Frontiers in Energy
>> 2007,
Volume 1,
Issue 2
doi:
10.1007/s11708-007-0029-3
Application of digital holography to circle flow bed boiler measurement
1.Clean Energy and Environment Engineering Key Laboratory of MOE, Zhejiang University, Hangzhou 310027, China; 2.UMR 6614CORIA, Technopole du Madrillet, 76801 Saint-Etienne du Rouvray, France
Available online: 2007-06-05
Next
Previous
Abstract
The spatial distribution of particles in the boiler is very important in the study on the circle flow bed boiler (CFB). Digital in-line holography technique was applied to obtain the spatial and diameter distribution of the particles inside the boiler. A HE-NE laser was used to illuminate the particles inside the CFB through two glass windows and the in-line diffraction pattern was recorded by a CCD camera. The diffraction can be interpreted as a convolution between a family of wavelet functions and the object function. So the three-dimensional (3D) images of the particles in the two-phase flow were reconstructed by the convolution between diffraction pattern and wavelet functions. The particle diameters and 3D coordinates were calculated from the reconstructed 3D images by a series of image-processing methods, followed by a discussion of the experimental results.
京公网安备 11010502051620号
