Rear or top stove flue exit?

smcqis

Is there any differences from have the flue exit of your stove to the top of to the rear? Any advantages or disadvantges of each or are they both the same

HappyMJ

The space and location will dictate the flue exit. Either is fine.

grahamc2003

smcqis wrote: »

Is there any differences from have the flue exit of your stove to the top of to the rear? Any advantages or disadvantges of each or are they both the same

You can use a bigger pan to make your mulled wine with a rear exit. Our smallest pan only just fits with our exit at the top.

I'm thinking of moving the stove forward into the room by using the rear exit (muich better for getting the stove heat into the room). I think there is a very slight advantage of a slightly better draw with a top exit, but that is partly because the extra flue pipe of a rear exit radiates more heat than a shorter top one.

smcqis

I was just curious more than anything as mine is a rear exit

werdnareklaw

I have two stoves, one rear and one top and find the top flue much easier to light as there is a better draw. The heat radiated from a top flue is also beneficial, mine is 5 feet long and the HETAS bloke said it should provide an extra kilowatt :whistle:

[Deleted User]

werdnareklaw wrote: »

I have two stoves, one rear and one top and find the top flue much easier to light as there is a better draw. The heat radiated from a top flue is also beneficial, mine is 5 feet long and the HETAS bloke said it should provide an extra kilowatt :whistle:

At least if not more... That length of exposed flue pipe gives gets seriously hot All radiated into the room

With a rear exit setup all that 'extra' heat is lost...

grahamc2003

jeepjunkie wrote: »

At least if not more... That length of exposed flue pipe gives gets seriously hot All radiated into the room

With a rear exit setup all that 'extra' heat is lost...

Don't understand the last bit. Whether the heat is lost depends on where the rear exiting stove pipe goes. In my case, a rear exit pipe would snake around to the chimney - the same one as the top exiting flue pipe now goes, adding about 3 feet to the exposed stove pipe length. If the rear exiting pipe disappears into an enclosure, then the heat will mainly be lost.

I too think 1kW extra room heat from seven feet of exposed stove pipe is an underestimate - it probably gets hotter than the stove surface.

werdnareklaw

grahamc2003 wrote: »

I too think 1kW extra room heat from [STRIKE]seven[/STRIKE] five feet of exposed stove pipe is an underestimate - it probably gets hotter than the stove surface.

You shouldn't believe what these HETAS engineers say

Just checked mine, the flue 18" above the stove is 300°F and the top surface the same .

grahamc2003

werdnareklaw wrote: »

You shouldn't believe what these HETAS engineers say

Just checked mine, the flue 18" above the stove is 300°F and the top surface the same .

Hmm, nothing to do with hetas engineers.

So what's the average temperature of your stove surface and the average temperature of your flue pipe? I still expect (note not saying as a fact, just an expectation) that the exposed stove pipe is hotter. I'd say the bricks inside the stove more or less guarantee that.

werdnareklaw

I don't know what the average is but gave the stove some wellie earlier and the top was just over 350F and the pipe a shade over 300F. The configuration inside this stove is such that there aren't any bricks immediately below the top plate, only a ceramic baffle over which the flue gases pass from the rear.

WillowCat

I could have had our stove fitted with a top flue, but the rear would have been only just the minimum distance from the rear of our opening.

By fitting a rear exit flue the stove is much more into the room (about half of it projects in front of the chimney breast) and I think this helps the convection currents in the room, distributing the heat more evenly.

As it's a Morso squirrel, we also get to see the squirrel moulding on the sides a little better too.