In an earlier contribution to this discussion,
Doctor Drivel wrote:


11C Temperature Difference Between Flow and Return
(81C flow - 70C return)

Pipe Size (mm) - approx kW/hour

15 - 6.0
22 - 13.4
28 - 22.5


What the hell's a kilowatt per hour? [Bearing in mind that a kilowatt in its
own right is a measure of energy consumed/delivered per unit time]
--
Cheers,
Set Square
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