Handbook of electric power calculations 3rd edition

... wattmeter circuit. PREFACE The Handbook of Electric Power Calculations provides detailed step-by-step calculation procedures commonly encountered in electrical engineering. The Handbook contains a wide array of topics ... the true power P and the apparent power S. It can be seen by referring to the power triangles of Fig. 1.30 that this ratio is equal to the cosine of...

Ngày tải lên: 30/12/2013, 22:13

... methods of steady- state analysis, which will allow us to simplify the classical approach of tran- sient analysis. 1.2 APPEARANCE OF TRANSIENTS IN ELECTRICAL CIRCUITS In the analysis of an electrical ... principle of energy conservation, i.e., the amount of supplied energy is equal to the amount of stored energy plus the energy dissipation. The rate of energy dissipation affect...

Ngày tải lên: 31/12/2013, 22:30

... to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 1.10 POWER GENERATION from the steam bottoming cycle. For this study, two types of supplementary ... steam-turbine power plants shut off feedwater heaters to get additional kilowatts out of a turbogenerator during periods of overloaded electricity demand. When more steam flow...

Ngày tải lên: 09/11/2013, 04:15

... (0.28 kg) of water per pound (kg) of dry air. Since the water content of the air is a function of the partial pressures, (0.622) (0.5067) /[(2 ϫ 0.5067)] ϭ 0.673 lb of water per lb of dry air ... the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 2.28 POWER GENERATION cold well for the pump suction and suitable valving for...

Ngày tải lên: 09/11/2013, 04:15

... 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 ... 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 (41 cu m) per gal of No. 5 fuel oil; 1500 cu ft...

Ngày tải lên: 17/12/2013, 11:15

... 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; ... controlled. Related Calculations. Developing the performance characteristics of each piece of equipment as a function of load is the key to determining the mode of operation...

Ngày tải lên: 17/12/2013, 11:15

... use is subject to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 5.4 POWER GENERATION m) are used. Use the Standards of the Bleeder Heater Manufacturers ... an existing power system, net output of the existing system is increased, as noted, because of increasing flow to the steam turbine’s condenser. This increased output of...

Ngày tải lên: 17/12/2013, 11:15

... engine of this type, the initial step is to determine the horsepower requirements of the driven load. On equipment of entirely new design, it is often difficult to ascertain the amount of power ... reserved. Any use is subject to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 6.20 POWER GENERATION TABLE 6 Range of Discha...

Ngày tải lên: 17/12/2013, 11:15

... this handbook. Once the required flow rate is determined, apply a suitable factor of safety. The value of this factor of safety can vary from a low of 5 percent of the required flow to a high of ... in ft (m) of water. To determine the pipe friction, use Fig. 30 of this section and Table 17 and Fig. 6 of the Piping section of this handbook in the following manner. Find t...

Ngày tải lên: 17/12/2013, 11:15

... surges result. The amplitude 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 the pressure surge with ... factor of 2 for traps installed between a boiler and the end of a steam main; traps at the end of a long steam main or ahead of pressure-regulating or shutoff valves usua...

Ngày tải lên: 17/12/2013, 11:15