A review of available methods for surface shape measurement of solar concentrator in solar thermal power applications

The surface shape and optical quality of the solar concentrators have a great influence on the solar power plant efficiency, and there need an accurate, inexpensive and fast tool to do this measurement work at the plant start up and during operation. The development of the measurement methods of the solar concentrators over the past several decades was reviewed, and three types of the measurement methods: video scanning Hartmann optical test (VSHOT), photogrammetry and deflectometry were introduced in detail. A comparison of the different methods was made, and an outlook is also put forth.

[1]  S. A. Jones.  VSHOT Measurements of Distal II Dish Concentrators , 1998 .

[2]  Mark R. Shortis,et al.  Photogrammetry: An Available Surface Characterization Tool for Solar Concentrators, Part I: Measurements of Surfaces , 1996 .

[3]  Steffen Ulmer,et al.  Automated High Resolution Measurement of Heliostat Slope Errors , 2011 .

[4]  David Mills,et al.  Solar Thermal Power as the Plausible Basis of Grid Supply , 2008 .

[5]  Markus C. Knauer,et al.  Phase measuring deflectometry: a new approach to measure specular free-form surfaces , 2004, SPIE Photonics Europe.

[6]  Steffen Ulmer,et al.  Slope Measurements of Parabolic Dish Concentrators Using Color-Coded Targets , 2008 .

[7]  Gregory Burgess,et al.  Measurement of Mirror Panels Using Coloured Pattern Deflectometry , 2010 .

[8]  R. M. Houser,et al.  VSHOT measurement uncertainty and experimental sensitivity study , 1997, IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203).

[9]  Eckhard Lüpfert,et al.  Photogrammetry: A Powerful Tool for Geometric Analysis of Solar Concentrators and Their Components , 2005 .

[10]  Franco Francini,et al.  Mirror shape detection by reflection grating moire method with optical design validation , 2005, SPIE Optical Metrology.

[11]  A. Valverde,et al.  A novel procedure for the optical characterization of solar concentrators , 2003 .

[12]  L. Schnatbaum,et al.  Solar thermal power plants , 2009 .

[13]  Eckhard Lüpfert,et al.  Slope Error Measurements of Parabolic Troughs Using the Reflected Image of the Absorber Tube , 2009 .

[14]  R. M. Houser,et al.  VSHOT: a tool for characterizing large, imprecise reflectors , 1996 .

[15]  Kirill Trapeznikov,et al.  Rapid Reflective Facet Characterization Using Fringe Reflection Techniques , 2009 .

[16]  Thorsten Bothe,et al.  Fringe Reflection for high resolution topometry and surface description on variable lateral scales , 2006 .

[17]  Robert Pitz-Paal,et al.  A New Fast Ray Tracing Tool for High-Precision Simulation of Heliostat Fields , 2009 .

[18]  Steffen Ulmer,et al.  Fast Determination of Heliostat Shape and Orientation by Edge Detection and Photogrammetry , 2008 .

[19]  Mark R. Shortis,et al.  Photogrammetry for dish concentrator construction , 2009 .

[20]  Fernando Puente León,et al.  Deflectometric Measurement of Specular Surfaces , 2005, 2005 IEEE Instrumentationand Measurement Technology Conference Proceedings.

[21]  T P Caudell,et al.  Surface profile measurement and angular deflection monitoring using a scanning laser beam: a noncontact method. , 1978, Applied optics.