COAL FIRES

[BOB D.O.L.E]

What is the heat effeciecy for a coal fire.

 

[solo]

burny, burny.

 

[Vic Spanner]

Will all depend on the quality of the coal your burning and the quantity.
Northern coal is better than southern shandy coal

 

[Nixt]

Very difficult to measure the efficiency of a coal fire as most heat will disappear upwards into the chimney. However a multifuel stove which can burn coal is a baffled appliance which will radiate heat into the room and I have read claims that they could be over 75% efficient.

 

[Baxmax]

What is the heat efficiancy of a zippo lighter

 

[Stivino]

The heat doesn't go straight up the chimney, it's deflected into the room by the slope of the fire bricks that form the fireplace. According to the coalman I have, most of the coal in the country nowadays comes from Poland.
I live in an area that used to be covered with pits, there's only one operating now and it's open cast. It'll probably be mined out in a year or two.
Get a big bucket on and take your shirt off. Oh, and lashings of burny hot water too, I've measured mine at 92°C from the kitchen tap.

 

[oilman]

The efficiency of a coal fire is 100%. 100% of the heat it produces gets lost in the end.

 

[Stivino]

Doesn't all heat get lost in the end, isn't that how heating works? I have radiators too, they lose their heat into the rooms. My mate's storage heaters do the same thing funnily enough.

 

[doyle]

Will all depend on the quality of the coal your burning and the quantity.
Northern coal is better than southern shandy coal

oi yer scruffy northern numpty, why mine coal when we had northerners to do it all, besides if wasnt for maggie thy'll all be deeeed int bott' o pit lad, so dont be sayin nowt about are lager when yours is full o fizz and make theh fart all neet

 

[BOB D.O.L.E]

Found it out 32% numbsculls ....

 

[kevplumb]

Will all depend on the quality of the coal your burning and the quantity.
Northern coal is better than southern shandy coal

oi yer scruffy northern numpty, why mine coal when we had northerners to do it all, besides if wasnt for maggie thy'll all be deeeed int bott' o pit lad, so dont be sayin nowt about are lager when yours is full o fizz and make theh fart all neet

you arse you mebbe should have been on the lines

 

[solo]

So a coal fire is 32% numsculls efficient. Anyone know the percentage numscull efficiency of my one bar electric fire?

 

[boilerbeasty]

Depends on the type of flue..if its completely open like the cast iron replica inset I've got, the efficiency is awful. My in laws have a smaller stone built one, which throws much more heat out, and has an unfashionable stone-brick surround which also retains tons of heat.
I'm sure if you can burn the coal in something a bit more closed you would get more heat in the room.
As for figures, I have read between -10% and +15%. Yes, negative efficiency! i.e. they can cool the house if the draw up the chimney is high enough, they will suck warm air into the room and up the chimney.
I could move to a gas/flame effect one but you don't get the caveman - ug - me create fire experience. May be I would just have to buy a zippo to compensate.

 

[doyle]

Will all depend on the quality of the coal your burning and the quantity.
Northern coal is better than southern shandy coal

oi yer scruffy northern numpty, why mine coal when we had northerners to do it all, besides if wasnt for maggie thy'll all be deeeed int bott' o pit lad, so dont be sayin nowt about are lager when yours is full o fizz and make theh fart all neet

you a**e you mebbe should have been on the lines

neh thehll not get londoners dowern pit lad, us city folk int into gettin hand dirty, we leaves it to folk like you up yonder.