HVAC Engineer's Handbook by F. Porges PDF

By F. Porges

ISBN-10: 0750646063

ISBN-13: 9780750646062

Within the virtually sixty years because the booklet of the 1st variation of HVAC Engineer's instruction manual, it has develop into well known as a hugely worthy and definitive reference for HVAC engineers and technicians alike, and people engaged on family cold and warm water prone, gasoline provide and steam services.

The eleventh variation keeps within the culture of past variants, being simply portable and consequently an essential component of the HVAC engineer or technician's day-by-day instruments.

Newly up to date info on normal air flow, air flow premiums, loose cooling and night-time cooling, make the eleventh version of the HVAC Engineer's guide a necessary resource of information.

Fred Porges has labored in either the producing and procedure industries, and have become a associate in a construction prone consultancy in 1962. He has held senior positions with layout contractors, and his adventure covers each construction carrier and kind of creating from colleges to housing, factories to laboratories.

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8 t ',t\\kkk\,x 10 uj 9 / f I 8 tD 7 b. k,~o:, \ ' , \ \ 6 \\. ~ ~.. ~ J ' ~ 20 22 24 26 28 30 32 HEAT LOSS AS PER CENT OF CALORIFIC VALUE HEAT LOSS IN FLUE GASES FOR NATURAL GAS i 18 | ~t ttl~ 15 ,\ 13 12 li\ \ ttLkk 17 14 L\ \~ ' , i\ \ \x\ ,r ~,\" \ \;, \\ ,,x,oo~ 10 ~ ~ w - \ \ 9 10 12 . \ 16 . 18 20 22 ~~ ~ 24 26 28 30 32 34 HEAT LOSS AS PER CENT OF CALORIFIC VALUE HEAT LOSS IN FLUE GASES FOR TOWN GAS 36 38 Combustion 35 S e n s i b l e h e a t c a r r i e d a w a y by flue g a s e s i :y 14 _ ~ N.

9 \ \ ~ . 5 ! , ~.. 8 - 7 L k~- \'~'~-k \ ~ 6 10 12 14 16 18 20 22 24 26 28 HEAT LOSS AS PER CENT OF CALORIFIC VALUE HEAT LOSS IN FLUE GAS FOR GAS OIL 30 36 HVAC E n g i n e e r ' s H a n d b o o k Chimney sizes Theoretical c h i m n e y d r a u g h t where h - d r a u g h t in m m w a t e r height in m T 1 - absolute t e m p e r a t u r e outside c h i m n e y K T 2 - absolute t e m p e r a t u r e inside c h i m n e y K H-chimney where h = draught H-chimney T1--absolute T 2 - absolute in inches of w a t e r height in ft t e m p e r a t u r e outside c h i m n e y ~ t e m p e r a t u r e inside c h i m n e y ~ Chimney area The chimney should be designed to give a m a x i m u m velocity of 2 m / s (7 f t / s ) for small furnaces, and 1 0 - 1 5 m / s for large furnaces.

D I S C H A R G E ~J- GRILLE. L~I-GRILLE j , ,! FRESH AIR INLET FAN FAN FRESH AIR INLET II BOILER 1 SINGLE ENTRY FAN FRESH AIR INLET BOILER 2 DOUBLE ENTRY FAN, TWO AIR INLETS ~ DlSCHARGE LOW LEVEL GRILLE ! FRESH AIR INLET FAN BOILER 3 DOUBLE ENTRY FAN, SINGLE AIR INLET To reduce CO2 concentration to 1%, fan must handle 100 m 3 mixed volume per 1 m 3 natural gas fuel burnt. In determining fan pressure allowance must be made for pressure due to local wind conditions. Discharge grille must have free area not less than that of flue.

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HVAC Engineer's Handbook by F. Porges

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