I have considered using aluminum tubing. No luck finding it thoughCould you just try a whole bunch of Pex? I don't know what you are wanting to use this for. It doesn't conduct heat anywhere near as good as copper, but it doesn't cost anywhere near copper either. Someone around here would likely have some figures kicking around relating the conductivity of Pex to copper. Or you might find it with some googling.
That pic you posted looks like trouble waiting to happen, IMO - but I know not much about what it's actually showing.
Water always takes the easy path,so if a header type setting some water may get heated more than other but when doing a [zig-zag] all water is getting heated evenly, this is how i did my dhw. heater in the tank with 3/4 hard pipe and it seems to be working fine, I only have 24 feet of finned pipe but as long as I have 150* or more it heats water ok, more the better they say.well that is one coil, thanks for the link! But I am probably going to go with 1" or mixture of copper pipe, whatever I can get. (I have a plumber friend that owes me for fixing his computer and he promised me some more pipe)
So, If I do hard pipe HX (in my round tank) should I make a header/riser (like solar collector) type or 1 long zig zag?...are there advantages/disadvantages?
i ALWAYS CLEAN MY COILS ONCE A YEAR, HAVE TWO VALVES ON THEM AND RUN LIME-AWAY OR CLR THREW THEM GET ALL THE SCALE OUT. jUST LIKE ANYTHING ELSE HAVE TO TAKE CARE OF THINGS TO GET THE LIFE OUT OF THEM. IF YOU HAVE SAY HAVE 300FOOT OF COPPER IN A COIL THE WATER PREASURE MUST BE HIGH OR YOU JUST GET A DRIBBLE OUT THE END WITH ALL THE FRICTION IN THE PIPE?? ALL I HAVE TO GO BY IS TANK I BUILT, LIKE I SAID I PUT 70FEET OF 5/8 TYPE L COPPER AND IT WORKS FINE,I GET ALL HEAT I NEED IF TANK IS 150* WATER COME OUT IS SAME [AND I AM TALKING COLD MAINE WELL WATER GOING IN] SO WHY WOULD 300FEET DO ANY BETTER? JUST REDUCE FLOW IN PIPE, I GUESS MORE IS BETTER BUT REALLY ?? TO EACH HIS OWN,,Domestic coils in oil/gas boilers are always finned copper. They also need the boiler to be at least 140F to work with any reasonable performance. Usually the boiler must maintain 160F for a bath to be drawn or around 4-5gpm@70 degree rise. This is why guys have lots of copper in the tank, to get a lower delta dur to the greater surface area. Domestic coils are very innefficient (but cheap) and are prone to scale buildup.
TS
I would sugget a header with 60 foot loops. If you look at the manufacturers that build high performance coil in tank HX, like this TurboMax brand you generally see multiple loops headered together. Pressure drop is the main reason, surface area and the ability to get a lot of surface area inside the tank is another.Thanks guys but I still would like to know: So, If I do hard pipe HX (in my round tank) should I make a header/riser (like solar collector) type or 1 long zig zag?...are there advantages/disadvantages?
Well thanks for the encouragementGood Luck!!
We use essential cookies to make this site work, and optional cookies to enhance your experience.