75% (about 6574 hours f $0.0054 per kWh
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- b) Determine the energy transport rate for the system shown in Figure below. Fuel flow Top heat loss Exhaust flow Epuet15,000 Btu/min Eethaut500, Btu/min 180,000 Btu/h System boundary Engine-generator set 200. hp Bottom heat loss 54,000 Btu/h 50.0 hp Electrical workoutWind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: P = pAv³C₁. . (Equation 1) where p is the air density (kg/m³), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). Cp is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data: Blade length /= 50 m Air density p= 1.5 kg/m³ Power…A.) A power plant is said to have a plant use factor of 48.5% and a plant capacity factor of 42.4%. How many hours did it operate during the whole year? B.)A central station has annual factors as follows; Load Factor 58.5%; Plant Capacity factor 40.9%; Plant Use Factor 45.2%. The reserve carried over and above the peak load is 8900kW. Find annual energy production in kW-hr
- 1- During a steam generator performance test, the following data were taken: Fuel data: Type=Coal Mass flow rate=2.5 kg/s High heat value=32.5 Mj/kg Steam data: Pressure=13 bar Dryness fraction=99.5% Mass flow rate=25 kg/s Feed water data: Saturated at 50 C° Calculate the steam generator efficiency.An engineer was tasked with evaluating a heat and power generation unit for an aluminium smelting plant. The management intends to expand the production facilities to meet growing demand for aluminium. The plan involves increasing the energy intensive smelting line from the present single line to three lines by end of 2022. To support the expansion plan, the company plans to install a self-sufficient power generation unit. Details of the energy requirement and the proposed power generation unit is given the following Table. Item Power requirement per smelting processing line 0.6 MW Proposed power generation unit: Supplier • System Description Mitsubishi Heavy Industries Ltd Steam power plant (Carnot heat engines principles) 35% • Overall thermal efficiency Prepare a mini technical power evaluation report for the above project. Your report should include the following items and in the following order: a. Total power (W) and heat (Q) requirement.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the surrounding air from the steam as it passes through the pipes and other components are estimated to be about 8 GJ/h. The waste heat is transferred to the cooling water at a rate of 170 GJ/h. Problem 06.017.a - Net power output of steam power plant Determine the net power output. (You must provide an answer before moving to the next part.) The net power output is MW.
- In an absorption refrigerator, the energy driving the process is sllPplied not as work, but as heat from a gas flame. (Such refrigerators commonly use propane as fuel, and are used in locations where electricity is unavailable. *) Let us define the following symbols, all taken to be positive by definition: Qf = heat input from flame Qe = heat extracted from inside refrigerator Qr = waste heat expelled to room Tf = temperature of flame Te temperature inside refrigerator Tr = room temperature Use the second law of thermodynamics to derive an upper limit on the COP, in terms of the temperatures Tf, Te, and Tr alone.In an absorption refrigerator, the energy driving the process is sllPplied not as work, but as heat from a gas flame. (Such refrigerators commonly use propane as fuel, and are used in locations where electricity is unavailable. *) Let us define the following symbols, all taken to be positive by definition: Qf = heat input from flame Qe = heat extracted from inside refrigerator Qr = waste heat expelled to room Tf = temperature of flame Te temperature inside refrigerator Tr = room temperature Explain why the "coefficient of performance" (COP) for an absorption refrigerator should be defined as Qc/Qf.1.5. A refrigerator is used to cool 4 litres of soft drink from room temperature (25 °C) to 3 °C. If the density of the soft drink is 1015 kg/m3 (1 litre = 0.001 m³), how much heat must be removed if the specific heat of the soft drink is 4350 J/kg °C. 1.6. An engine operating in a cycle absorbs 5000 cal of the heat from a heat source and performs 2000 cal of work. Calculate: (a) The amount of heat discarded in this cycle (b) The efficiency of the engine
- A Thermal power plant rated capacity of 12,530 MW operates 11 hrs per day. If the actual energy generated is 42% higher than of that rated capacity, What is the plant capacity factor? 13% B 15% C) 17% 21%Write legibly so i can understand 3. The turbine section of a Brayton cycle gas turbine receives hot compressed air at 150 psia and 2100 o R, expands it to 15 psia and develops a gross output of 15,000 HP. Air enters the compressor at 500 R. Determine: d.) thermal efficiency, e) mean effective pressure (psia)Tutorial 01: From your previous study of thermodynamics and general knowledge define the following terms: 1. Energy 2. First law of Thermodynamics 3. Law of Conservation of Energy 4. Carnot Cycle 5. Closed system 6. Internal Energy 7. Second law of Thermodynamics 8. Rankine Cycle 9. Power Plant 10. Types of Energy 11. Turbine 12. Cooling Tower 13. Condenser 14. Evaporator 15. Saturation Temperature 16. Saturated Vapor 17. Super-heated Vapor 18. Degree of super-heated