Tài liệu Handbook of Mechanical Engineering Calculations P19 pptx

... (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 ... diameter Use the speed ration of the shafts to determine the diameter of the small sheave. The speed ratio of the shafts is the ratio of the speed of the high-spe...

Ngày tải lên: 25/12/2013, 23:19

... M ƒ ϭ lb of moisture per lb fuel burned; M a ϭ lb of moisture per lb of dry air to furnace; C b ϭ lb of carbon burned per lb of fuel burned ϭ C ϭ RC r ; C r ϭ lb of combustible per lb of refuse; ... lb of fuel ϭ W c (14,150), where W c ϭ lb of unconsumed carbon in refuse per lb of fuel fired. With an ash and refuse of 9.42 percent of the dry coal and combustible in the...

Ngày tải lên: 17/12/2013, 11:15

... Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 14.10 ENVIRONMENTAL CONTROL TABLE 3 Effect of Submergence on Efficiencies of Air Lift* Ratio D / h 8.70 5.46 ... known of the efficiency of the average air-lift installation in small waterworks. Tests show efficiencies in the neighborhood of 45 percent for depths of 50 ft (15 m) down to 20...

Ngày tải lên: 25/12/2013, 23:18

... Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 20.10 DESIGN ENGINEERING Impact occurs as each pair of teeth returns to mesh to complete its contact ... is the moment of inertia of the high-speed and low-speed assemblies of this gearset? Calculation Procedure: 1. Compute the moment of inertia of each gear The moment of...

Ngày tải lên: 25/12/2013, 23:19

... combustion and 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 the weight of the combustion products ... /18)(0.013) ϭ 0.0209, say 0.021 mol of water per mol of air. The product of this and the moles of air gives the total moles of Downloaded from Digital Engineer...

Ngày tải lên: 17/12/2013, 11:15

... reserved. Any use is subject to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 5.10 POWER GENERATION traction throttle flow is (SR)(kW output) ϭ 9.25(10,000) ϭ 92,500 ... output of the existing system is increased, as noted, because of increasing flow to the steam turbine’s condenser. This increased output offsets the cost of...

Ngày tải lên: 17/12/2013, 11:15

... average heat of vaporization of 1000 Btu / lb (2330 kJ / kg) of steam, this exhaust gas flow could generate 8,880,000 /1000 ϭ 8880 lb/h (4032 kg/h) of steam. If oil with a heating value of 145,000 ... types of fuels and the internal-combustion engines using them. Note that where the cost of the fuel is high, the cost of the engine is low; where the cost of the fuel is low, th...

Ngày tải lên: 17/12/2013, 11:15

... Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 7.46 PLANT AND FACILITIES ENGINEERING 0.392 ϩ 0.784 ϭ 138.226 ft (42.1 m), say 140 ft (42.7 m) of water. ... is 80 percent of bep capacity. For a specific speed of 1090, as before, the percentages of bep head and efficiency are shown in Figs. 36 and 37: 79.5 percent of bep head...

Ngày tải lên: 17/12/2013, 11:15

... subject to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 8.10 PLANT AND FACILITIES ENGINEERING residential, industrial), and other plants. Both ... cost of each type of pipe uses the capital-recovery equation, A ϭ (P Ϫ L)(CR) ϩ Li 1 ϩ c, where A ϭ annual cost, $; P ϭ initial cost of each type of piping, $; L ϭ salvage...

Ngày tải lên: 17/12/2013, 11:15

... (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 m 3 /min) of air at a pressure of 14 lb/in 2 (abs) (96.46 kPa) and a temperature of 60 Њ F (15.6 Њ C). Downloaded from Digital Engineering Library @ McGraw-H...

Ngày tải lên: 17/12/2013, 11:15