. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. 5820 6660 7500 e 20/0 3OI0 4010 5020 eo2o 7030 8040 9000 2380 3560 4750 59 SO 7I40 8310 9SOO 107OO 7 2730 4180^ S570 6960 8350 9750 11140 12500 3220 4820 6440 8040 9660 11250 128 70 14500 8 36&0 5540 7390 9220 1I030 12380 14720 16500 as 4180 6250 8360 104SO I2530 14620 16710 18800 9 4700 7050 9400 11750 14100 .16500 18810 21200 10 5860 8780 moo 14650 17600 20500 23400 26300 If 7I40 10700 14300 17850 2I40C 25O00 28600 32100 12 8S30 128 OO 17050 2I30O 2S600 29800 3410O 38400 Based on 500 +ack
. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. 5820 6660 7500 e 20/0 3OI0 4010 5020 eo2o 7030 8040 9000 2380 3560 4750 59 SO 7I40 8310 9SOO 107OO 7 2730 4180^ S570 6960 8350 9750 11140 12500 3220 4820 6440 8040 9660 11250 128 70 14500 8 36&0 5540 7390 9220 1I030 12380 14720 16500 as 4180 6250 8360 104SO I2530 14620 16710 18800 9 4700 7050 9400 11750 14100 .16500 18810 21200 10 5860 8780 moo 14650 17600 20500 23400 26300 If 7I40 10700 14300 17850 2I40C 25O00 28600 32100 12 8S30 128 OO 17050 2I30O 2S600 29800 3410O 38400 Based on 500 +ack Coal x Radial Brick Chimneys, W. F. Leggo 49 and furnace would be in. For the two right-angle bends in the fluesand approximately 50 ft. of steel breeching connection, the draft lossthrough the flue would be approximately in. This gives us a totaldraft loss of approximately in. and it will be noted in Table 1 thata 150 ft. stack gives a draft of ) in. at the flue opening; therefore it issafe to assume that 150 ft. is the correct Thornbury C, Laycock Abbey Barrington Courr FIG. 3. TUDOR BRICK CHIMNEYS, ENGLAND, SIXTEENTH CENTURY We also have for the convenience of the engineering world a talkieof horsepower giving sizes of chimney required (Table 2). In usingthis table, it is always well to adhere to the middle of the table as, forinstance, for 250 hp., the correct size would be 80 ft. by 3 ft. 6 in. Every chimney design must be figured out accurately for each particu-lar installation. The radial-brick chimney built today is guaranteed towithstand a 100 mile wind and the lining should be designed for theproper temperature. Having determined the size of chimney, its design is the next thingto be considered. Fig. 7 shows what is known as the standard type of 50 Transactions of Am. Soc. of Engineers 275 300 —i1 ? ? < I i 1 M M |i i ? 1 ,m:in egr-iiO 0 mo un coo 0 0 0 0 0 0 1 CO 00 coioi 00,C-. eg Ln t
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