Flue Cube

[face cord]

Im still very skeptical of some of the claims made by it.

 

I have never had much problem with chimney draw using an old unlined chimney no cowl just a chimney pot plus rayburn, don't get smoke in the room etc, like alot of the testimonals say it fixes, but am interested in the other advertized aspect, the claim it can save up to 50% wood.

 

some points from the website:

 

Fuel efficient chimney cowls - The FlueCube - Reduce emissions and burn less wood

 

The FlueCube’s unique design enables the wood burning stove to burn fuel (wood) more efficiently until it is just ash dust at the bottom of your stove.

 

Urm what else are you going to get at the bottom of the stove apart from ash never noticed anything else there?

 

How efficient overall your wood burner becomes with a FlueCube will depend on a number of factors. An old wood burner will greatly benefit having the FlueCube chimney cowl.

 

So that covers a rayburn i presume as its very old.

 

If i knew for sure this 50% claim was true I would get one though but I just don't believe it thb even though my rayburn is very old so probably alot less efficient than a modern stove (no secondary burn), I can't understand how it would make it burn any less wood for same heat output.

 

The rayburn actually gives out more heat once its got going when the flue vent is closed down so less heat goes up the chimney thus reducing the draw not increasing it.

 

This info doesn't seem very scientific?

 

http://www.fluecube.co.uk/PDF/fluecube_testing_01.pdf

 

There saying the extra draw made by the cube installed causes same logs to burn slower but heat output isn't measured?

 

 

Can someone explain why having extra draw burns logs slower

& is more efficient?

Edited December 4, 2012 by face cord

[Bearded Munch]

Do a search on this site there is a thread on it.

[Alycidon]

I have looked at it close up and had an in depth conversation at a trade show with the Uk company owner.

 

Basically its a square with not a lot inside it, he says the shape twists the smoke flow an turns it into a vortex which improves the updraft in a chimney. I am septcial to be honest. The price asked is a lot compared to either anti down draft cowls or rotating cowls both of which are time proven solutions for either removing down drafts or increasing updrafts. I have not had a chimney yet that one of those will not resolve.

 

A

[County4x4]

There was quite a long discussion about this on the chimney sweeps forum, and one guy who was extremely sceptical to put it mildly actually bought one to try for himself. He posted back soon afterwards to say it had actually made a hell of a difference - but he had no idea how it worked - or even how it could work - just that it did!

 

Not a big fan of rotorvent cowls personally - the bearings usually go in the cheap ones and start making a racket that gets transferred down the flue - and of course, like most ADD cowls, they actually reduce draught in calm conditions. I think the H-Pot is probably the most reliable option - usually works where everything else has failed.

[twistedhicap]

H pot was the only soloution on my parents place on top of the clifs right on south coast wind direction used to cause havock !

[Alycidon]

I fitted an H pot on one of my flues, had it down in the spring to check soot build up on the horizontal pipes, practically full, after 2 years above a pellet boiler. So I woudl recommend that you have it off and clean it at least annually as a sweeps brush cannot get there.

 

A

[slasherscot]

i use a vidette cowl same principle, stops the downdraught helps with the draw.....around £70