ᐅ Bricks: Are differences in thermal conductivity of 0.03 noticeable?
Created on: 20 Nov 2024 07:26
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IOSam23
I want to build a two-story single-family house with an air-to-water heat pump using filled 36.5 Poroton bricks. Since there is no longer any KfW 55 funding, I am generally wondering whether it is economically and energetically worthwhile to use bricks with a thermal conductivity of 0.07 W/mK or if that advantage only looks good on paper. Is the difference between 0.07 and 0.10 W/mK in the house really noticeable or is it more negligible? Will I have to heat significantly more if I choose the 0.10 value?
IOSam23 schrieb:
If I add a storage system, I wonder if the higher heating costs could be reduced or even eliminated by the photovoltaic system? Building on my previous post, I would even consider leaving out the photovoltaic system (but still prepare what’s necessary) to invest instead in significantly better insulation for the entire house. With a truly effective photovoltaic system, you often generate electricity that you wouldn’t even use if your insulation was better.
I have a 10 kWh battery, which is nice and fun, but it’s definitely not a game changer.
IOSam23 schrieb:
Since money is already a big deal for me, I want to implement financial and tangible, that is truly noticeable, measures as effectively as possible. Instead of thinking this only applies to me, one should remember the song by the good old Roy Black: "You are not alone."
The long-term advisable use of building measures relative to the available budget applies to probably 99% of all homeowners.
Maybe you’ll share your project here sometime, and the community might spot saving potentials you hadn’t considered before.
Arauki11 schrieb:
Maybe you could share your project here, and the community might spot potential savings you hadn’t considered before. You only need to read the maiden threads of other newcomers to realize how many fellow aspiring homeowners get distracted by small issues at the beginning or try to solve the planning like math problems (first factoring out the known variables and then looking for ways to simplify). But house planning actually works differently.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
IOSam23 schrieb:
Since an air-to-water heat pump is planned, the heating costs are included in the electricity bill. If I also have a storage tank, I wonder if the higher heating costs could be reduced or even eliminated by the photovoltaic system? We have a house, heat pump, storage tank, sauna, and an average electricity consumption for two people.
Since we knew this beforehand, the photovoltaic system and storage were designed based on these conditions.
According to calculations, including renewable energy surcharge and saved electricity, we still have a monthly cost of €8 as an average over the year.
Plan your house carefully.
Energy systems can then be designed accordingly.
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