Re: Help with pump sizing and head loss calculation

Dear ElMalo:

"ElMalo" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Thanks again everybody.  Lot's of great information which is exactly
> what I was searching for.  Sometimes I can Google all day to no avail
> just because I don't know what words to search. I also got
> straightened out on a few things.  That bit about the two middle
> circuits having more flow than the others was some remnant of
> information concerning passive solar collectors; a completely
> different dynamic there.

Yes.  When transferring heat out of water, the kinematic viscosity changes.
This will allow more hot water to enter that space more easily.  The net
result on almost any "reasonable" design from transferring heat from water
to a space is that you achieve a net "constant" temperature surface.  Not
so on transferring heat *to* water.

Good luck.

David A. Smith