Does dirty glass lower heat output?

[bigealta]

I'm not sure how to figure this out? Been running 24/7 for a while and the glass gets "dusty or grey ashy".
This "thickness" of the ash varies, and with hot reloads, is really uncleanable until the stove cools.

The black soot is long ago burned off but this would also be something to consider as many people have sooty glass.

Anyone have any ideas as a stove like my f400 kicks much of its heat out thru the glass.

 

[all night moe]

If you have a IR gun you could run some tests. Clean half the glass and check readings on a hot burn. Might have to use a black sharpie to have a spot to take readings from.

 

[EbS-P]

Yes but not by much is my feeling. If you increase the opacity you probably have more absorption and/or scattering. But this makes the glass hotter and it will radiate more. So I don’t think it matters at the lower level we’re operating at.

My experiment would be with to record the temperature change of some object held a certain distance away from the window for say 60 or 120 seconds. Repeat under similar fire conditions and stt but with clean glass.

If the dirty glass does reduce output it means higher firebox temps and flue temps then you would reduce air to bring back down . My point is if you want 10kw of heat you will air air to output that and the cleanliness of your glass doesn’t matter.

I like the first couple fires after I clean it though. I should do it more often. I have not cleaned it this season but it started clean.