Thermal power station of 5MW • has plant capacity factor of 0.7; Calorife Value of fuel is 8500 kcal "The efficiens of station is 40%; kg Find The Total Fuel Consumption in Tons unit for 12 days. Tag
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- A base load station having a capacity of 18 MW and a standby station having a capacity of 20 MW shares a common load. Determine the annual load factors and plant capacity factors of two power stations from the following data:Annual standby station output = 7·35 × 10^6 kWhAnnual base load station output = 101·35 × 10^6 kWhPeak load on standby station = 12 MWHours of use by standby station/year = 2168 hoursA 20 kW electric roof top A/C unit (RTU) is 10 years old, and has a COP of 2.0 . It operates at full load for 3,000 hours a year. The electric cost is $0.10 per kWh. If this to unit to be replaced with a new 20 kw, what is the minimum value of COP for the ?new unit to reach an annual savings of $1,500 3.5 4.0 4.5 Can not be determinedSECTION B-Choose any TWO (2) Questions from this Section Question 1 [25 Marks] (a) A commercial building has a power demand of 50 kW at a power factor of 85%. Determine (i) (ii) The annual penalty if the utility's minimum power factor is 95% and the cost of power is P10/kW/month (9) P The cost of capacitor, which when connected in parallel to the load will improve the power factor to 100%. (Assume the purchasing cost of capacitor is P30/kVAR) (10) (b) A 3-phase, 10 kVA load has a power factor of 0.342. The power is measured by two wattmeter method. Find the reading of each wattmeter. Q w Var Va = 10€ Va >= 10kVA pl: 0.36 2 (= Isine 5 3149 Question 2 [25 Marks] (a) A single-phase motor takes apparent power of 1909 VA at a power factor of 0.866 lagging when con- nected to a 230 V, 50 Hz supply. (i) Calculate current drawn from the supply (ii) (b) Draw a fully labelled equivalent circuit of a transformer Two similar capacitors are then connected in parallel with each other to form a…
- I need the correct expert solutionProblem Statement: For a 50MW power plant, with a cycle efficiency of 44% do we lock in a long-term fuel rate? Assume electricity retails for $25 MWh, the plant operates for 20 years, and a discount rate of 5%. Option 1: Buy energy on the market Option 2: Futures contract rate of $4 per mmBTU Price Year (S/mmBTU) 2019-2023 3.0 2024-2028 4.0 2029-2033 6.0 2034-2038 3.0Refer to this Figure 1. Determine the minimum value of IBthat will produce saturation.
- Two generating units have the following characteristics: Unit 1 (Gas): H,(P,) = 100 + 4*P, + 0.002*P,2 50 MW < P, < 500 MW Unit 2 (Coal): H2(P2) = 300 + 6*P2 + 0.0025*P22 50 MW < P2 < 400 MW The fuel costs for the units are as follows: Gas: 0.6 $/MBtu The coal costs 14 $/ton and has an average heat content 12500 Btu/lb (1 ton = 2000 lb) Unit 2 is on a take-or-pay supply contract and must burn 500 tons of coal during the 8-h time period. Assume both units are on-line and they should meet the following load: Period Duration Load (MW) 1 4 hours 400 4 hours 650 For a starting value of y = 12 $/ton, In iteration 1, the coal consumption of unit 2 during time period 2 is equal to: Select one: O a. 368.48 tons O b. 352 tons O c. 284.25 tons O d. None of these Clear my choice9. A central station is supplying energy to a community through two substations. Each substation feeds four feeders. The maximum daily recorded demands are : POWER STATION. 12,000 KW Substation A . 600 kW Sub-station B .. 9000 kW 1700 kW 1800 kW Feeder 1.. Feeder 2 . Feeder 3. Feeder 1 . 2820 kW Feeder 2. 1500 kW Feeder 3 2800 kW - 4000 kW Feeder 4 600 kW Feeder 4 2900 kW Calculate the diversity factor between (f) substations (ii) feeders on substation A and (ii) feeders on sub- station B. |() 1-25 (i) 1-15 (ii) 1-24]12. In a 100 MW steam power station working at 60% load factor the energy cost is found to be 1.5 baize Per unit. Calculate (i) the cost of energy/kWh if the power station loaf factor is improved to 70%.Due to increase energy generation the fuel cost increases the annual generation cost by 6%.
- 9. A central station is supplying energy to a community through two substations. Each substation feeds four feeders. The maximum daily recorded demands are: POWER STATION. 12,000 KW Sub-station B.. 9000 kW . 2820 kW 1500 kW 4000 kW 2900 kW Substation A 6000 kW .1700 kW 1800 kW Feeder 1 Feeder 1 Feeder 2. Feeder 3. Feeder 4. Feeder 2. Feeder 3. Feeder 4. 2800 kW 600 kW Calculate the diversity factor between (1) substations (if) feeders on substation A and (ii) feeders on sub- station B. |) 1-25 () 1-15 (il) 1-24]Solve A B c and d1) The incremental fuel costs, in dollars per mega watt hour for two units in a plant are given by : dF dpi = 0,007 P₁ + 7 and df₂ dP₂ = 0,009²₂ +6 24 hour period the load each unit varies between During loo Mw and 500 MW, Whereas the plant output varies from 200 MW to 700 MW. a) At what power level should unit 2 begin to take on all the additional load for the most economic operation of the plant? Select one: O a: 222, 22 MW O b: 122, 22 MW OC: 122, 22 MW Od. 222, 22 MW b) What is the power output of the plant at this point ? Neglect losses. b: 122, 22 Kw b: 222, 22 MW b: 222, 22 b: 122, 22M W on KW