rumsponge wrote:hi Groggy,
I didnt use the shroudes and cover, yet and looking forward to your measurements. I bought an ozito 550W pump today and hooked it up to the cooler. I cant measure the pressure drop, but the outlet flow was approximately 15L/min so plenty of room for connecting a lot more gear (which will have further impact on flow rate), The pump is rated at >200 L/min (no restrictions to flow) but when I connect a 25m garden hose (12mm) all I have left is approximately 20L/min. I guess the advertised flow rates are just a marketing joke which were obtained under lab conditions.
Anyway, now I just have to wait for my neutralizer to turn up and see how it will work with the cooler. But I am quite optimistic that with gate valves at the PC and RC and several options for hose diameters I will be able to get decent results, flow rate and cooling capacity.
Gives me time to look into more permanent modifications to the cooler and also have to work on my elements and controller.
Cheers, RS
:text-thankyoublue:
RS, I didn't get around to doing the tests today because bloody Mac distracted me and cleaned out my wallet ~x(
I'm getting ready to do a run tonight through the Boka but will get a few numbers from that and I will connect up the new condensers tomorrow to do some flow tests for you.
Regarding your results - the advertised maximum flow rates are only at the discharge of the pump with no fittings connected. I found mine was on the low side as well but surprisingly the head was slightly more than advertised.
Once you connect any fittings to the pump and connect hoses the flow rate will drop dramatically. Your results don't surprise me. It's amazing what a difference a few metres of hose makes. Needle valves are great for control but create a lot of pressure drop. Every little bit of restriction adds up. Size matters :handgestures-thumbupleft:
Consider every part you put in your cooling system and you will be fine.
Cheers
Groggy.