집광 열유속 측정과 모델링의 비교를 통한 집광 오차 평가
Concentration Error Assessment by Comparison of Solar Flux Measurement and Modeling
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초록
Concentration errors critically affect the performance of solar concentrator, so their evaluation is important to the concentrated solar power technology. However, the evaluation is very challenging because error sources are various and not easy to measure individually. Therefore, the integrated effect of concentration errors is often more interesting and useful for large-scale applications. In the present work, we analytically investigate and classify various concentration error sources and then explain that the effect of various concentration errors can be represented in terms of a root mean square value of reflector surface slope error. We present an indirect approach to assessing the reflector surface slope error by comparing solar flux measurement data with modeling calculations. We apply the approach for solar furnaces with different thermal capacity and investigate its advantages and disadvantages.
Abstract
Concentration errors critically affect the performance of solar concentrator, so their evaluation is important to the concentrated solar power technology. However, the evaluation is very challenging because error sources are various and not easy to measure individually. Therefore, the integrated effect of concentration errors is often more interesting and useful for large-scale applications. In the present work, we analytically investigate and classify various concentration error sources and then explain that the effect of various concentration errors can be represented in terms of a root mean square value of reflector surface slope error. We present an indirect approach to assessing the reflector surface slope error by comparing solar flux measurement data with modeling calculations. We apply the approach for solar furnaces with different thermal capacity and investigate its advantages and disadvantages.
참고문헌 (8)
- Romero-Alvarez, M., "Concentrating Solar Thermal Power in Handbook of Energy Efficiency and Renewable Energy" (2007), Taylor & Francis
- Lee, H.J., "Directional Radiative Properties of Anisotropic Rough Silicon and Gold Surfaces", International Journal of Heat and Mass Transfer, 49(23-24), pp.4482~4495 (2006)
- Petit, R.B., "Characterization of the Reflected Beam Profiles of Solar Mirror Materials", Solar Energy, 19, pp.733~741 (1977)
- Johnston, G., "On the Analysis of Surface Error Distributions on Concentrated Solar Collectors", J. Sol. Energ. T. ASME, 117, pp.294~296 (1995)
- 이현진, "몬테카를로 광선추적법을 이용한 태양로의 열유속 해석", 대한기계학회논문집 B, 35(10), pp.989~996 (2011), 대한기계학회
- Ulmer, S., "Beam Characterization and Improvement with a Flux Mapping System for Dish Concentrators", J. Sol. Energ. T. ASME, 124(2), pp.182~188 (2002)
- Chai, K. K., "Characteristics of the Radiation Heat Flux Distribution for the KIER Solar Furnace", The Korean Solar Society Conference, 31(2), pp.74~79 (2011)
- Lee, H.J., "Solar Flux Analysis of the KIER Solar Furnace", Solar PACES Symposium (2012)