MODULE II
Solar energy technology Page 42

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Diagram 51 helps the service technicians with the right dimensioning of a complete solar energy system with certain predetermined or fixed variables. So e.g., the diagram below is based on the following assumptions: A warm water temperature of 45°C, a total length of the pipes of 10 metres - 80% installed inside and 20% installed outside - with a soft foam insulation of 30 mm. An example was drawn in with a red line in the diagram. For this example the diagram gives the following information: One needs 3 collectors and a storage system volume of 300 litres for a household with 4 members which has a warm water consumption of 40 litres per person and day and which is situated in the solar climate zone II. The inclination angle of the roof is 45° directed to the south and the solar coverage rate is 55%.

Diagram 51: Dimensioning of a complete solar energy installation with certain predetermined or fixed variables





English translation of technical terms and sentences in diagram 51:


Zur überschlägigen Auslegung
= For estimating the size or dimension of a system
Solar-Klimazone = Solar climatic zone
Sonnenscheindauer in h/Jahr = Sunshine duration in hours per year
Globalstrahlung in kWh/m2 Jahr = Global radiation in kWh per m2 per year
Kollektoranzahl = Number of collectors
O/W = East/West
SO/SW = Southeast/Southwest
S = South
Solarer Deckungsanteil in % = Solar coverage rate in %
Dach-Ausrichtung = Roof orientation
Solar-Klimazone = Solar climatic zone
Dach-Neigung = Roof inclination angle
Warmwasser-Verbrauch = Warmwater consumption
(Liter pro Person/Tag) = (Litres per person per day)
Anzahl der Personen = Number of people
Beispiel = Example
Ausgangsdaten = Assumed basic data
Warmwasser-Temperatur 45°C, 10m einfache Leitungslänge, 80% innen, 20% außen, mit
30 mm Weichschaumdämmung
= Warm water temperature of 45° C, a total length of the pipes of 10 metres, 80% installed inside and 20% installed outside, soft foam insulation of 30 mm

 

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