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Originally Posted by tofu
thank you very much. that was quite helpful. i shot a PM over to gerwin and he's going to give me a few tip's before i start my project. i may try make some original modifications of my own.
and yes, i will be soldering.
the problem with the garage radiator you showed me, razor, is the size. i'd make something using the same amount of copper, but it'd have to be wider so i can mount it on my wall. hopefully performance won't be affected too much.
if i used 90 degree elbows on gerwin's design to have more verticle pipes would performance be decreased or increased? i would imagine flow rate would be hurt.
oh and for pumps i was planning on using the swiftec mcp600 or the aquaxtreme equivilant. is that a bad idea? maybe i need something with higher gph like the L30?
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There is probably a tangible benefit from mounting the radiator on the floor since it is much cooler and because the concrete slab can absorb a lot of heat, that goes for burying it too. If it's wall mounted then you just have air for cooling but maybe that's not so bad. :shrug:
As for what pump to get I'm not all too sure. Obviously the MCP600 and the D4 are highly recommended for their pressure but the 15' of copper pipe by itself doesn't give much head loss so the L30 wins by a wide margin. When you add in all the fittings and whatever length of tubing to get to your pc, plus the water block(s) it will be a different story. The pressure drop will probably fall around where the two pumps are equal. I made a graph of the L30, MCP600, and the copper tubing.
I'm wondering how you could estimate the pressure drop of the Gerwin style with all those T's in there. Copper.org's table shows an elbow as 1 extra foot and a side branch as 2 extra feet, I don't understand that part though. Why does a T have twice the pressure drop of an elbow?