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Post by smileypete on Nov 7, 2017 14:05:22 GMT
But does your stove have a baffle plate fitted? Yes. Perhaps I should remove it? But then doesn’t that reduce efficiency? I do from time to time remove the baffle plate to clean the soot and debris from the top. If you can handle the responsibilty in a grown up way which I'm sure you can. As for efficiency I'd expect most of the heat will be recovered through the single skin flue will it not? Maybe do some IR temperature measurements if you like, at the bottom and top of the flue both with the baffle and without, with the stove on tickover. If I was fitting a stove for myself these days, I might even consider part uninsulated say for 2 or 3 ft coming out of the stove, then the rest insulated, provided the bits of flue join up OK.
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Post by smileypete on Nov 7, 2017 14:24:07 GMT
These cast stoves can suffer from corrosion which causes them to swell at the joints and become stressed, so when not in use ensure the chimney is capped, with stove vents wide open, and remove ash as it can collect damp. We’ve had ours for 8 years and 3000 engine hours, good so far. But also, make sure the entire weight of the chimney isn’t resting on the top of the stove, and/or the chimney doesn’t expand and push down on the top of the stove when it’s hot. Ideally the flue should have a little give where it passes tho the chimney/deck collar, but I s'pose with a mild steel flue it'll inevitably rust solid. Best suggestion I saw was on CWDF, to rest the bottom end of the flue on a ring of fire rope inside the stove collar acting as a gasket, ie not hard against the stove top. Would need the collar on the stove to be reasonably deep, also sealed with envirograf or something like that. One thing in favour of a stainless flue is that it's thinner and so much lighter, and also less likely to rust solid in the chimney collar. On Ebay there's telescopic flues, maybe the best way to handle any expansion? eg: www.ebay.co.uk/itm/Stainless-Steel-Telescopic-Chimney-Flue-Liner-Ducting-Rigid-Pipe-Tube-All-Sizes/252006628747
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Post by Deleted on Nov 7, 2017 16:55:02 GMT
I'm interested in why insulated flue is now standard. On the outside I can understand, so the smoke doesn't cool in the chimney and keeps rising. But inside the boat, surely it's best to have uninsulated so you get maximum heat into the space. Anyway I'm genuinely intetested. A minor issue I suppose but I wish ours had been as I occasionally used to use it to steady myself as I came down the cabin steps into the boat. No problem in the summer but the first time I did it each winter I knew about it......
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Post by bromleyxphil on Nov 8, 2017 15:33:13 GMT
I am now starting to look around at stoves and went to a stove shop today where I was told that cast iron stoves are better than steel as they distribute the heat more evenly and the current fires with big windows give out more heat as they are flatter giving more area on the front. Both points sound like bo**ocks to me as i cant see the heating of two metals being so different and I thought most heat comes from the metal and not the air washed glass. By the way the woman in the shop recommended this stove www.gr8fires.co.uk/aarrow-ecoburn-plus-7-kw-flexifuel-multi-fuel-wood-burning-stoveSurprisingly given her advice its steel and small windowed. I am interested however in why some folk prefer steel?
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Post by Telemachus on Nov 8, 2017 16:17:36 GMT
There’s heat, and heat. The heat coming out of the window is relatively high frequency infrared radiation. Like you used to get from electric bar fires or a bonfire. This is because it’s being radiated by the glowing bits of the fire. The stove body is much cooler and so radiates at a lower frequency so it doesn’t have as much energy, however it also heats the air by conduction and convection. We get most of our heat from the latter -because the glass is usually dirty!
i would have thought 7kw was too much for a boat.
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Post by kris on Nov 8, 2017 16:25:27 GMT
i would have thought 7kw was too much for a boat. Depends on the size of the boat. 😃
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Post by smileypete on Nov 8, 2017 16:43:08 GMT
i would have thought 7kw was too much for a boat. Depends on the size of the boat. Depends on the level of insulation - or not! Usually with boats the minimum output when burning smokeless is important too to keep it ticking over and staying in for longer. Partly this is down to well designed air controls and well sealing ash and fuel loading doors.
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Post by kris on Nov 8, 2017 16:58:31 GMT
Depends on the size of the boat. Depends on the level of insulation - or not! Usually with boats the minimum output when burning smokeless is important too to keep it ticking over and staying in for longer. Partly this is down to well designed air controls and well sealing ash and fuel loading doors. it was a throw away comment, obviously the amount of insulation will effect how much heat you need to keep a space warm. You could also say it depends on how many windows you have and what size they are.
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Post by Telemachus on Nov 8, 2017 17:28:05 GMT
i would have thought 7kw was too much for a boat. Depends on the size of the boat. It’s 57” x 10’
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Post by kris on Nov 8, 2017 17:30:11 GMT
Depends on the size of the boat. It’s 57” x 10’ but how much insulation does it have? And how many windows?
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Post by Telemachus on Nov 8, 2017 17:56:28 GMT
but how much insulation does it have? And how many windows? Bearing in mind it’s a new build, one would hope the insulation was reasonable. Windows are a factor but not massively so. Our boat has plenty of windows but the 4kw Squirrel is plenty for 59’ x 7’ and bearing in mind heat is lost according to the external area, not the volume, i think upping that by another 3’ width doesn’t justify 7kw.
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Post by kris on Nov 8, 2017 17:58:39 GMT
I should know better than try to introduce humour into a thread where there are experts holding court.
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Post by Telemachus on Nov 8, 2017 18:13:46 GMT
I should know better than try to introduce humour into a thread where there are experts holding court. Nothing wrong with humour, but perhaps it better not to potentially cause the OP to become confused. Your humour is valued but then it’s also important that the OP doesn’t waste his money on the wrong stove.
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Post by kris on Nov 8, 2017 18:26:13 GMT
I should know better than try to introduce humour into a thread where there are experts holding court. Nothing wrong with humour, but perhaps it better not to potentially cause the OP to become confused. Your humour is valued but then it’s also important that the OP doesn’t waste his money on the wrong stove. would you like to point out where I've posted anything that will mislead the op?
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Post by Telemachus on Nov 8, 2017 18:33:03 GMT
Nothing wrong with humour, but perhaps it better not to potentially cause the OP to become confused. Your humour is valued but then it’s also important that the OP doesn’t waste his money on the wrong stove. would you like to point out where I've posted anything that will mislead the op? I said confused. You said mislead. Completely different things. Anyway I see you did put a smiley after your post, didn’t notice it the first time around.
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