| Integration of PV cells
into buildings
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One of the disadvantage of using PV cells is the relatively big demand of installation area. The integration of PV cells into windows is one solution to reduce the loss of the useable areas. In the underground house (SKIBSTEDFJORD, Nordisk centrum for debat og udvikling ) you can find two different PV arrays. These are the first glass integrated PV cells which were produced in Denmark (April, 1998). One is made from monocrystalline PV cells and the other is made from polycrystalline PV cells. The maximum power output is approximately 1.2 kW each. The DC electricity produced by the arrays is converted to AC and it is fed into the grid of the house. If these cells don’t provide the lamps, television, refrigerator with enough energy, the energy demand is covered from the grid. In this case the grid functions as a huge battery, so there is no need for expensive lead-acid or other type of batteries. This point is important because the grid compensate the difference between the current energy production and the current energy consumption. |
| Technical details The
integrated PV cells installation contains two PV arrays ,
two DC/AC inverters (SWR700, Sunny Boy system, made in
Germany.) In the Underground house you can find a
computer which is installed to the system to make
measurements to test or to check the process. Last,
another interesting technical detail : The electric meter
can work two reverse direction in the mean time.
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