Tài liệu Handbook of Mechanical Engineering Calculations P15 docx
Tài liệu Handbook of Mechanical Engineering Calculations P15 docx
... Heating Values of Commercial GasesTABLE 21Capacities of Gas Pipes [Losses of pressure are shown in inches of water per100 ft (millimeters per 30.4 m) of pipe, due to the flow of gas with a specific ... given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS PLUMBING AND DRAINAGE FOR BUILDINGS AND OTHER STRUCTURES15.35TABLE 13Demand Weight of Fixtures in Fixture UnitsЊFIGURE ... size for each roofDecide whether the small roof area, i.e., the machinery room roof, will be drainedby separate leaders to the ground or to the main roof area. If the small roof areais drained...
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Tài liệu Handbook of Mechanical Engineering Calculations P7 docx
... reserved.Any use is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 7.38PLANT AND FACILITIES ENGINEERING FIGURE 23 Negative lift (gravity ... this handbook. Once the required flow rate is determined, apply a suitable factor of safety. Thevalue of this factor of safety can vary from a low of 5 percent of the required flowto a high of ... pumpsare generally used. Mechanical seals are becoming more popular for all types of centrifugal pumpsin a variety of services. Although they are more costly than packing, the mechanical seal reduces...
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Tài liệu Handbook of Mechanical Engineering Calculations P21 docx
... exact selection of a spe-cific make of belt, consult the manufacturer’s tabulated or plotted engineering data.Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... percent of rated torque to protect the gears and other parts of the drive. Space limitations dictate an upper limit of 4 in (10.2 cm) and a lowerlimit of 2.5 in (6.35 cm) for the diameters of the ... 167.8ϭ37.6.Check the manufacturer’s engineering data for the ratios of available gearedspeed reducers. Thus, a study of one manufacturer’s data shows that a speed-reduction ratio of 38 is available by using...
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Tài liệu Handbook of Mechanical Engineering Calculations P24 docx
... MECHANICAL AND ELECTRICAL BRAKES 24.17This procedure is the work of Allen S. Hall, Jr., Professor of Mechanical En-gineering, Purdue University; Alfred R. Holowenko, Professor of Mechanical Engineering, ... Doughtie, Professor of Mechanical Engineering, University of Texas.DESIGNING A BRAKE AND ITS ASSOCIATEDMECHANISMSDesign a hoist for the building industry to lift a cubic yard (0.76 m3) of concreteat ... the Terms of Use as given at the website. MECHANICAL AND ELECTRICAL BRAKES24.16 DESIGN ENGINEERING (3.8 cm). For a coefficient of friction of 0.3 and a maximum permissible pressure of 150 lb/in2(1033.5...
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Tài liệu Handbook of Mechanical Engineering Calculations P3 pdf
... combustionand increases the weight of the products of combustion per pound (kilogram) of coal burned. Therefore, the weight of the products of combustion is the sum of theweight of the combustion products ... cu m) of natural gas; 1300 cu ft of air (36.8 cu m) per gal (0.003785 cu m) of No. 2 fuel oil; 1450 cu ft of air (41cu m) per gal of No. 5 fuel oil; 1500 cu ft of air (42.5 cu m) per gal of No. ... combustion of 1 lb (0.45 kg) of coalϭsum of nitrogenand oxygen requiredϭ8.4228ϩ2.5444ϭ10.9672 lb (4.975 kg) of air per pound(kilogram) of coal burned.3. Compute the weight of the products of...
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Tài liệu Handbook of Mechanical Engineering Calculations P4 pptx
... Mƒϭlb of moisture per lb fuelburned; Maϭlb of moisture per lb of dry air to furnace; Cbϭlb of carbon burnedper lb of fuel burnedϭCϭRCr; Crϭlb of combustible per lb of refuse; ... controlled.Related Calculations. Developing the performance characteristics of eachpiece of equipment as a function of load is the key to determining the mode of operation and loading of each type of steam ... lb of refuse; Rϭlb of refuse per lb of fuel; H2,N2,C,O2,Sϭlb of each element per lb of fuel, asfired; CO2, CO, O2,N2ϭpercentage parts of volumetric analysis of dry combustiongas...
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Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf
... Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 5.4POWER GENERATIONm) are used. Use the Standards of the Bleeder Heater Manufacturers Association,Inc., ... output of the existing system isincreased, as noted, because of increasing flow to the steam turbine’s condenser.This increased output offsets the cost of interconnection to the boiler.Related Calculations. ... more heaters. Plot the percentimprovement vs. number of stages of extraction, Fig. 6, to observe the effect of additional heaters. A plot of this type shows the decreasing gains made by addi-tional...
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Tài liệu Handbook of Mechanical Engineering Calculations P6 pdf
... (www.digitalengineeringlibrary.com)Copyright © 2006 The McGraw-Hill Companies. All rights reserved.Any use is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING ... introduced everyyear.*Elliott, Standard Handbook of Power Plant Engineering, McGraw-Hill, 1989.Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... quantity of dust entering the engineEach 1000 ft3(28.3 m3) of air entering the engine contains 1.6 gr (103.7 mg) of dust. Thus, during every minute of engine operation, the quantity of dust...
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Tài liệu Handbook of Mechanical Engineering Calculations P8 doc
... surges result. Theamplitude of the pressure surge is a function of the rate of change in the velocity of the mass of fluid. This procedure shows how to compute the amplitude of thepressure surge with ... factor of 2 for traps installed between aboiler and the end of a steam main; traps at the end of a long steam main or ahead of pressure-regulating or shutoff valves usually have a safety factor of ... ftϩequivalentlength of fittings, ft. Using data from the Hydraulic Institute, Crocker andKing—Piping Handbook, earlier sections of this handbook, or Fig. 4, find theequivalent length of a 90Њ4-in...
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Tài liệu Handbook of Mechanical Engineering Calculations P9 pdf
... (www.digitalengineeringlibrary.com)Copyright © 2006 The McGraw-Hill Companies. All rights reserved.Any use is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING ... (339.6 m3/min) of air at a pressure of 14 lb/in2(abs) (96.46 kPa) and a temperature of 60ЊF (15.6ЊC).Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... elsewhere in this handbook can be helpful to the designer in choosing thebest type of tower to use for a given installation of air or gas compressors.Straight flow-through cooling of small compressors...
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