KTB Nr. 2006-35-kj-en Collector test according to EN 12975-1,2:2006
KTB Nr. 2006-35-kj-en Collector test according to EN 12975-1,2:2006
KTB Nr. 2006-35-kj-en Collector test according to EN 12975-1,2:2006
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E.3 Effici<strong>en</strong>cy curve for the determined coeffici<strong>en</strong>ts and for an assumed irradiation<br />
of 800 W/m 2 based on aperture area<br />
1<br />
0.9<br />
Effici<strong>en</strong>cy η (based on aperture area)<br />
0.8<br />
0.7<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0.1<br />
0<br />
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1<br />
Δt/G [K*m 2 /W]<br />
Figure 11: Effici<strong>en</strong>cy curve scaled <strong>to</strong> 800 W/m 2 based on aperture area 1.924 m 2<br />
The calculated parameters are based on following areas:<br />
aperture area:<br />
absorber area:<br />
η 0.05a = 0.553 η 0.05A = 0.578<br />
η 0.05 is the effici<strong>en</strong>cy of the collec<strong>to</strong>r for typical conditions of solar domestic<br />
hot water systems:<br />
irradiation of 800 W/m 2 ,<br />
ambi<strong>en</strong>t temperature of 20 ◦ C<br />
mean collec<strong>to</strong>r temperture of 60 ◦ C.<br />
<strong>KTB</strong> <strong>Nr</strong>. <strong>2006</strong>-<strong>35</strong>-k-j-<strong>en</strong> : <strong>Collec<strong>to</strong>r</strong> <strong>test</strong> <strong>according</strong> <strong>to</strong> <strong>EN</strong> <strong>12975</strong>-1,2:<strong>2006</strong><br />
IMMERGAS S.p.A. , Series Collet<strong>to</strong>re Solare Piano CP4M and Collet<strong>to</strong>re Solare Piano CP2M<br />
04.07.2007, Fraunhofer-ISE, Heid<strong>en</strong>hofstraße 2, D-79110 Freiburg<br />
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