Radial temperature difference measuring apparatus

A radial temperature difference measuring apparatus made by applying the cnnstant-hcating-ratc method... 

The individual values of and (A Tcaj)wm of the sawdusts of fifteen wood species tested herein were measured by means of a radial temperature difference measuring apparatus at two temperatures, i.e., a temperature near 100 °C and a temperature near room temperature, respectively. The arithmetic mean of the value of CTc of the sawdust of a wood species calculated by substituting the values of 0 and (A T,-acd im measured each at a temperature near 100 °C into Eq. (85) and that calculated by substituting the values measured each at a temperature near room temperature into the same equation is presented as the value of O c of the sawdust of the wood species in Table 21 in (1) of Subsection 8.4.4, although the two values of O c calculated each by substituting the individual values of 0 and (A Trud) m measured each at the two temperatures into Eq. (85) were nearly equivalent to each other for the sawdust of every wood species. Some values of de thus calculated each for the sawdusts of a few wood species are presented in Table 20. 

Figure 3. Schematic of turbulent combustor geometry and optical data acquisition system for vibrational Raman-scattering temperature measurements using SAS intensity ratios. Also shown are sketches of the expected Raman contours viewed by each of the photomultiplier detectors, the temperature calibration curve, and several expected pdf s of temperature at different flame radial positions. The actual SAS temperature calibration curve was calculated theoretically to within a constant factor. This constant, which accounted for the optical and electronic system sensitivities, was determined experimentally by means of SAS measurements made on a premixed laminar flame of known temperature. Measurements of Ne concentration were made also with this apparatus, based on the integrated Stokes vibrational Q-branch intensities. These signals were related to gas densities by calibration against ambient air signals.

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