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The air return ratio is a key factor for the overall efficiency of the open volumetric receiver concept. Although first measurements of the air return ratio exist for smaller setups of the open volumetric receiver concept, so far no measurement of the air return ratio has been presented for the Solar Thermal Test and Demonstration Power Plant Jülich (≈1.5MW, ≈10(kg air)/s; ≈700°C). This paper describes...
Qualitative measurements of leaks in air flows are frequently conducted in engineering. However, an environmentally friendly leak rate measurement technique which yields quantitative results and is applicable to hot, large-scale circular air flows (≈10kg/s; ≈ 700°C) with high leak rates has not been presented yet. This paper describes the development, test and validation of a stationary and a dynamic,...
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