Apartment building in Upper Austria
ELWA with ELWA Modbus Interface Monitoring by my-PV.LIVE Cloud Connect
Faits sur le projet
- Owner
- Planner
- Construction type
- Construction year
- PV power and orientation
- Hot water storage
- Operation
- my-PV product in use
- System control
![Wohnbauprojekt Linz GWG](https://a.storyblok.com/f/225509/405x304/5723165664/referenz_gwg_wohnbauprojekt_in_linz_fakten.webp/m/552x414/filters:focal())
Description
The ELWA from my-PV ensures optimal energy management in multi-family houses as well as in single-family houses. Use of the ELWA has reduced the centralised building technology in the project to a minimum. Hot water provision is entirely decentralized in the individual apartments. An electrical hot water provision device (ELWA) was installed in the existing hot water tanks. The individual photovoltaic systems on the roof provide the ELWAs with clean solar power.
Thanks to this technological innovation, the residential property does not need any heat distributed by pipework to heat hot water.
Beside the space heating system, there is only one pipe per apartment for supplying cold water. Use of the ELWA completely avoids the high energy losses caused by heat ring mains. The solar energy is converted into heat at the exact point where it is required.
Functional description of the ELWA
During the daytime, direct current is transported by electric cable from the PV modules to the ELWA, which uses it to heat the hot water in the tank. On days with low solar radiation, the system switches automatically to use standard household electricity as required. The ELWA thus always guarantees the provision of hot water.
Beside the space heating system, there is only one pipe per apartment for supplying cold water. Use of the ELWA completely avoids the high energy losses caused by heat ring mains. The solar energy is converted into heat at the exact point where it is required.
This form of energy management does not require an inverter because the electricity is not fed into the grid. This dispenses with the need for any connection permits, and the installation or retrofitting is extremely simple. Thanks to the integrated MPP tracker, the ELWA can also be used for projects in which the PV systems are installed in various alignments on the building. Using the ELWA makes the usually complex grid connection of PV systems in large residential buildings unnecessary. This form of storage makes solar electricity an efficient solution. Even for this type of building.
The technical advantages are manifold. "Cable instead of pipes" makes installation and operation considerably easier and even high target temperatures can be achieved without drastically increasing losses.
my-PV.LIVE Connect
Cloud Connect enables the simple connection of all myPV devices to a data cloud in residential construction. In this way, they have an overview of the current operating parameters at anytime and anywhere. In addition, my-PV offers the option of continuous remote monitoring.
Even in the first week of the year, photovoltaic heat provides the considerable solar contribution of 30 percent of the hot water production, even though the solar radiation is still relatively low. This is made possible by avoiding heat loss from pipes. In addition, photovoltaic systems work even better at low outside temperatures.
Technological innovation
The use of PV electricity for hot water production is a young topic, but it has been developing at an ever faster rate in recent years. With my-PV technology, the power of electric heating systems can be controlled linearly. A feature that is essential for photovoltaic heating applications. The technical advantages are manifold. "Cables instead of pipes" simplify installation, the systems are maintenance-free. Compared to solar thermal systems, 90% less copper is required. All pipes, pumps, valves, expansion tanks, antifreeze etc. are obsolete and PV works even more efficiently at low ambient temperatures.
Photovoltaics is becoming the cheapest form of energy worldwide. Solar electric water heating with ELWA is more advantageous than solar thermal energy.
Weitere Referenzen
![](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...