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Handbook of electric power calculations 3rd edition

Handbook of electric power calculations 3rd edition

Handbook of electric power calculations 3rd edition

... wattmetercircuit.PREFACEThe Handbook of Electric Power Calculations provides detailed step-by-step calculationprocedures commonly encountered in electrical engineering. The Handbook contains awide array of topics ... the true power P andthe apparent power S. It can be seen by referring to the power triangles of Fig. 1.30 thatthis ratio is equal to the cosine of the power- factor angle ␪. The power- factor ... inductive (lagging power factor). Thus, power engineers often refer to capacitors or capacitive loads assources of reactive power. POWER- FACTOR CORRECTIONCalculate the value of the capacitor...
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transient analysis of electric power circuits handbook

transient analysis of electric power circuits handbook

... 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 CIRCUITSIn 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 energydissipation. The rate of energy dissipation affects the time interval of ... circuitoffive L /C elements (a) and its equivalent of only two L/C elements (b),a circuit of three L elements (c) and its equivalent of only one L element.Figure 1.11 An ‘‘inductance’’ node of three...
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Handbook of Mechanical Engineering Calculations P1

Handbook of Mechanical Engineering Calculations P1

... to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 1.10 POWER GENERATIONfrom the steam bottoming cycle. For this study, two types of supplementary ... steam-turbine power plants shut offfeedwater heaters to get additional kilowatts out of a turbogenerator during periods of overloaded electricity demand. When more steam flows through the turbine, theelectrical ... 340—the power output of aeroderivative machines increases at littlecost to the power industry. The result is further application of gas turbines fortopping, expansion, cogeneration and a variety of...
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Handbook of Mechanical Engineering Calculations P2

Handbook of Mechanical Engineering Calculations P2

... (0.28 kg) of water per pound (kg) of dry air. Since the watercontent of the air is a function of the partial pressures, (0.622) (0.5067) /[(2ϫ0.5067)]ϭ0.673 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 GENERATIONcold well for the pump suction and suitable valving for control of the incomingwater ... the quantity of steam, lbm/h (kg/h), lost from thecondenser.Calculation Procedure:1. Compute the mass rate of flow per hour of the air leakageThe mass rate of flow per hour of the estimated...
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Tài liệu Handbook of Mechanical Engineering Calculations P3 pdf

Tài liệu Handbook of Mechanical Engineering Calculations P3 pdf

... combustionand 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 theweight 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 (41cu m) per gal of No. 5 fuel oil; 1500 cu ft of air (42.5 cu m) per gal of No. ... of air per lb (8.71 kg/kg) of natural gas, or 19.3584 /22.1ϭ0.875 lb of air per ft3(13.9 kg/ m3) of naturalgas. See step 4 for an explanation of the value 22.1.7. Compute the weight of...
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Tài liệu Handbook of Mechanical Engineering Calculations P4 pptx

Tài liệu Handbook of Mechanical Engineering Calculations P4 pptx

... Mƒϭlb of moisture per lb fuelburned; Maϭlb of moisture per lb of dry air to furnace; Cbϭlb of carbon burnedper lb of fuel burnedϭCϭRCr; Crϭlb of combustible per lb of refuse; ... controlled.Related Calculations. Developing the performance characteristics of eachpiece of equipment as a function of load is the key to determining the mode of operation and loading of each type of steam ... lb of refuse; Rϭlb of refuse per lb of fuel; H2,N2,C,O2,Sϭlb of each element per lb of fuel, asfired; CO2, CO, O2,N2ϭpercentage parts of volumetric analysis of dry combustiongas...
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Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf

Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf

... use is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 5.4 POWER GENERATIONm) are used. Use the Standards of the Bleeder Heater Manufacturers ... an existing power system, net output of the existing system isincreased, as noted, because of increasing flow to the steam turbine’s condenser.This increased output offsets the cost of interconnection ... pressure of 500 psia (3445kPa) and a temperature of 740ЊF (393.3ЊC). A portion of this 500-psia (3445-kPa)steam is used in a closed feedwater heater to increase the temperature of 1,000,000lb...
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Tài liệu Handbook of Mechanical Engineering Calculations P6 pdf

Tài liệu Handbook of Mechanical Engineering Calculations P6 pdf

... engine of this type, the initial step is to determine the horsepowerrequirements 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 GENERATIONTABLE 6Range of Discharge Temperature*5. Compute ... high-speed engines of the same horsepower (kW) rating.The initial cost of a larger engine is greater but more frequent servicing caneasily bring the cost of a smaller engine up to that of the larger...
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Tài liệu Handbook of Mechanical Engineering Calculations P7 docx

Tài liệu Handbook of Mechanical Engineering Calculations P7 docx

... this handbook. Once the required flow rate is determined, apply a suitable factor of safety. Thevalue of this factor of safety can vary from a low of 5 percent of the required flowto 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 the product of the liquid ... Loss7.65SPECIAL PUMP APPLICATIONS7.68Evaluating Use of Water-JetCondensate Pumps to Replace Power- Plant Vertical CondensatePumps7.68Use of Solar-Powered Pumps inIrrigation and Other Services7.83Pump...
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Tài liệu Handbook of Mechanical Engineering Calculations P8 doc

Tài liệu Handbook of Mechanical Engineering Calculations P8 doc

... surges result. Theamplitude 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 thepressure surge with ... factor of 2 for traps installed between aboiler and the end of a steam main; traps at the end of a long steam main or ahead of pressure-regulating or shutoff valves usually have a safety factor of ... ftϩequivalentlength of fittings, ft. Using data from the Hydraulic Institute, Crocker andKing—Piping Handbook, earlier sections of this handbook, or Fig. 4, find theequivalent length of a 90Њ4-in...
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