Burners regenerative radiant tube

At a continuous roller hearth type annealing furnace 24 pairs of regenerative radiant tube burners were applied to the heating and soaking zone shown in Figure 24.22. The material to be heat treated is cast iron joints and design net capacity of the furnace is... 

Schematic drawing of a continuous roller hearth type annealing furnace equipped with 24 pairs of regenerative radiant tube burner. (Sudo, ]., and Mochida, S., Internal paper on Radiant Tube Burner Testing, Yokohama, Japan Nippon Furnace Co., Ltd., 2009. With permission.)...

Fig. 5.29. Sixty-four pairs of regenerative radiant tube burners annealing steel strip in a galvanizing line.

Figure 5.29 shows the boxes containing the regenerative beds on both ends of radiant U-tubes. Evidence of the lower final exhaust temperature with regenerative burners was shown by the fact that it was no longer necessary to pay double time to persons working around the regenerative radiant tubes because of lower ambient temperature. 

A schematic diagram of radiant tube-type regenerative burner. 

Comparative Performance Data Between Regenerative and Recuperative Radiant Tube Burners.494... 

For single-ended, P-shaped, and double P-shaped radiant tubes recuperative burners can be used. Figure 24.5 shows the application of a recuperative burner in a SER tube. There are also regenerative burners on... 

W-type radiant tube with regenerative burners. 

Application of a regenerative burner in a double P-shaped radiant tube. 

Within this chapter, measurements at a radiant tube with recuperative and regenerative burner technologies will be shown as an example of how measurements should be carried out. The measurements have been accomplished at the lab-scale furnace of KTH, Stockholm [6-8], which has been shown (Figure 24.7). A W-shape radiant tube, shown in Figure 24.9, was used in the experiments. The outer diameter of the tube was... 

Radiant tubes are used in industry for heat treatment application in which products are treated under a protective gas atmosphere within the heat treatment furnaces. There are different radiant tubes with different geometries, burners, air preheating technologies, and materials on the market. In order to increase the efficiency of radiant tubes, plug in recuperators, and recuperative or regenerative burners will be used at radiant tubes to... 

Wiinning, J. G. "Self Regenerative Burner for Single-Ended, P and Double-P Radiant Tubes." Industrial Heating, June 2007. 

Fig. 3.16. A heat treating car-hearth (batch) furnace. Both sides of the furnace are heated by four W-radiant-tubes wifh a tofal of eight pairs of regenerative burners. Plug fans through the roof drive recirculation down between the load pieces.

Iron-carbon-chromium-nickel alloy steels are used extensively in furnace applications such as heat treat containers, hearth components, drive chains, carburizing boxes, recuperators, regenerative burners, burner parts, and radiant tubes. The metal selection must consider the fact that the expansion rate of austenitic stainless steels is nearly twice that of ordinary steel. (See fig. 9.14.)... 

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