ᐅ New Single-Family Home Construction – Gas or Air Source Heat Pump + Photovoltaic System + Energy Storage?
Created on: 25 Apr 2021 14:18
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nullhorn
Hello everyone,
I will be building a house in 2021/2022 and will live in it myself. It’s a 10x10 meter (33x33 feet), 1.5-story standard single-family house. The roof is a pitched roof with a 40-degree pitch, ridge direction North/South (so the roof faces East/West and can be equipped with photovoltaic panels).
Now, my question: Gas is available in the area. Which heating technology would you recommend?
Gas? Air-source heat pump + photovoltaic + battery storage? Ground-source heat pump? Or something completely different?
And who can give me advice like this without any hidden profit motives (like heating installers always pushing gas, etc.)?
Regards,
Flo
I will be building a house in 2021/2022 and will live in it myself. It’s a 10x10 meter (33x33 feet), 1.5-story standard single-family house. The roof is a pitched roof with a 40-degree pitch, ridge direction North/South (so the roof faces East/West and can be equipped with photovoltaic panels).
Now, my question: Gas is available in the area. Which heating technology would you recommend?
Gas? Air-source heat pump + photovoltaic + battery storage? Ground-source heat pump? Or something completely different?
And who can give me advice like this without any hidden profit motives (like heating installers always pushing gas, etc.)?
Regards,
Flo
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Deliverer5 Sep 2021 16:06Yes, but this is about new construction, not gas boilers that are 20 years old. Soon, electricity will no longer be generated from brown coal. So this argument is no longer valid, or am I missing something?
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RotorMotor5 Sep 2021 16:19nordanney schrieb:
I am also an advocate of heat pumps, but gas heating should be preferred over heat pumps if the electricity for the heat pump is, for example, generated from lignite coal. That might be roughly true with pure lignite coal generation, but it is quite far from the German electricity mix.
Here are some figures, starting with electricity:
Lignite coal: 1093 grams CO2/kWh electricity, Germany mix 2020: 366 g/kWh
Even if gas were converted directly into electricity, it would only reach around 400 g/kWh
[B]It is foreseeable that this will improve, not worsen.
And here is heat (assuming a COP of 4):
Using this electricity with a heat pump results in about 250 g/kWh heat with lignite coal and 90 g/kWh with the current mix.
Direct combustion of gas produces 200 g/kWh. So at least twice as much.
It gets really interesting when combined with renewable electricity, but it is fascinating to see that in terms of CO2 balance, it can even make sense to convert gas into electricity and then use it in a heat pump rather than burning it directly.
[/B]
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Deliverer5 Sep 2021 16:21hanse987 schrieb:
Who is Rezo, actually? A scientist? No, he is a YouTuber/Twitch streamer and, in this case, an editor. You can easily find him on YouTube.
(In the unlikely event that you doubt his credibility: he provides sources if you don’t believe him. Unlike others.)
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pagoni20205 Sep 2021 16:32Deliverer schrieb:
There is social behavior and the opposite of it. Anyone who wants to live in a pleasant community should follow the consensus. That was the original trigger for my comment.
Your position as expressed here:
Consensus = heat pump (in this case)
No heat pump = opposite of social, therefore antisocial
What bothers me is the tone of the discussion as well as the claim that one holds the "only correct" and universally valid approach.
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Deliverer5 Sep 2021 16:36Sometimes you need to be a bit provocative to get people thinking. ;-)
I did not intend to offend anyone personally. If I did, I apologize.
And yes – heat pumps are the only truly viable option for heating homes in the future (unless you are building a passive house). The alternatives are only options that are not climate-neutral or “worse” (direct electric heating).
I did not intend to offend anyone personally. If I did, I apologize.
And yes – heat pumps are the only truly viable option for heating homes in the future (unless you are building a passive house). The alternatives are only options that are not climate-neutral or “worse” (direct electric heating).
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