Ventilation Air Conditioning

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

By F. Porges (Auth.)

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Extra info for Handbook of Heating, Ventilating and Air Conditioning

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Care should be taken to avoid either bright sunlight or dark buildings in the background. 47 48 Combustion Sensible heat carried away by flue gases 10 12 H 16 18 20 22 2k 26 28 30 HEAT LOSS AS PER CENT OF CALORIFIC VALUE HEAT LOSS IN FLUE OASES FOR COAL 32 3U 36 38 Combustion Sensible heat carried away by flue gases 10 12 U HEAT 16 18 20 22 2L 26 28 30 L O S S A S P E R CENT O F C A L O R I F I C V A L U E H E A T L O S S IN F L U E G A S FOR HEAVY OIL 10 12 H HEAT 16 18 20 22 2L 26 28 L O S S A S P E R CENT OF C A L O R I F I C V A L U E HEAT L O S S IN F L U E G A S FOR G A S OIL 30 32 49 50 Combustion Chimney sizes Theoretical chimney draught 1 1 Ä= 3 5 4 # 1 where h=draught H—chimney T\—absolute Τ2=absolute h=7MH in mm water height in m temperature outside chimney Κ temperature inside chimney Κ (rrk where h=draught in inches of water H=chimney height in ft Ti=absolute temperature outside chimney °R Τ2—absolute temperature inside chimney °R.

10-1904). Flanges for pipes, valves, and fittings for working steam pressure above 150 lb and up to 2 250 lb/in 4 3 6 5 1 Ka) 2 Nominal Dia. of Pipe Actual Outside Dia. of Wrought Pipe in Dia. of Dia. of Number Flange Bolt of Circle Bolts Dia. ο/ Thickness of Flange Bolts Cast Steel and Bronze, in in in 3A 4 4 4 i i * * 3* 4* 5 4 4 4 2 11 * 11 5* 6* 7 8 8 8 in 1 7 11 3 2 1 4 1 ι* ι* 1H 4* 4* 4* in 3* 3* Steel (stamped or forged) screwed or riveted on with boss or welded on with fillet 2 2| 2* 3 3* 3 3| 4 7* 8 8* 4 5 4* 5| 9 11 7* 9* 8 8 6 7 8 6* 7{ 8| 12 13* 14* 10* 11* 12* 12 12 12 2 9 10 9{ 10| 16 17 14 15 12 12 7 8 7 8 17* 18* 19* 16 16 16 7 Ϊ 12 *13 14 12* 14 15 19* 20* 21* 15 16 *17 16 17 18 22* 24 25* 20* 21* 23 16 20 20 18 •19 20 19 20 21 26* 27* 29 24 25* 26* 20 20 24 21 *22 *23 24 22 23 24 25 30 31 32* 33* 27* 28* 29* 30* 24 24 24 24 1 8 5* 5* 6* in _2_ 2 8 6 1 6 1 6 I i I i 4 7 8 7 8 i 2 8 1 ί Η Η 3 4 3 4 ι* 2 1* Η Η Η ι* Η !

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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