ᐅ Integration of Air-to-Water Heat Pump, Photovoltaic System, and Energy Storage
Created on: 29 Dec 2019 23:12
A
Appel2000
Hello everyone,
In our new build, an air-to-water heat pump will be installed as the heating system. The system will be installed by our general contractor (GC) or their heating company.
I would now like to have a photovoltaic (solar) system installed on the roof (not through the GC, but by a specialist company that I select myself), with the unused electricity being stored.
The idea behind this is, among other things, to generate part of the electricity needed for the air-to-water heat pump ourselves.
Since I wanted to inform myself a bit before talking to the heating company and the solar company, I searched online. Unfortunately, it wasn’t really helpful.
What I found out is the order in which photovoltaic electricity is used:
1) Current consumers in the house
2) Battery charging
3) Air-to-water heat pump
4) Feeding into the grid
Is this correct so far?
Then you need the technical prerequisites so that the inverter, battery, and air-to-water heat pump can communicate with each other.
Who provides these prerequisites and who usually configures this? The heating company or the solar installer? Are special devices required for this?
When the air-to-water heat pump needs electricity again, the battery should of course be used first before drawing from the public grid. Does this also work if we have a special heat pump tariff?
I would appreciate it if someone could shed some light on this!
Thanks in advance and best regards
A
In our new build, an air-to-water heat pump will be installed as the heating system. The system will be installed by our general contractor (GC) or their heating company.
I would now like to have a photovoltaic (solar) system installed on the roof (not through the GC, but by a specialist company that I select myself), with the unused electricity being stored.
The idea behind this is, among other things, to generate part of the electricity needed for the air-to-water heat pump ourselves.
Since I wanted to inform myself a bit before talking to the heating company and the solar company, I searched online. Unfortunately, it wasn’t really helpful.
What I found out is the order in which photovoltaic electricity is used:
1) Current consumers in the house
2) Battery charging
3) Air-to-water heat pump
4) Feeding into the grid
Is this correct so far?
Then you need the technical prerequisites so that the inverter, battery, and air-to-water heat pump can communicate with each other.
Who provides these prerequisites and who usually configures this? The heating company or the solar installer? Are special devices required for this?
When the air-to-water heat pump needs electricity again, the battery should of course be used first before drawing from the public grid. Does this also work if we have a special heat pump tariff?
I would appreciate it if someone could shed some light on this!
Thanks in advance and best regards
A
hampshire schrieb:
Nominally 9.99 kWp – 9 W nominal power per photovoltaic tile, 1,110 pieces in total.
How much goes into the battery depends not only on the yield but also on the consumption pattern. Our house has a low base load and several appliances that draw quite a bit of power when in use. As long as they are not operating, a significant amount goes into the battery. It is quite surprising that you manage to fill the battery with 9.99 kWp in this kind of weather. Is your system oriented east/west? That could help in such weather, but still, it would be a lot to fill the battery like that. There are also other consumers in the house to consider.
guckuck2 schrieb:
How large is your photovoltaic system?
I live in the west, and even on sunny December days, the output from the roof didn’t exceed 3 kWh.
But if you come around with a 20 kWp system capacity, then that makes sense again I recorded a yield of 28.9 kWh on December 30. System size is 7.5 kWp south-facing roof.
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boxandroof1 Jan 2020 10:55With a 10kWp system, I could have fully charged a battery 9 times in December. The best day for me was only about 18kWh.
I do not plan to install a battery in the foreseeable future.
I do not plan to install a battery in the foreseeable future.
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boxandroof1 Jan 2020 11:12In December, I exported 115 kWh. In a purely theoretical ideal case without losses, this would mean a maximum saving of 20 € on electricity costs in December thanks to the storage system. November was almost the same.
Your yields sound very good!
I will find out how things are going with the neighbors... I assume my system will be mostly in the shade because of the low sun angle (flat roof with parapet). Otherwise, this large difference is hard to explain. The yield in December was a poor 70 kWh.
I will find out how things are going with the neighbors... I assume my system will be mostly in the shade because of the low sun angle (flat roof with parapet). Otherwise, this large difference is hard to explain. The yield in December was a poor 70 kWh.
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