Tài liệu Handbook of Mechanical Engineering Calculations P17 doc
Tài liệu Handbook of Mechanical Engineering Calculations P17 doc
... (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 ... intake and return passages of the solar system. The wheels permit the transfer of thermal energy from the return to the intake side of the system and offer a means of controlling humidity.For ... for example, an averagerecovery of 40 percent of 1200 Btu/ft2(3785 W/ m2) of solar energy of slopingsurface would require approximately 100 ft2(9.3 m2) of collector for the 50,000-Btu...
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Tài liệu Handbook of Mechanical Engineering Calculations P7 docx
... Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 7.46PLANT AND FACILITIES ENGINEERING 0.392ϩ0.784ϭ138.226 ft (42.1 m), say 140 ft (42.7 m) of water. ... is 80 percent of bep capacity. For a specific speed of 1090, asbefore, the percentages of bep head and efficiency are shown in Figs. 36 and 37:79.5 percent of bep head and percent of bep efficiency. ... r/min. For a specific speed of 1090, the percentages of bep capacity, effi-ciency, and power are 107 percent of the capacity, 94 percent of the efficiency, and108 percent of the bhp. To get the actual...
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Tài liệu Handbook of Mechanical Engineering Calculations P8 doc
... subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 8.10PLANT AND FACILITIES ENGINEERING residential, industrial), and other plants. Both ... cost of each type of pipeuses the capital-recovery equation, Aϭ(PϪL)(CR)ϩLi1ϩc, where Aϭannualcost, $; Pϭinitial cost of each type of piping, $; Lϭsalvage value of each type of ... use plots of friction lossavailable in engineering handbooks. Cameron Hydraulic Data, Standards of theHydraulic Institute, and from pump engineering data. Figure 30 shows one set of Downloaded...
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Tài liệu Handbook of Mechanical Engineering Calculations P11 doc
... website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 11.10PLANT AND FACILITIES ENGINEERING TABLE 2Heat-Exchanger Fouling Factors*total resistance to heat transfer. Then Uϭthe reciprocal of ... tube manufacturer’s engineering data show that a finnedtube of these dimensions has 5.8 ft2 of area per linear foot (1.8 m2/lin m) of tube.To compute the linear feet L of finned tubing required, ... heat HmBtu required to melt a solid is Hmϭ(weight of solid melted, lb)(heat of fusion of the solid, Btu /lb). Since the heat of fusion of lead is 10 Btu/ lb (23.2kJ/kg), Hmϭ(600)(10)ϭ6000...
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Tài liệu Handbook of Mechanical Engineering Calculations P13 doc
... acceleration force (G), defined as multiples of gravity, is a function of the rotational speed of the bowl and the distance of the particle from the axis of rotation. In the centrifuge, the centrifugal ... reserved.Any use is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 13.30ENVIRONMENTAL CONTROLbasin in series with the first. The power ... effluentwastewater is to have a BOD5 of 20 mg/L. Both filters are to have a depth of 7feet (2.1 m) and a recirculation ratio of 2. Filter media will consist of rock. Sizeboth stages of the trickling filter...
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Tài liệu Handbook of Mechanical Engineering Calculations P15 docx
... (2.1 cm /m) of length?Calculation Procedure:1. Sketch the building roofFigure 13 shows the building roof and machinery room roof. Indicate on the sketchthe major dimensions of the roof and machinery ... replacement of existing water closets which use excessive amounts of water,in view of today’s new environmental laws and regulations.A further benefit of the ULF units is the smaller amount of water ... sizes of brasspipe of standard internal diameter that correspond to the velocity limit of 4 and 8ft/s (1.2 and 2.4 m /s), and to the friction limit of 4.0 lb/in2/100 ft (0.9 kPa/ 100m) of total...
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Tài liệu Handbook of Mechanical Engineering Calculations P16 doc
... of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS HEATING, VENTILATING, AND AIR CONDITIONING16.133TABLE 32Flow of Air in Natural-Draft Flues, ft3/(min⅐ft2)[m3/(min⅐m2)]*(53.3-cm) ... W).4. Compute the total heat loss of the buildingThe total heat loss of a building is the sum of the individual heat losses of thewalls, glass areas, roofs, and floor. In large buildings the ... the same method of supply and return is best chosenfor the of ce system.Note that Table 4 lists six different types of two-pipe steam heating systems.Choice of a particular type of two-pipe system...
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Tài liệu Handbook of Mechanical Engineering Calculations P21 docx
... proceeds.This procedure is the work of Richard M. Phelan, Associate Professor of Me-chanical Engineering, Cornell University. SI vales were added by the handbook editor.SELECTION OF A RIGID FLANGE-TYPE ... for a reasonablewear rate.The shear of the screw threads with a factor of safety of 2 and the shear stressdetermined earlier gives a length of engagement of pQLϭf.s.e,screwdts,ii s screwwithf.s.ϭ2pϭ1⁄4ϭ0.250 ... CONTROL21.26DESIGN ENGINEERING 4. Determine the length of thread engagementThe specified length of thread engagement will be the greatest of the lengths re-quired for adequate shear strength of the screw...
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Tài liệu Handbook of Mechanical Engineering Calculations P24 docx
... 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, Purdue University; and ... procedure is the work of Richard M. Phelan, Associate Professor of Me-chanical Engineering, Cornell University.Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)Copyright ... (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...
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Tài liệu Handbook of Mechanical Engineering Calculations P26 doc
... standard time of X, min)(number of pieces)ϩ (setup time of X, min) ϭ (unit standard time of Y, min)(number of pieces)ϩ (setup time of Y, min). For these two machines, since the number of pieces ... is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 26.20 DESIGN ENGINEERING TIME AND POWER TO DRILL, BORE,COUNTERSINK, AND REAMDetermine ... Length of cut is the length of the relief, Fig. 9. A small amount of time is also required to handfeed the tool tothe minor diameter of the relief. This time is best obtained by observation of theoperations.The...
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