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362 APPENDIX X TABLE 4 HEAT CAPACITY OF AIR SUPPLIES AND GAS. POINTS FOR CURVES AND TO BE USED IN SPOTTING THE INTERSECTIONS JNDICATING THE EFFECTS OF PREHEAT This particular producer gas is rather high in CH4 which will have a tendency to dissociate at high temperatures. This has not been considered in order to find the limiting combustion conditions due to air supply. HEAT CAPACITY OF AIR SUPPLY Temper-tares, Per Cent. Vol. 200° 400° 600° 800° 1000° 1200° Reference Letters Table 5 Air 60 ~80 98.55 137 278 425 573 732 893 D II K L M N P 0 R S 131.40 183 371 566 765 976 1189 100 164.25 228 463 708 956 1220 1486 120 197.10 274 556 850 1147 1464 1784 140 229.95 320 648 991 1338 1708 2081 180 260 295.65 411 594 834 1204 1274 1721 2197 2676 427.05 1840 2485 3173 3865 340 558.45 776 1575 2407 3251 4149 420 500~ 689.85 959 1945 2973 4015 5126 821 . 25 1140 2S21 3535 4774 6094 HEAT CAPACITY OF GAS N2 + 90.00 125 263 368 525 669 814 C02 3.90 7 16 25 35 48 61 H2O 0.60 1 2 4 5 7 8 CH4 5.50 12 27 44 63 87 .112 S 145 308 441 623 811 995 B