ᐅ Modernist Concrete Villa with Cavity Wall Insulation – Experiences
Created on: 11 Sep 2018 07:32
R
rick2018
Hello everyone,
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
Climbee schrieb:
When the sauna is heating up and I slip a roast into the stove pipe at the same timesorry ... but I have to laugh out loud
@Climbee We have a 9.8 kWh battery storage from LG.
We purchased a complete package, so the individual price cannot be specified exactly.
Depending on the inverter, not every battery is compatible.
Through this deal, we also got a higher quality inverter.
If I had to estimate, I would guess the battery storage cost around €6,000.
We purchased a complete package, so the individual price cannot be specified exactly.
Depending on the inverter, not every battery is compatible.
Through this deal, we also got a higher quality inverter.
If I had to estimate, I would guess the battery storage cost around €6,000.
R
research868 Apr 2020 09:19Even though I find the way you are implementing this really beautiful project and that you have done your research incredibly impressive, you are unfortunately mistaken or have been misadvised regarding your photovoltaic system...
You have a roof that could accommodate at least 15-20 kWp with sufficient side clearance. Your modules are probably mounted on frames facing east/west. This usually helps to achieve a high self-consumption throughout the day (even without storage). With your system, you will never reach significantly more than 70% of your modules’ peak capacity. In fact, a strict 70% cap could even be considered here.
If you want storage, all modules should face south for maximum yield. Otherwise, without storage, east/west and the often-cited “roof fully utilized” approach is best.
Even if it probably doesn’t bother you too much if the photovoltaic system is not ideally matched or profitable, more could have been gained here.
rick2018 schrieb:
No, there will be no additional modules. The system has a capacity of 9.920 kWp.
Even though it’s not economically profitable, we have a system with a battery storage. The offer was very good...
Once you exceed 10 kWp, it only makes sense if you significantly surpass that. Since setbacks to the parapet and so on must be observed, we could not add many more modules than the current ones.
We will operate the system with dynamic active power limitation. Since we always have a high base load, the system can run at 100%. This way, there is at least no strict 70% cap because self-consumption is taken into account.
We could definitely use more photovoltaic power.
Our other roof sections are too small, partly shaded, greened, used otherwise, etc.
You have a roof that could accommodate at least 15-20 kWp with sufficient side clearance. Your modules are probably mounted on frames facing east/west. This usually helps to achieve a high self-consumption throughout the day (even without storage). With your system, you will never reach significantly more than 70% of your modules’ peak capacity. In fact, a strict 70% cap could even be considered here.
If you want storage, all modules should face south for maximum yield. Otherwise, without storage, east/west and the often-cited “roof fully utilized” approach is best.
Even if it probably doesn’t bother you too much if the photovoltaic system is not ideally matched or profitable, more could have been gained here.
The storage is just a gimmick. I understand that. How much we can load it will remain to be seen.
Taking the spacing into account, a maximum of 15 kW could have fit. We didn’t want the additional effort regarding the investment and taxation.
But thanks for the valuable input.
Taking the spacing into account, a maximum of 15 kW could have fit. We didn’t want the additional effort regarding the investment and taxation.
But thanks for the valuable input.
research86 schrieb:
Even though I find the way you are implementing this beautifully designed project and your thorough research incredibly impressive, unfortunately, you’ve missed the mark or have been misadvised regarding your photovoltaic system...
You have a roof that can easily fit at least 15-20 kWp with plenty of side clearance. Your panels are likely mounted on racks facing east/west. This setup usually helps achieve a high self-consumption rate (even without a battery) throughout the day. With your system, you will never significantly exceed 70% of your modules’ peak capacity. In fact, reaching over 70% would be quite optimistic.
If you want a battery, then all panels should ideally face south for maximum yield. Otherwise, without a battery, east/west orientation and the often-cited “full roof” approach is best.
Even if it might not bother you much if the photovoltaic system isn’t optimized or profitable, you could have gotten more out of it here. Honestly... if I had the money, I wouldn’t care at all.
Rick is very down-to-earth, a good guy... I like it!
R
research868 Apr 2020 09:57Exactly for this reason my response, because with his vast acquired knowledge he has helped not only me (indirectly) but also others.
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