Measurements of Some Characteristics of Thermal Radiation in a 400-kW Grate-Fired Furnace Combusting Biomass |
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Authors: | Henrik Hofgren Bengt Sundén Lei Wang Thomas Norman Matthias Mandø |
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Affiliation: | 1. Department of Energy Sciences, Lund University, Lund, Swedenhenrik.hofgren@gmail.com;3. Department of Energy Sciences, Lund University, Lund, Sweden;4. Babcock &5. Wilcox V?lund A/S, Esbjerg, Denmark;6. Department of Energy Technology, Aalborg University, Esbjerg, Denmark |
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Abstract: | A comprehensive experimental investigation relevant to thermal radiation has been performed in a grate-fired test furnace. Thermal radiation is the dominating mode of heat transfer in the grate-fired furnace and yet only a few studies have focused on thermal radiation. No previous works, to the authors' knowledge, have been carried out concerning measurements on radiative heat transfer in grate-fired furnaces. In this work measurements of temperature have been carried out for all boundaries and the flue gases at a large number of locations. The gas species volume fraction, particle mass–size distributions, and wall irradiation have also been measured at a number of spatial locations. These data are useful in a computational framework to describe the radiative heat transfer reaching the boundaries. Comparing modeled wall irradiation to the measured one makes it possible to obtain a deeper insight into the thermal radiative transport inside the grate-fired furnace. |
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