Hello,
we are currently planning the renovation of a masonry barn that has long been used as a wood storage and workshop, and earlier partly as a livestock stable and grain storage. With all the opinions from various building professionals around me, my head is starting to spin; so I hope to get some independent opinions here :-)
We have basically finalized the floor plan with our architect; but now the question came up as to why we are planning to place our wood stove in the living room with a flue pipe running outside along the house wall, instead of designing an internal flue pipe.
So far, I have only seen an advantage in having an external chimney because it supposedly prevents thermal bridges to the roof and is probably less expensive.
Am I missing something? Would an internal chimney flue actually be more advisable, even in our case? And if so – for what reasons?
The stove is basically meant to just make the living room cozier (visually and, of course, thermally in winter) and is not intended to heat the entire apartment in any way.
Here are some basic details about the building project in case relevant:
Floor area approximately 230 sqm (2,475 sq ft)
If you need more information beforehand, feel free to ask... Thanks in advance 🙂 🙂
we are currently planning the renovation of a masonry barn that has long been used as a wood storage and workshop, and earlier partly as a livestock stable and grain storage. With all the opinions from various building professionals around me, my head is starting to spin; so I hope to get some independent opinions here :-)
We have basically finalized the floor plan with our architect; but now the question came up as to why we are planning to place our wood stove in the living room with a flue pipe running outside along the house wall, instead of designing an internal flue pipe.
So far, I have only seen an advantage in having an external chimney because it supposedly prevents thermal bridges to the roof and is probably less expensive.
Am I missing something? Would an internal chimney flue actually be more advisable, even in our case? And if so – for what reasons?
The stove is basically meant to just make the living room cozier (visually and, of course, thermally in winter) and is not intended to heat the entire apartment in any way.
Here are some basic details about the building project in case relevant:
Floor area approximately 230 sqm (2,475 sq ft)
- 2 floors: ground floor = basement (already existing), living area on the 1st floor (slab already in place)
- Roof will be torn down and rebuilt, but without usable attic space, i.e. probably as a cold roof with nail-plated trusses and metal roofing; insulation will then be in the ceiling towards the living area. An alternative of a sandwich roof was also discussed. This will be clarified in the next few days.
- Heating: gas heating or heat pump (probably the latter), with solar thermal and photovoltaics
If you need more information beforehand, feel free to ask... Thanks in advance 🙂 🙂
K
Knallkörper17 Nov 2016 11:40Bauexperte schrieb:
And exactly how much electricity do the pumps of the gas condensing boiler consume ...?
Regards, BauexperteAre you referring to the circulation pump of a gas condensing boiler? It uses almost no power at all.
B
Bauexperte17 Nov 2016 13:20Knallkörper schrieb:
Are you referring to the circulation pump of a gas condensing boiler? It uses "almost no" electricity. I'm not concerned about the amount; I am only bothered by the cited comment from @andimann about "dirty" electricity. Even a gas heating system doesn't operate without electricity 😉
Regards, Bauexperte
Alex85 schrieb:
In the latter case, the cost calculation for gas is often somewhat underestimated. While the burner itself may be cheaper, the connection is not free (though a one-time fee), the chimney is not free either, and maintenance plus the chimney sweep must be paid for continuously.
A renewable energy share is mandatory. The primary energy calculation is set up so that gas without a renewable share is no longer an option. You mentioned controlled residential ventilation or solar thermal as possible solutions. For us, the conditions for gas were favorable. 595 EUR gross for the house connection, including a free network expansion in the public area. This is certainly not always this inexpensive. The boiler is located in the attic, so everything only goes “through the roof,” meaning no traditional chimney is required.
In terms of the renewable energy share, we just managed to avoid it (submitted documents in December 2014). We insulated 15% better, which counted as a substitute measure for solar thermal. We could also have cited controlled residential ventilation/heat recovery as a substitute measure, which we also have.
As a hobby, we also have a wood stove with 5–6 kW. We integrated the two-flue chimney for it into the living room in such a way that the wall remains flush there. On the roof, the chimney comes out right next to the ridge. The stove operates with room air independence/external combustion air supply/DIBt certification – so it can be combined with controlled residential ventilation/heat recovery without the need to install a pressure differential monitor.
Hi Bauexperte...
Ah, so a heat pump doesn’t have a circulation pump? The water just flows through the underfloor heating by hand, or how does that work?
By the way: these units consume between 10 and 50 watts during operation, which is really negligible.
Best regards,
Andreas
Bauexperte schrieb:
And how much electricity do the pumps of the gas condensing boiler actually consume...?
Ah, so a heat pump doesn’t have a circulation pump? The water just flows through the underfloor heating by hand, or how does that work?
By the way: these units consume between 10 and 50 watts during operation, which is really negligible.
Best regards,
Andreas
Hi,
I never claimed otherwise. But the electricity consumption required to regulate the flame is truly minimal. Everything else should also be present with heat pumps.
Yes, heat pumps run on dirty electricity in winter, even very dirty. And just because you don’t want to hear it, or some politicians with no scientific background decide to push nonsense, doesn’t change the laws of physics.
You can’t change the laws of physics at a meeting table!
Even if many lobbyists and politicians in Berlin throw themselves on the floor and shout loudly: “I want, I want…” that won’t suddenly make a mouse eat a cat or water flow uphill.
Best regards,
Andreas
Bauexperte schrieb:
I'm not concerned about the amount; what bothers me is the repeated reference by @andimann to "dirty" electricity. Even a gas heating system doesn’t operate without electricity
I never claimed otherwise. But the electricity consumption required to regulate the flame is truly minimal. Everything else should also be present with heat pumps.
Yes, heat pumps run on dirty electricity in winter, even very dirty. And just because you don’t want to hear it, or some politicians with no scientific background decide to push nonsense, doesn’t change the laws of physics.
You can’t change the laws of physics at a meeting table!
Even if many lobbyists and politicians in Berlin throw themselves on the floor and shout loudly: “I want, I want…” that won’t suddenly make a mouse eat a cat or water flow uphill.
Best regards,
Andreas
The share of renewable energy in Germany’s electricity mix is about 35%.
Of this 35%, photovoltaic accounts for 10% and solar thermal energy for 2%, which corresponds to 3.5% and 0.7% of the overall electricity mix, respectively.
The share of electricity from solar (thermal) energy and therefore from seasonally dependent sources is very low. I don’t understand how the electricity mix would change so drastically in winter. To understand this, I would prefer facts; so far, I have only seen loud claims without evidence.
Of this 35%, photovoltaic accounts for 10% and solar thermal energy for 2%, which corresponds to 3.5% and 0.7% of the overall electricity mix, respectively.
The share of electricity from solar (thermal) energy and therefore from seasonally dependent sources is very low. I don’t understand how the electricity mix would change so drastically in winter. To understand this, I would prefer facts; so far, I have only seen loud claims without evidence.
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