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Visitors centre De Kleine Aarde Boxtel (NL)
"The Photovoltaic (PV) system"

The Solar Roof with PV-system under construction

The photovoltaic system produce a DC current. This current is transformed to a 220volt AC by 3 inverters. The system is grid connected. The produced electricity is used in the building, the surplus is delivered into the grid. Prices for buying and selling are equal.

• The installed power is 7,8 kWp.
• The PV system produces 60% of the building related electricity consumption of the visitor's centre.

The inverters in the plant room

The solar cells are integrated in the glass roof of the corridor. This gives several advantages.

• The cells absorb aprox. 70% of the sunlight.
• This gives a reduction of the heat load and a lower internal summer temperature.
• The lower heat load in combination with natural ventilation (chimney or stack effect) keeps the corridor rather cool in summer.
• The offices on the ground floor keep cool in summer.

Reduced light in the corridor and a detail of the ventilation windows

More detailed information:
Glass roof integrated photovoltaic system De Kleine Aarde Boxtel (NL) Thermie SE 104/93 NL - ir. T.H. Reijenga, drs. W.O.J. Böttger, Paper on the 14th European Photovoltaic Solar Energy Conference, Barcelona 1997.

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