc inflicted by running in parallel far outweighs the benefits if compared to series. If you want the facts to back that statement up, read these forums, as it's plastered all over em in various forms in various places in various threads. S'my opinion!