OCR Text |
Show Uniform high radiation The premixed gas is completely burned in the combustion chamber in front of the multi-hole plate. Solid radiation is provided by an alumina-silica ceramic net wi th superior heat resistance and heat shock resistance. As shown in Fig.?, the temperature distribution at the ceramic net surface is comperatively uniform. The uniform high radiation is achieved by converting high- temperature gas radiation to solid radiation. The heating ability of this new burner is twice as much as that of the conventional burner(Fig.8). The specifications of the new luminous wall burner are compared with thouse of the conventional burner in Table 1. E j ; l I~"r-----------------------~ I ••• I I •• fig.1 ~I_""II"'M' 40 c~ co 10 • r 60x10' kc.ut.,J CUCU ! 0 _!45X10'kc.uti l E'c"o 30f- Luminous-well burner "'cu Heating time 7.6m ",'" cuO Slab temperelure 9BOl; c.S ~cu 20 f- -~ .- ... 0>( -~------o- 45~ ,I \, .r:.~ , CJ)CU 10f- ~ Convenfional burner , :JO ',!I} .o... Ecu ~- . 0 I I I I I CD ~ ~ fI) ~ ~ ell • • • 0 0 200 400 600 800 1000 ,.. . _' .... ,., .. Distance between burner and slab [mm] Teaperature Distribution at the Surface Fi,,1 c.ill betn lev lliinous hlln 1M Cennotiwl ... Df NeN LUlinous Wall Burner Table. 1 Coiparison of Chancteristlcs of Conventional MId Kev III i MUS Wa \I 8\rner Conventional NSC type Luminous-Wall Burner Luminous-WaU Burner Basic . 1;:~':::~;:;:i .. nol ~;:In.t MUlti-hole plete structure t Pre-mixed ge8 Pre-mixed gee Panel temc>erature max. 900t 1200t Unltorm tempera-ture distribution ±20t ±20t AciJstabie maxilun max. 20x 10' kcal/ffl'hr 100x 10'kcal/m'hr combustion load Heat responsive-about 1 minute about 1 minute ness 8 |