Over the course of the year, the 6,3 kW grid-connected PV installation is expected to generate 5700 kWh of electricity, sufficient for the entire household’s electrical needs, including heat pump, lighting, ventilation and even cooking. To achieve this, the building design uses the principles defined by the Passive House Institute in Darmstadt, Germany to conform to the new Swiss‘ Minergie-P ’ building standards. Notably this includes a compact building shell, high levels of insulation, minimal winter shading, windows oriented and sized to maximize winter daytime solar gains and minimize heat losses, and heat recovery on the ventilation system. This holistic design keeps the annual heating load for space and water to just 26,5 kWh/m². 4,5 m² of thermal collectors provide 2000 kWh/a for water heating, topped up by the heat pump in winter.
Overall the heat pump and ventilation system require less than 2 000 kWh/a to maintain comfortable living conditions, allowing the balance of the PV system's output to meet the needs of the other household appliances.
| • | Location: Dintikon, Switzerland |
| • | PV System: 6,3 kW grid-connect |
| • | Annual electricity production: 5700 kWh (balances annual electricity demand) |
| • | Passive building construction minimizes thermal fluctuations Roof/wall insulation: 38-40 cm Windows U-value: 0,74 W/m² K |
| • | Electrical heat pump: 2,2 kWth |
| • | Solar thermal collector: 4,5 m² |
| • | Contact: Werner Setz, Architect, Tel: +41 (0)62 889 22 60 |
