Document 3Jb6xX5YE5y5Y1Q4Oyk4bqqx3

'"'"MS5 ij American Society-o/ HEATiNGtmd Ventilating Engineers Guide, 1935 400' JannL Chapter 24--Gravity Warm Air Furnace Systems the Warm Air Research Residence of the National Warm Air Heating Associate0*1 erected at the University of Illinois'. Leaders, Stacks and Registers. (Direct Method) living Rom< lst fior: 17250 ^ 111 = 155 6q iril leader area. See summary, Table 1; also example under Standard Code4; Artr. 3, "Basis of'Working Rules for Pipes.................... Leader diameter = 14 in. Register size = 155 sq: in. net area1. Gross area = net area -h 0.7 = 14 in.. X .16 in. Oma'sRoom.Mi'fioor: \ 15,030 + 167 = 90 sq in. leader area. See Summary Table; also example under Standard Code*, Art. 3; Basis of Working Rules for Pipes. Leader diameter = 11.4, say 12 in. ; I :Stack area = 0.7 X 90 = 63 sq in. = say 5: in. X 12 in: : Register area = 90 sq in. net area. Gross area = net area -s- 0.7 = 12 X 12 or 12 inC"><Cr 14 in. In like manner the leaders, stacks and registers are calculated for each room,in the house. , ,i Leaders, Stacks and Registers. (Code 4 Method: See Art; 3, Sec.. 1, 2, 3.) Living Room (Glass = 90, Net wall = 405, Cubic contents = 2405) . . ' / 90 , 405 , 2405 \ ,, '. ;i ^der = (,12 + W + W / 9 = 155sq,n. Register, same as Direct Method. Owner's Room (Glass = 68,- Net wa11= 394, Cubic contents = 2275) T: .. : . : Lead" . / .( 6182 +.39604 -+, 2820705 \) ,, 6 " ,,,, . 90 ^ ln- ,.\ Stack and Register, same as Direct;Method. v: Assuming all air recirculated, the minimum furnace for the plant will be:"- r''. ' Grate area -- 0.0034 X 132,370 = 450 sq in. = 24 in.:diameter at!75 F , * register temperature. (Equation 7) ' : - ' Grate area = 0.0040 X 132,370 = 530 sq in. = 26 in. diameter at 160 F' register temperature. '(Equation''8) ' ' 8`1 ': 'If provision should be made for certain outside air circulation, then increase the building heat loss by, say 25 per cent and obtain by Equation 7 a 27-in. grate and by Equations 8 and 10 a 29-in, grate. ` Experiments at the University of Illinois6 have shown that the capacity p( a furnace may be increased nearly three times by an adequate fan, . lPJans used with permission. Bathroom on third floor not heated. ^Standard Code Regulating the Installation of Gravity Warm Air Heating Systems in Residences. taa been sponsored by the National Warm Air Healing Association, the National Association of am uttal Contractors, and the American Society of Heating and Ventilating Engineers.. It is rommended ttat the installation of ail gravity warm air heaUng systems in residences be governed by * provisions of this code, the eighth edition of which may be obtained from the National Warm Air Heating jWocwiion, 3440 A.I.U. Building. Columbus. Ohio. ; \ '.;'<See University of Illinois Eng. Exi. Sta. Bulletin No. 120, p. 129.