Engineers' Handy-book: Containing Facts, Formulæ, Tables, and Questions on Power, Its Generation, Transmission and Measurement ... Together with a Discussion of the Fundamental Experiments in Electricity ...

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D. McKay, 1907 - 844 σελίδες

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Περιεχόμενα

Compound Compressor
56
Flow of Compressed Air Through Small Pipes
62
Efficiency of Electric Power Transmission
68
Oil Filters
74
Measurement of Power Required for Vehicles
80
Dynamical Theory of Heat
86
Melting Points of Solids
92
COMBUSTION AND FUELS
98
30 31
106
AIR AND OTHER GASES
112
Table of Atmospheric Pressures Corresponding to Different Altitudes
118
Force of Wind of Different Velocities
124
Boiling Point of Fresh Water
133
Rules for Computing Capacity
139
STEAM
146
Total Heat of Steam
159
HISTORICAL AND DESCRIPTIVE
160
Watertube Boilers 168170
168
Locomotive Boilers 177180
177
35 37
179
Grate and Heating Surface 183187
185
Boiler Materials 192197
192
Water Level
198
Foaming 205
205
Questions on Part III 212215
212
Proportions for Safety Valves
218
Rules and Formulæ for Safety Valves
225
Salinometer
232
Tables of Pressure and Temperature of Water Vapor in the Atmos
244
Table of Maximum and Minimum Deliveries
262
Table of Feedwater Temperatures for Different Steam Pressures
268
Advantages of Heating Feedwater
275
Steam Separators
282
Grates Interlocking Bar
290
Wilkinson Stoker 294298
297
Proportioning Stacks 304307
304
PART V
314
Horsepower of Engines 320323
320
40 41
326
Spikes Nails and Tacks Tables of Weights
329
High and Lowspeed Engines
332
Simple and Multiple Expansion Engines 339346
339
Throttling and Automatic Cutoff Engines 346349
346
Single and Double acting Engines
353
Sources of Waste in the Use of Steam 354
354
Steam Passages
362
Crosshead 368
368
Crank Pin 376
374
The Slide Valve and Its Action 387390
387
How to Set Valves 393395
393
Piston Valve
399
Meyers Valve Gear 407
407
General Principles of Operation
409
Importance of a Good Governor
415
Buckeye Governor 421
421
Invention and Improvement of 495498
495
Tabors Indicator 502504
503
Motion of the Paper Drum 513515
509
Analysis of Indicator Diagrams
515
Diagrams from Automatic Cutoff Engines 521523
521
How to Calculate the Horsepower from a Card 528534
528
Formula for Finding Theoretical Clearance 535536
535
Calculation of Theoretical Water Consumption 562566
562
Table of Pressures and Temperatures in the Condenser
572
Condensers for Marine Engines 577579
579
Injector Condenser 589592
589
PART VII
596
Management of Engines 602608
602
When Gas or Gasoline Engines are Advisable
609
Properties of Metals
613
Table of Sizes of Brick
620
Table of Weights of Castiron Balls
626
Alloys 632
632
Lead Pipe Table of Sizes
638
STRENGTH OF MATERIALS
644
PART IX
657
Electromotive Force
663
Laws of Resistance
665
Electromotive Force Methods of Producing
671
Measurement of Electromotive Force
678
Opencircuit Cells
684
The Dynamo
688
The Field
694
Regulation of Shunt Dynamos
700
Running Generators in Multiple 706710
706
Modified Systems threewire 713
713
Materials Used for Electrical Conductors
719
Tensile Strength of Copper Wire
723
Fuses
729
Thermometer Used as Salinometer
734
Dimmers
735
100 101
739
Distribution of Light 741745
741
Protective Devices
748
Efficiency
754
The Annunciator
760
Telephonic Transmission of Speech Receiver and Transmitter
766
Questions on Part IX 773776
773
CHAPTER XXXVIII
777
Tables of Squares Cubes Square and Cube Roots of Numbers 784798
784
The Ampère Volt Ohm and Watt
787
Use of Letters in Calculation
799
Examples of Use of Tables
803
Tables of Logarithms 808809
808
Table of Circumferences and Areas of Circles 815826
815
Tables of Properties of Steam
821
Weights and Measures 827830
827
INDEX
833
Steam Pipes Table of Equivalent Sizes
843

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Σελίδα 795 - To find the area of a segment of a circle: Find the area of the sector which has the same arc, and also the area of the triangle formed by the chord of the segment and the radii of the sector.
Σελίδα 598 - Therefore, the specific gravity of a solid or a liquid body is the ratio of its weight to the weight of an equal volume of water...
Σελίδα 598 - Specific Gravity of a body is the relation of its weight, compared with the weight of some other body of the same magnitude. A body immersed in a fluid will sink if its specific gravity be greater than that of the fluid; but if it be less, the body will rise to the top, and will be only partly uncovered.
Σελίδα 84 - The capacity of a body for heat is termed its specific heat, and may be defined as the number of units of heat necessary to raise the temperature of 1 Ib. of that body 1° Fah.
Σελίδα 152 - The resistance at the opening, and that at a globe valve, are each about the same as that for a length of pipe equal to 114 diameters divided by a number represented by 1 + (3.
Σελίδα 764 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor. 4. Seek how often the divisor is contained...
Σελίδα 1 - This distinction is wholly artificial, for the same force may act in any of these modes ; it may sometimes be a statical and sometimes an accelerating force. Force is any action which can be expressed simply by weight, and is distinguished by a great variety of terms, such as attraction, repulsion, gravity, pressure, tension, compression, cohesion, adhesion, resistance, inertia, strain, stress, strength, thrust, burden, load, squeeze, pull, push, pinch, punch, etc., all of which may be measured or...
Σελίδα 789 - To find any root of a number, divide the logarithm of the number by the index of the root...
Σελίδα 132 - ... will be increased. The density of water decreases as the temperature increases, since heat destroys cohesion and expands the particles, causing them to occupy greater space. The power of water to hold chemical substances, such as salts of lime, in solution, decreases as the temperature increases ; from this it follows that boilers carrying high-pressure steam form more scale than those working at low temperatures.
Σελίδα 598 - The difference in weight is the weight of an equal bulk of water. Divide the weight in air by the weight of the equal bulk of water and the quotient is the specific gravity.

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