Heat transfer from stoves that have several doors fitted with mica
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Hi , This is just a query . You lads that own those beautiful circular stoves fitted with lots of doors fitted with mica , is there a increase in heat into the room that it's fitted in if you left them open ? Know that if they are closed the stove will increase in heat and will transfer heat , but wondered if some of the doors were left open it would feel more like a open fire . Know with my ease dragon stove it heats up great , but I left the doors open and it felt a lot hotter in the room . Not concerned about amout of coal used , just wondering . Any comments gratefully received .
- freetown fred
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Why is my first thought about CO?????????????? Hell, I have no idea.
- lsayre
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Open fireplaces are (at best) roughly 17% efficient at transferring their heat into a home, and 'so called' "air tight" boxes are 50% to 80% (or more?) efficient at satisfying the very same task. That should tell you something about the effect of compromising a stoves degree of air tightness.
PS: No stove can possibly function at the level of 100% air tightness. The object is to provide somewhere between 15% and 25% oxygen in excess of that needed for theoretical combustion completeness, as at somewhere within that level of O2 excess combustion efficiency and is at its 'real world' maximum (with the specific excess being fuel source dependent). The biggest problem here is that air is only roughly 20% oxygen to begin with, so in providing it in 20% excess plenty of heat inevitably goes out the stack whether you believe this is happening or not, even for the very best of designs, making anywhere near 100% thermal transfer efficiency totally impossible, even if you can consistently by some miracle achieve the ideal of 100% combustion efficiency.
PS: No stove can possibly function at the level of 100% air tightness. The object is to provide somewhere between 15% and 25% oxygen in excess of that needed for theoretical combustion completeness, as at somewhere within that level of O2 excess combustion efficiency and is at its 'real world' maximum (with the specific excess being fuel source dependent). The biggest problem here is that air is only roughly 20% oxygen to begin with, so in providing it in 20% excess plenty of heat inevitably goes out the stack whether you believe this is happening or not, even for the very best of designs, making anywhere near 100% thermal transfer efficiency totally impossible, even if you can consistently by some miracle achieve the ideal of 100% combustion efficiency.
Last edited by lsayre on Wed. Mar. 21, 2018 8:40 am, edited 4 times in total.
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Thanks , as I said previously felt warmer leaving the door open , but probably only initially , totally get what your saying about stove efficiency. Thanks
- warminmn
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If the CO didnt get you first the fire would probably go out too, if It was anthracite coal you were using. It needs under fire air.
I have cooked inside of my stove with the door cracked for quite a while so my cooking handle can stick out of the stove (one of those outdoor mesh cook thingies) with no problem but I wouldnt want it fully open. Your results may vary on that.
I have cooked inside of my stove with the door cracked for quite a while so my cooking handle can stick out of the stove (one of those outdoor mesh cook thingies) with no problem but I wouldnt want it fully open. Your results may vary on that.
- Pauliewog
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Thanks right ...... And the main purpose of the mica windows is to provide that radiant heat and also give the effect of an open fireplace.
When the oat's are in the single digits and below, and my stove is glowing bright, I have to move the rocking chair back to where it is in the picture. Otherwise my face feels like I fell asleep on the beach on a hot Sunny day.
The only time I open the top doors is if I want to clean the fly ash off the mica. When I do this the over fire air cools down the stove.
Paulie
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Lovelies stove, Pauline! May I ask, is the top/forward pipe a double heater flue that directs warm air into another part of the house?
Thanks, Jeff
Thanks, Jeff
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Er, lovely Paulie.
- Pauliewog
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Thanks Jeff....... And no apologies required...... I've been called worse
Yes, the heat from the double heater pipe on the front feeds into the adjacent room which contains my stoker.
When the upstairs thermostat calls for heat the stoker blower is activated and distributes the heat throughout the house.
When the outside temperature drops into the 20's the stoker takes the remainder of the heating load.
My original plan was to only use it in the shoulder months, but I enjoy the warm glow and it's still on its initial start up fire from last fall.
Paulie
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- Other Heating: Gas central heating / antique cast iron radiators
So jealous of your stove , it's absolutely beautiful, I've always wanted one like you own , but the cost of buying one shipping/ crating , and 20%import duty to the uk is not viable , you end up paying practically the value of the stove in getting it over here . But I can dream ha ha .
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Thanks, Paulie. Very cool setup.
Jeff
Jeff
- freetown fred
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W, I'm thinkin you got some decent stoves over your way. PM coalnewbie, he might have some thoughts to share with ya.