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Cathar · 02-22-2003, 06:46 AM

I believe the issue with Ben's estimates is that he was taking BillA's radiator pressure drop results, and possibly using the BigMomma radiator, which in BillA's tests had 3/8" barbs fitted. Using nicely bored out 1/2" barbs results in a much lower pressure drop for a radiator.

As nikhsub1 stated an estimate of 6.5lpm, I'm seeing 6.7lpm flow rates here with an Eheim 1250, a heater-core and a White Water. 5.0lpm flow rates using a Eheim 1048 instead of the 1250.

02-22-2003, 06:46 AM	#16
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	I believe the issue with Ben's estimates is that he was taking BillA's radiator pressure drop results, and possibly using the BigMomma radiator, which in BillA's tests had 3/8" barbs fitted. Using nicely bored out 1/2" barbs results in a much lower pressure drop for a radiator. As nikhsub1 stated an estimate of 6.5lpm, I'm seeing 6.7lpm flow rates here with an Eheim 1250, a heater-core and a White Water. 5.0lpm flow rates using a Eheim 1048 instead of the 1250.