Patent ID: 8988685
Filing Date: 2015-03-24
Classification: F24S,G01J,G01N,Y02E

Abstract:
1. A portable spectrophotometer for characterizing solar collector tubes formed by an inner tube and an outer tube, comprising: a reflection module for measuring the reflection coefficient of the inner tube; a transmission module for measuring the transmission coefficient of the outer tube; an electronic data acquisition and processing system; an external computer for controlling the spectrophotometer and sending the measured data; wherein each of the transmission and reflection modules comprises at least one light emitting diode as an optical source for each wavelength to be measured from solar spectrum and at least one photodetector sensitive to the wavelength for obtaining a transmission signal for the outer tube and a reflection signal for the inner tube and at least one reference photodetector placed after the at least one light emitting diode by which a reference signal of the at least one light emitting diode is obtained for transmission or for reflection.