D0 kW. The diversity factor of the load at the station is 1.5 and Calculate the maximum demand on the station and annual ener 12
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- For the circuit element of Problem 2.3, calculate (a) the instantaneous power absorbed, (b) the real power (state whether it is delivered or absorbed). (c) the reactive power (state whether delivered or absorbed). (d) the power factor (state whether lagging or leading). [Note: By convention the power factor cos() is positive. If | | is greater than 90, then the reference direction for current may be reversed, resulting in a positive value of cos() ].Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in Figure 2.27. (a) Obtain expressions for P12 and Q12. (b) Determine the maximum power transfer and the condition for it toA hydroelectric plant has a reservoir area 28.5 x 10^5 sq. meters and of capacity 5 million cubic meters. The net head of water at the turbine is 60 m. If the efficiencies of turbine and generator are 85% and 95% respectively, calculate the total energy in kWh that can be generated from this station. If a load of 25,000 kW has been supplied for 6 hours, find the fall in reservoir.
- 2. Given a biomass fuel cell powerplant which has power capacity of 600 kW, and assume it generates at 83% of full power for 40 hours per week, 50 weeks per year. If the installation of the powerplant costs $10 million, and yearly operating costs are $100k, but it saves $400k per year in waste disposal costs, how many years before the powerplant pays back the installation cost? Use the average industrial electricity rate found at https://www.electricitylocal.com/states/california/oxnard/ (Q 03: Briefly discuss, how the energy consumptions for operations of a fork lifter could be justified. Suppose that a fork lifter has a total energy consumption of 150 W.Hr. The total trips of the vehicle are 375. How the battery duty cycle may be calculated in this case?Your company is considering the installation of a 2 MW wind turbine with a rotor diameter of 90 m in a location with average wind v = 8.5 m/s. The turbine has a cut-in velocity of 5 m/s and a cut-out velocity of 25 m/s. The capacity factor is 0.45. The installed cost of the turbine is $3,500,000. Operating expenses are $225,000 per year. The system has a power coefficient (electric power generated divided by wind power) of 0.45. What price would you have to get for the electricity you produce to obtain a 10% return on the plant investment assuming a project lifetime of 20 years? Use the tables for the cumulative wind power distribution in the notes on wind probability to answer this question. Assume an air density of 1.225 kg/m3.
- An industrial assembly hall is continuously lightedby one hundred 40-W mercury vapor lamps suppliedby a 120-V and 60-Hz source with a power factor of0.65. Due to the low power factor, a 25 percent penaltyis applied at billing. If the average price of 1 kWh is$0.01 and the capacitor’s average price is $50 permillifarad, compute after how many days of operationthe penalty billing covers the price of the power factorcorrection capacitor. (To avoid penalty, the powerfactor must be greater than 0.85.)2) The net inlet to a factory powered by a 2300 volt infinite busis measured as 765 A, for a lag 0.92 power factor. although mostloads is inductive, the input power factor has been improved by installing asynchronous capacitor operating at its nominal value of 1000 KVA. Determine the factor oforiginal factory power.Consider a Pumped storage micro-hydel plant is to be built as a Peak load-plant on above mentioned Nathiya-Galli Water Fall with available head of 39 m and average discharge of 5640 m³/hour from the upper pound. The hydraulic efficiency and electrical efficiency of the plant to be 0.86 & 0.92 respectively. Analyze the following output from the above Pumped Storage Plant: a. Hydro-Power and Annual Hydro-energy available b. Electrical Power and annual electrical energy units that can be generated from the plant.
- A power station supplies the following loads to various consumers: Industrial consumer = 1500kW Commercial establishment = 750kW Domestic power = 100kW Domestic light = 450kW If the maximum demand on the station is 2500kW and the number of KWh generated per year is 45x105. Determine the diversity factor The annual load factorq13/ choose the correct answer The variation of the load is considered over a period of one year in an annual load curve. Select one: True FalseA 3000 kW diesel station supplies the following loads to various consumers : Industrial consumer = 1500 kW Commercial establishment = 700 kW Domestic power = 120 kW Domestic light = 480 kW If the maximum demand on the station is 2600 kW and the number of kWh generated per year is 40 ×105. Determine: (i) Diversity factor . (ii) Annual load factor. (iii) Reserve capacity of the station.