Abstract
Abstract This report compares temperatures measured with the suction pyrometer and coherent anti-Stokes Raman spectroscopy (CARS) techniques in turbulent, swirling, coal and No. 2 oil flames. The flames were generated in a horizontally fired, cylindrical (1.0 m dia. by 5.0 m long), axi-symmetric, tunnel furnace (firing rate l,000M.J/h). A broadband USED-CARS system was employed to make several, one thousand shot acquisitions in the furnace before and after the suction pyrometer measurements. These experiments indicate that the CARS technique can successfully be applied to practical flames to make temperature measurements. It is demonstrated that these measurements are more meaningful and more reliable than temperatures measured using a suction pyrometer.
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