JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Concentration Error Assessment by Comparison of Solar Flux Measurement and Modeling
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Concentration Error Assessment by Comparison of Solar Flux Measurement and Modeling
Chai, Kwan-Kyo; Yoon, Hwan-Ki; Lee, Hyun-Jin; Lee, Seong-Uk; Kim, Si-Seok;
  PDF(new window)
 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.
 Keywords
Solar concentration;Error;Reflector surface slope;Flux mapping method;Ray tracing method;
 Language
Korean
 Cited by
 References
1.
Romero-Alvarez, M., Zarza, E., Concentrating Solar Thermal Power in Handbook of Energy Efficiency and Renewable Energy , Taylor & Francis, New York, 2007.

2.
Lee, H. J.. Chen, Y. B., Zhang, Z. M., Directional Radiative Properties of Anisotropic Rough Silicon and Gold Surfaces, International Journal of Heat and Mass Transfer, Vol. 49, No. 23-24, pp. 4482-4495, 2006. crossref(new window)

3.
Petit, R. B. Characterization of the Reflected Beam Profiles of Solar Mirror Materials. Solar Energy, Vol. 19, 733-741, 1977. crossref(new window)

4.
Johnston, G., On the Analysis of Surface Error Distributions on Concentrated Solar Collectors, J. Sol. Energ. T. ASME, Vol. 117, pp. 294-296, 1995. crossref(new window)

5.
Lee, H. J., Kim, J. K., Lee, S. N., Kang, Y. H., Heat-Flux Analysis of Solar Furnace Using the Monte Carlo Ray-Tracing Method, Trans. KSMEB, Vol. 35, No. 10, pp. 989-996, 2011. crossref(new window)

6.
Ulmer, S., Reinalter, W., Heller, P., Lupfert, E., Martínez, D., Beam Characterization and Improvement with a Flux Mapping System for Dish Concentrators, J. Sol. Energ. T. ASME, Vol. 124, No. 2, pp. 182-188, 2002. crossref(new window)

7.
Chai, K. K., Lee, H. J., Kim, J. K., Yoon, H. K., Lee, S. N., Kang, H. Y., Seo, T. B., Characteristics of the Radiation Heat Flux Distribution for the KIER Solar Furnace, The Korean Solar Society Conference, Vol. 31, No. 2, pp. 74-79, 2011.

8.
Lee, H. J., Kim, J. K., Lee, S. N., Yoon, H. K., Yu, C. K., Kang, H. Y., Solar Flux Analysis of the KIER Solar Furnace, Solar PACES Symposium 2012