However, the conversion factor of an absorber construction with elastomer tube will be around 3 % smaller. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
For the first test collector with an improved elastomer tube and a selective absorber coating the conversion factor increased to 0.76. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
The second improved test collector was produced with a type B absorber construction (roll bended absorber sheets) and an improved elastomer tube with a larger diameter. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)