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... the econom- ically optimal range of h-p steam turbine exhaust pressures of 285 to 395 lb /in 2 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... efficient firing of gaseous and liquid fuels upstream of the HRSG, thereby increasing the output Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... efficiency of any tur- bogenerator used in central-station, industrial, marine, and other plants. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

Ngày tải lên: 04/07/2014, 07:20

... at the inlet, reducing water flow, during periods of river or sea pollution by external sources. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... / h (31.5-kg/ s) steam turbine exhausting at 2 inHg absolute (6.8 kPa). Determine the number of Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... per degree difference between the wet-bulb temperature of the air and the entering warm water. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... percent; Nitrogen ϭ 0.8 percent by volume. First convert the analysis to a percent weight basis: Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... to moles, assume that 100 lb (45 kg) of the fuel is being considered. Set up a tabulation thus: Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... the dry air required per million Btu (1.055MJ) of fuel fired on an HHV basis for various fuels. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... the outside, ЊF(ЊC); R ϭ resistance of the wall to heat flow ϭ L/(kXA), where L ϭ length of path Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... temper- ature correction factor. Or, [(385 Ϫ 375)/ (400 Ϫ 375)](1.273 Ϫ 1.255) ϩ 1.255 ϭ 1.262. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... such plants. The data present in these comments on new fuels for boilers is from Power magazine. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... is used for selecting hot-water heaters for buildings, marine, and portable service. Various au- Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... output, Btu). Or, SR ϭ 3413/369.1 ϭ 9.25 lb/kWh (4.2 kg/kWh). With the steam rate known, the nonex- Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... Inc.) TABLE 1 Multipliers for Base Heat-Transfer Rates [For tube OD 5 ⁄ 8 to1in(1.6 to 2.5 cm) inclusive] Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... Polsky, President, Indeck Energy Services, Inc., as ‘‘the simultaneous production of useful thermal Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... rea- sonable constant, cost-effective supply of essentially free electric power for general building use. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... gas. Steam at 30 lb /in 2 (abs) (206.8 kPa) has a temperature of 250.33ЊF (121.3ЊC). Thus, the Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... 12.7, 1 to 25.4, 2 to 50.8, 4 to 101.6, 6 to 152.4 10 to 254, and 20 to 508. (Hydraulic Institute.) Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... /20,000 is 660; hence, we would choose a motor or turbine driver whose rpm does not exceed 660. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... the chart only for pumps handling uniform liquids; slurries, gels, paper stock, etc., may cause Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... piping at el- evated temperatures conveying steam, water, oil, gas, or other fluids or vapors. To Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... coefficient and are somewhat easier to use. Their accuracy equals that of the flow coefficient method. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... ft/s (1288.7 m/s) An alternative solution uses Fig. 1. With a D/t ratio ϭ 1.402/ 0.049 ϭ 28.6 for Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... oil-cooled power pistons. Compressor, left, uses metallic piston-rod packing (Cooper- Bessemer Corp.). Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... cool the air- compressor cylinders, Fig. 10. The engine power cylinders, which usually operate Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... column 4, Table 3. The values shown represent typical load factors encountered in industrial plants. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... super-capacity elevators. A 25-hp (18.7-kW) mo- tor would probably be chosen for this elevator. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... the website. MATERIALS HANDLING 10.21 FIGURE 6 Duct resistance chart. (American Air Filter Co.) Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... it is wise to verify the choice before a final decision is made. Table 1, presented by Harold V. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... of ⌬T i /⌬T M and ⌬T o /⌬T M may be used, as long as a horizontal orientation on the tubeside is used with a Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... 150ЊF (83.3 ЊC); L ϭ 300 Ϫ 230 ϭ 70ЊF (38.9ЊC). Then LMTD ϭ (150 Ϫ 70) / ln (150 / 70) ϭ 105ЊF (58.3ЊC). Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... min/h) ϭ 6000 gal/h (22,710 L / h), the weight flow rate of the oil, using the weight of water of Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... of heating water for either domestic or process uses. A pump, Fig. 8, is used to force-circulate Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... 1002 ƒ *This may also be obtained by extrapolating the superheated vapor properties in steam tables. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... cooling (U.S. Patent 3918525 and other patents pending). (Gershon Meckler, P.E. and HPAC magazine.) Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

Ngày tải lên: 04/07/2014, 07:20

... clarity and solids concentration at G levels between 1,800 and 2,500 times the force of gravity. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... assuming air contains 23.2 percent oxygen by weight and the density of air is 0.075 lb/ft 3 is: Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... (393.6 m / d) w 8d Note that in case (a) or (b) above, the weight of sludge wasted is the same (3933 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... imperviousness of the soil. This means that less rainwater will reach the sewer because the coefficient of Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... requirements for a variety of industries. Table 9 shows a few typical water needs for selected industries. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... has a minimum average crushing strength of 6000 lb (26.7 kN) by the three-edge-bearing method. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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... heaters and ten ranges, each of which has four top burners and one oven burner. What maximum gas Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... reserve for fire-fighting use. (c) Vertical standpipe for water storage. (Mueller Engineering Corp.) Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright ... each branch vent connected to it, if desired. Use the NPC, or Table 8, to determine the vent size. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright...

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Ngày tải lên: 04/07/2014, 07:20

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Ngày tải lên: 04/07/2014, 07:20

Ngày tải lên: 04/07/2014, 07:20

Ngày tải lên: 04/07/2014, 07:20