... ft= b 1ft= c 1. 5 ft= θ 1 10 deg= θ 2 30 deg= θ 3 10 deg= Solution: Guesses F A 1lb= F B 1lb= F C 1lb= Given Σ M B = 0; F A cos θ 3 () bWa+ F C cos θ 1 () ac+()− 0= Σ F x = 0; F C sin θ 1 () F B sin θ 2 () − ... publisher. Engineering Mechanics - Statics Chapter 5 Units Used: kN 10 3 N= Given: F 500 N= a 0 .15 m= L 3m= Solution: The initial guesses w 1 1 kN m = w 2 1 kN...
Ngày tải lên: 21/07/2014, 17:20
... /kWh) 1 ⁄ 4 10 0 ϫ 1 ⁄ 4 ϭ 25 50 ⁄ 25 ϩ 9.5 ϭ 11 .5 (5.22) 2 ⁄ 4 10 0 ϫ 2 ⁄ 4 ϭ 50 50 ⁄ 50 ϩ 9.5 ϭ 10 .5 (4.77) 3 ⁄ 4 10 0 ϫ 3 ⁄ 4 ϭ 75 50 ⁄ 75 ϩ 9.5 ϭ 10 .17 (4.62) 4 ⁄ 4 10 0 ϫ 4 ⁄ 4 ϭ 10 0 50 ⁄ 10 0 ϩ 9.5 ϭ 10 .00 ... $/h 15 35 35 11 5 85 35 15 5 Change in wastewater cost, $/h 1 17 17 2 1 1 30 Change in capital cost / net output, $ / kW 18 0 16 5 230 75 15...
Ngày tải lên: 09/11/2013, 04:15
Handbook of Mechanical Engineering Calculations P2
... U ϭ 585(0.95) ϭ 555. Then x ϭ 0. 812 (555/ 500) ϭ 0.90; e x ϭ 2. 718 3 0.90 ϭ 2.46; t 2 ϭ 10 1 .1 Ϫ (10 1 .1 Ϫ 85/ 2.46) ϭ 94.6 Њ F (34.8 Њ C). Check ⌬ t ϭ t s Ϫ t 2 ϭ 10 1 .1 Ϫ 94.6 ϭ 6.5 Њ F (3.6 Њ C), ... is 0.75(26) ϭ 19 .5 inHg (66.0 kPa). Converting to feet of water, using 1. 0 inHg ϭ 1. 134 ft (3.4 kPa) of water, we find 19 .5 (1. 134) ϭ 22 .1 ft (66 .1 kPa) of wate...
Ngày tải lên: 09/11/2013, 04:15
Tài liệu Handbook of Mechanical Engineering Calculations P3 pdf
... (10 07.2) Carbon monoxide gas 670 (10 38.2) Refinery and oil gas 720 (11 15.6) Natural gas 730 (11 31. 1) Furnace oil and lignite 745–750 (11 54.4 11 62 .1) Bituminous coals 760 (11 77.6) Anthracite coal 780 (12 08.6) Coke ... fuel oil at $1. 10 per gallon, the monetary savings will be $1. 10 (14 48.3) ϭ $15 93 .13 . If the preheater cost $6000, the simple payoff time would be $6000/...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P4 pptx
... G ϭ [11 (0 .15 ) ϩ 8(0.036) ϩ 7(0. 814 )]/ [3(0 .15 )](0.678 ϩ 0.032/ 2.67) ϩ 0.032/ 1. 60; G ϭ 11 .72 lb/ lb (11 .72 kg/ kg) fuel. And A ϭ 11 .72 Ϫ 0.69 Ϫ 0. 012 Ϫ 7.94(0.05 Ϫ 0.089/ 8) ϭ 10 . 71 lb/lb (10 . 71 kg/kg) fuel. ... G ϭ [11 (0 .16 ) ϩ 8(0.26) ϩ 7(0 .18 4)]/ [3(0 .16 )](0.678 ϩ 0.032/ 2.67) ϩ 0.032/ 1. 60; G ϭ 11 .03 lb/lb (11 .03 kg /kg) fuel; A ϭ 11 .03 Ϫ 0.69 Ϫ 0....
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf
... OD ϭ 3 ⁄ 8 ϩ 5 ⁄ 8 ϭ 1 in (2.5 cm). The number of tubes per ft 2 of tube sheet ϭ 16 6/(pitch) 2 , or 16 6 /1 2 ϭ 16 6 tubes per ft 2 (17 86.8 per m 2 ). Since the heater has 11 2 tubes, the area of the tube sheet ϭ 11 2 /16 6 ϭ 0.675 ... rate, lb / h)(H 1 Ϫ H 2 )/3 413 ϭ (1 ϫ 10 6 ) (15 11. 3 Ϫ 13 79.3)/3 414 ϭ 38,675.7 kW. Downloaded from Digital Engineering Librar...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P6 pdf
... 1, 400 Speed, rpm 1, 800 2,200 (b) SI Values hp kW in lb Nm 15 11 .2 850 96 .1 20 14 .9 900 10 1.7 25 18 .7 950 10 7.4 30 22.4 10 00 11 3.0 35 26 .1 105 0 11 8.7 FIGURE 12 Torque curves for typical air-cooled internal-combustion ... ENGINES 6. 41 35 30 25 20 15 11 00 10 50 10 00 950 900 850 Horsepower Torque, inch-lb. 1, 000 1, 400 Speed, rpm 1, 800 2,200 (a) 35 30...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P7 docx
... pressure of 1 in (25.4 mm) Hg ϭ 1. 133 ft (0.35 m) of water.] Thus, the absolute discharge static head ϭ 75 ϩ 34 ϭ 10 9 ft (33.2 m), whereas the absolute suction head ϭ 10 ϩ 1. 13 ϭ 11 .13 ft (3.39 ... TWO PUMPS Paralleled FIGURE 4 Single- and dual-parallel pump characteristic curves. 25 20 15 10 5 0 9.0 7.5 6.0 4.5 3.0 1. 5 0 5 010 L/s FEET OF HEAD Head, m 0 20 40 60 8...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P8 doc
... 4 2.674 4/6 0 .13 99 8/ 6 1. 933 6/8 0.267 10 / 8 1. 726 8 /10 0.335 12 / 10 1. 542 10 /12 0.4 21 When computing such a listing, the actual inside diameter of the pipe, taken from a table of pipe properties, ... procedure, SN ϭ 10 00 P i /S. From this pipe, SN ϭ 10 00(900) /12 ,500 ϭ 72. Since piping is normally fabricated for schedule numbers 10 , 20, 30, 40, 60, 80,...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P9 pdf
... single-stage pump, Fig. 17 a shows that F ϭ 10 .8 for a pressure of 0 .10 torr (1. 5 kPa). Assuming a pump displacement of 10 00 ft 3 /min (0.5 m 3 /s), t ϭ 12 ,000 (10 .8)/ 10 00 ϭ 12 9.6 min, say 13 0 min. For a ... gives h fg ϭ 14 4 (14 .7) (1 Ϫ {40 .1/ [40 .1 ϩ (2 2 )(9.56 Ϫ h fg )] }1. 4)/ (60.33 ϫ 32.0/ 32 .17 4) Downloaded from Digital Engineering Library @ McGra...
Ngày tải lên: 17/12/2013, 11:15