Major project with 12 AC•THOR
District heating from PV
In an apartment building in Vienna, 12 AC•THOR control 12 my-PV Immersion heaters.
Faits sur le projet
- Operator
- Location
- PV power
- Type of building
- Heat storage size
- my-PV product in use
- Operation mode
- System control by:
![PV am Dach my-PV](https://a.storyblok.com/f/225509/709x500/b1b959a0cb/pv-am-dach_drohne_silder.jpg/m/552x389/filters:focal())
In a residential complex in Vienna, the energy from a 47 kWp photovoltaic system is used to support the district heating network. Due to the limitation of the feed-in power by the grid operator, the solar power generated is converted into heat in an 800 litre buffer storage tank before the PV power is shut off.
Heat pumps were out of the question due to the high temperature in the heating network. In addition, their drive power cannot be regulated, which is a basic prerequisite for combination with photovoltaics. Only heating elements in combination with the power controllers from my-PV meet these requirements. With the AC•THOR, their output can be regulated linearly. A property that is essential for PV heat applications.
This not only generates clean thermal energy, but also mitigates one of the biggest problems of decentralized power generation: the public power grid is under increasing pressure to regulate the many small energy suppliers and maintain the voltage. By reducing solar electrical surpluses, the power grids are relieved and the electricity generated is used efficiently on the spot.
Bon à savoir
Photovoltaics are now so inexpensive that even the solar district heating support has become solar electric.
How it works
The superordinate energy management records the energy at the inverter and reports it to the AC•THORs. These then ensure the precisely regulated output of the heating elements. The implemented control system also helps to precisely maintain the desired flow temperature in the district heating network.
There has not been anything comparable yet
The use of PV electricity for water heating in residential buildings is a young issue in itself, but supporting a district heating network is something completely new. This project opens another application for heat with photovoltaics. In recent years, technology has almost replaced classic solar thermal energy in residential buildings, but this has not yet been the case for large-scale systems (industrial process heat, district heating). However, due to the continuing decline in module prices, such projects can now also be realised with PV.
Bon à savoir
Due to the fluctuating generation of solar power, exact power control of electrical heat generators is a basic requirement for combination with photovoltaics.
Advantages compared to solar thermal systems
The technical advantages are manifold. "Cables instead of pipes" facilitate installation and operation considerably and even high target temperatures can easily be achieved without drastically increasing losses. Compared to solar thermal systems, 90% less copper is required. Pipes, pumps, valves, expansion vessels, antifreeze etc. are no longer required, which greatly simplifies solar thermal technology.
Bon à savoir
With the further expansion of photovoltaics in the cities, the use of PV surpluses will from now on also include the possibility of feeding into district heating networks.
![AC-THOR Seitenansicht](https://a.storyblok.com/f/225509/3840x2160/1725134841/ac-thor_2.png/m/1920x0/filters:focal())
AC•THOR
in use
Simple & efficient: AC•THOR controls electrical heat sources depending on the availability of PV energy and heat demand. And that for both hot water, as well as for space heating.
More infos about AC•THORWeitere Referenzprojekte
![](https://a.storyblok.com/f/225509/4032x3024/e620f0bcaf/haus_gesamt_oben.jpg/m/420x0/filters:focal())
Poêle de masse et chaleur photovoltaïque au lieu de pompe à chaleur
La maison individuelle impressionne par sa construction écologique et sa technologie de chauffage innovante.
lire la suite...![](https://a.storyblok.com/f/225509/1024x768/15869cbbf6/dc_4614.jpg/m/420x0/filters:focal())
,
Le trio d’appareils my-PV atteint 98 % d'autoconsommation PV
Grâce à un AC ELWA 2 et deux AC ELWA-E, un propriétaire en Estonie a atteint un taux d'autoconsommation de 98 %.
lire la suite...![](https://a.storyblok.com/f/225509/4000x2250/308a8994a5/my-pv.jpg/m/420x0/filters:focal())
Une Maison Individuelle avec de Nombreux Partenaires Compatibles
Optimisez votre énergie photovoltaïque grâce à la compatibilité des systèmes : découvrez comment cette maison y est parvenue.
lire la suite...3 modules photovoltaïques pour l'eau chaude
Une installation photovoltaïque de 1,4 kWp produit de l'eau chaude en été avec la ELWA, économisant 1 m³ de gaz par jour.
lire la suite...![](https://a.storyblok.com/f/225509/3484x2742/5b64804339/solaredge-portal.jpg/m/420x0/filters:focal())
Une famille suisse augmente son autoconsommation
Le fabricant suisse de logiciels Solar Manager contrôle l'AC•THOR 9s dans une maison individuelle dans le canton d'Aargau.
lire la suite...![my-PV Referenzprojekt ELWA Harz PV-Module](https://a.storyblok.com/f/225509/1199x905/b94d00245e/bilder_referenz-elwa-harz_zogbaum-2.jpg/m/420x0/filters:focal())
De l'eau chaude grâce au soleil en Allemagne
Le soleil ne facture rien : avec ELWA, il fournit de l'eau chaude gratuitement, même dans la région du Harz en Allemagne.
lire la suite...