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Originally Posted by redleader
Why not just provide C/W per dP graphs? Given that, are C/W verses flow graphs even relevent? Its not like most people have any way to gauge flow, while their pump max head is published, and you can make educated guesses about what a radiator does to that figure.
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it was my understanding that C/W per dP graphs were derived from dP per flowrate data
i dunno, just thinking of billa's work