Good evening everyone,
In our current rental apartment, we have a very cozy wood stove that we often sit in front of in the evenings, watching the flames. Since we are about to start building a prefabricated house with KfW 40 EE standard (timber frame construction), we naturally want to have something similar there as well.
According to online sources, the heat input from such a wood stove into a new house is much too high because the heat is released very directly and without buffering into the room.
Does anyone have any ideas on how to enjoy a wood stove’s flames in a low-energy house without it becoming overwhelming? 😀
Could a stove installed inside the chimney help?
Best regards from Passau
In our current rental apartment, we have a very cozy wood stove that we often sit in front of in the evenings, watching the flames. Since we are about to start building a prefabricated house with KfW 40 EE standard (timber frame construction), we naturally want to have something similar there as well.
According to online sources, the heat input from such a wood stove into a new house is much too high because the heat is released very directly and without buffering into the room.
Does anyone have any ideas on how to enjoy a wood stove’s flames in a low-energy house without it becoming overwhelming? 😀
Could a stove installed inside the chimney help?
Best regards from Passau
D
Deliverer26 Feb 2022 10:27Yeah, a little bit for sure.
Numbers: One kilogram (2.2 lbs) of wood provides about one kilowatt-hour of heat energy to your home. This produces 1.8 kilograms (4 lbs) of CO2. (Sounds crazy, but it’s true ;-)
Generating one kilowatt-hour of heat with a heat pump results in 0.14 kilograms (0.3 lbs) of CO2. With genuine green electricity or solar power from your roof, that’s roughly a factor of 10 less.
So, the ratio between wood and heat pump is somewhere between 10:1 and 100:1.
In other words: This “just a bit of cozy warmth on weekends” doubles the CO2 emissions of your heating system.
Numbers: One kilogram (2.2 lbs) of wood provides about one kilowatt-hour of heat energy to your home. This produces 1.8 kilograms (4 lbs) of CO2. (Sounds crazy, but it’s true ;-)
Generating one kilowatt-hour of heat with a heat pump results in 0.14 kilograms (0.3 lbs) of CO2. With genuine green electricity or solar power from your roof, that’s roughly a factor of 10 less.
So, the ratio between wood and heat pump is somewhere between 10:1 and 100:1.
In other words: This “just a bit of cozy warmth on weekends” doubles the CO2 emissions of your heating system.
B
Benutzer20026 Feb 2022 16:43Deliverer schrieb:
With genuine green electricity or solar power from the roof, the factor is reduced by about 10 times again.Now all we need is enough green electricity 😉D
Deliverer26 Feb 2022 17:46Sure. Anyone can join!
(But even without it, it is already at least ten times lower in CO2 emissions, so...)
(But even without it, it is already at least ten times lower in CO2 emissions, so...)
M
motorradsilke26 Feb 2022 18:37Deliverer schrieb:
Yeah. To some extent, definitely.
Numbers: One kilogram (2.2 pounds) of wood provides about one kilowatt-hour of heat energy to your home. This process produces 1.8 kg (4 pounds) of CO2. (Sounds crazy, but that’s how it is ;-)
Generating one kilowatt-hour of heat through a heat pump produces 0.14 kg (0.3 pounds) of CO2. With genuine green electricity or solar power from your rooftop, it’s roughly ten times less.
So, comparing wood to heat pump, the ratio is somewhere between 10:1 and 100:1.
In other words: “Just a bit of cozy heat on the weekend!” doubles the CO2 emissions from your heating system. The only downside is that the tree would release the same amount of CO2 if it simply decomposed unused in the forest.
B
Bertram10026 Feb 2022 19:48motorradsilke schrieb:
if it rots unused in the forest.That doesn’t happen – rotting unused in the forest. There, it is broken down by microorganisms and adds value to the soil and the ecosystem. So your argument is not only incorrect but also completely impossible. I would prefer the wood to decompose rather than be burned. If we’re talking about usefulness, the natural cycle is definitely more beneficial than burning wood just for show or entertainment.Deliverer schrieb:
Yeah. Probably a bit.
Numbers: One kilogram of wood provides about one kilowatt-hour of heat energy to your home. This process produces 1.8 kg of CO2. (sounds crazy, but it's true ;-)
Generating one kilowatt-hour of heat via a heat pump results in 0.14 kg of CO2. With truly green electricity or solar power from the roof, it's about ten times less again.
So, the ratio of wood to heat pump is somewhere between 10:1 and 100:1.
In other words: This "just a little cozy warmth on weekends!" doubles the CO2 emissions of your heating system. One kilogram of wood with a moisture content of 12–15% provides about 4 kilowatt-hours of heat energy to the house with the efficiency of a masonry heater at 85–90%.
I didn’t even turn on the heating in February.
How much of the electricity in winter (December–February) is generated from coal, 40%?
More like 45%, and the overall balance probably isn’t favorable.
Similar topics