Download Handbook of Heating, Ventilating and Air Conditioning by F. Porges (Auth.) PDF

By F. Porges (Auth.)

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000 150X230 200X330 330X450 400X600 600X800 Combustion air A boiler house must have openings to fresh air to allow combustion air 2 to enter. 5 i n per 2000 Btu/hour boiler rating). Combustion 51 Flue dilution Flue gases from gas burning appliances can be diluted with fresh air to enable the products of combustion to be discharged at low level or near windows. Typical arrangements iter FRESH AIR INLET r F AN LOW LEVEL DISCHARGE GRILLE . M ^LOW LEVEL [Γ μ DISCHARGE GRILLE FAN FRESH AIR INLET BOILER 1 SINGLE ENTRY FAN I FRESH AIR INLET BOILER 2 DOUBLE ENTRY FAN, TWO AIR INLETS -LOW LEVEL DISCHARGE GRILL FRESH AIR INLET FAN BOILER 3 DOUBLE ENTRY FAN, SINGLE AIR INLET 3 To reduce C 0 2 concentration to 1%, fan must handle 100m mixed volume 3 per l m natural gas fuel burnt.

0 66 70 max. 5 66 30 max. 5 max. 0 Gas oil Kerosine Common Name Classification of Oil Fuels B a s e d on B S 2 8 6 9 Combustion 53 54 Combustion Classification of Coal Based on volatile matter and coking power of clean material Volatile matter Class *f, . 7X10 4 4 11X1044 4 di 4 4 4 4 di di 20X10 4 4 di 110X1044 di 220X10 4 4 di ii =1*2=head loss in feet of oil per foot of pipe or metres of oil per metre of pipe. (Length of pipe to include allowances for bends, valves and fittings) fi=üov/ of oil in gal/hr / 2 = f l o w of oil in litre/s d\= internal diameter of pipe in inches d2=internal diameter of pipe in mm.

Flanges for pipes, 2 valves, and fittings for working steam pressures up to 50 lb/in 1 2 la 3 Nominal Actual Dia. of Dia. of Pipe Outside Flange Bolt π · ι Size Dia. of Circle Wrought Pipe in in in 1 7 2 ι 4 Η It 21 3 2 ITV 1« 4 4i 4} 5* 2 2| 6 Ά 3 3y 4 5 3 6* 4 4j 5t 5 Number of Λ ι Bolts Diam. (stamped or forged) Iron £>teel screwed or riveted on with boss or welded on with fillet in 2| 2i 3| 3-Λ 3* 4y 6(a) 6(b) 6(c) 4 4 4 4 4 4 4 in in 1 1 Τ 1 Τ 1 Τ 2 2 i 1 6* 4 4 4 8T 10 7 8} 4 8 1 7+ 8 5 5} 8 1 8 ί 8 i i 6 7 8 6t 7{ 8| 11 12 13} 9} 10} Hi 8 8 8 9 10 91 10} 14| 16 12} 14 8 8 12 *13 14 18 19} 20} 16 17} 18* 12 12 12 i4 15 16 *17 121 14 15 16 17 18 2H 22} 24 19* 20* 21} 12 12 12 18 *19 20 19 20 21 25} 26j 27} 23 24 25} 12 12 16 21 *22 *23 24 22 23 24 25 29 30 31 32± 26j 27j 28| 29} 16 16 16 16 t Τ 1 Τ 1 Τ 1 4 2 8 2 8 2 8 1 2 8 1 i I_L 1 6 2 11_L6 2 2 _2_ 1 6 _2_ in 1 6 _1_ 1 6 J_ 1 6 1 4 1 4 1 6 1 6 1 6 _i_ S1 6 i 1 6 4 2 12.

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