FridgeFreezer Posted February 5, 2008 Share Posted February 5, 2008 WARNING: This is tragically anal and over-complicated but I won't hear the end of it until someone finds an answer... Since I knocked up a log burner the lodger has been obsessing about optimising its performance. He has decided the 3x 12mm holes in the bottom are strangling its performance and need to be made larger. However, rather than just drill a few more holes and see what happens, he's started doing calculations based on airflow, exhaust diameter, gas expansion due to temperature change, etc. etc. Yes, he needs to get out more, I've told him, but he won't stop going on about it until he finds an answer that is satisfactorily scientific / accurate. So, does anyone have any information / ideas on what a decent air intake size is for a log burner with a 3" bore chimney? Oh and it doesn't have to be right, it just needs to sound scientific enough to shut him up and stop him from tinkering with something that works fine! Quote Link to comment Share on other sites More sharing options...
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