If you are the engineer or consultant of a company and the owner ask your opinion to what type of power plant the company would invest that would yield higher ROI (Return of Investment) & why?
Q: 1) Find the equivalent spring, N/mm 2) Find the force, F Kl: =7 K5. =11 k K2 =8 X=10 mm К3 -9 K4 =10...
A: GIVEN DATA - A SPRING SYSTEM GIVEN WE HAVE TO FIND BOTH POINT 1 & 2
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A: Given data : The value of mass =m=30 g The value of volume=V=7 cm3 Required : Density
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Q: Find the longitudinal stress in the tank.
A: To Find the longitudinal stress.
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Q: A HP absorbs 10kW of heat from outside environment at 260K while absorbing 18kW of work. It delivers...
A: Given data: QL˙=10 kWW˙=18 kWTL=260 KTH=300 K Need to determine the COP of heat pump.
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Q: (Problem 3.67 from the text book) Determine the maximum shearing stress in a solid shaft of 18-mm di...
A: Given data: d=18 mmP=3.4 kW Need to determine the shear stress in the shaft.
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Q: Water enters a pump through a 250mm diameter pipe at 35 kPa. It leaves the pump at 140 kPa through a...
A: GIVEN DATA- Flow rate Q=150 L/s d1=250mm d2=150mm P1=35KPa P2=140KPa WE HAVE TO CALCULATE VELOCITY A...
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Q: a (m/s²) В 24 A 12 t (s) 30 60
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Q: 1. Perform the indicated operation: a. 2{– 4 – [6 + 3 + (7 –(1 + 8)) + 12] – 3} + 5 b. –5{- [- 2 + 6...
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Q: If a eutectoid steel sample is heated to 800°C and then quenched in a cold-water bath then what woul...
A: all the details are mentioned in the diagram below.
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A: NOTE:- As per our company guidelines we are supposed to answer only one question. Kindly repost othe...
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Q: e resultant of forces
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Q: Determine the maximum torque of the tube shown if the allowable shearing stress is 46 Mpa. Given: t ...
A: GIVEN DATA- A HEXAGONAL TUBE IS GIVEN a=33mm t=2.73mm shear stress =46MPa WE HAVE TO FIND TORQUE
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- A) With a neat sketch discuss the working of a Grid-connected system for power generation and explain the functions of important components of this system?A family wishes to buy a 2020 Toyota Camry. The two options the consider are (a) a standard automobile with and SI engine that gets 34 mpg and costs $18,000; and (b) a hybrid automobile that gets 52 mpg and costs $32,000. On average, the family drives 16,000 miles each year ad gasoline costs $1.65 per gallon. Calculate: (Show your clear solution) The amount of gasoline each vehicle would use each year. Gasoline cost savings of hybrid over standard. Time in months it would take to make up the difference in vehicle cost with fuel savings.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%
- Consider the percentageshares of World Population, GDP, andCommercial Energy Use for somemajor countries(US, Europe, India, China) in 2011. Howdo you think the situation willlook like in a future (say 2050) more sustainable world? Write 1-2 paragraphs discussing and explaining your positions.Suppose you have two kettles – a plug-in electric kettle and a stovetop kettle. The electric kettle uses electricity from a natural gas fired powerplant, while you boil water in your stovetop kettle on a natural gas burner. a) Based on the following information, which of these kettles demonstrates a higher energy efficiency (i.e., which is more efficient at using energy from fuel to heat water)? Please calculate the efficiencies of each kettle and express answers as percentages. -The natural gas power plant converts chemical energy of the natural gas to electricalenergy with 58% efficiency. -High-voltage power lines from the power plant to your house convey electricity with92% efficiency. -The electric kettle converts electrical energy to thermal energy in the water with 85%efficiency (the other 15% heats up the kettle itself). -The stove burner converts chemical energy of natural gas to thermal energy with 98%efficiency (the other 2% is light). -The stovetop kettle transfers 35% of…Draw the schematic diagram of the problem; The steam used by a turbine is 5.50 kg/kw-hr at a pressure of 4.50 MPaa and a temperature of 373 degree Centigrade. The overall boiler effeciency is 85% with feedwater temperature at 165 degree Centigrade. a) How many kilogram of coal are required per kw-hr if calorific value of coal is 28,000 kJ/kg? b) If coal costs Php 440 per Metric Ton, what is the fuel cost per kw-hr? Copy the problem.
- A mining pit about 5000ft below sea level was flooding as a result of heavy down pour. The situation is such that if quick and drastic measures are not taken severe damage could be cause to lives and properties. As the pit superintendent (mining engineer) a) What kind of pump is suitable for this kind of operation and why? In a power plant, the steam from the boiler reaches the turbines at a temperature of 700oC. The spent steam leaves the turbine at 100oC. b) Calculate the maximum efficiency of the turbine As the project consultant for Green court engineering consults, you have been contracted by Total power development authority to present a detailed proposal on an intended project to explore an additional generation units to increase capacity. (c) In your capacity as the project engineer, why is the project necessary?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)1. Make a control volume around the whole power plant in Fig. 1.1 and list the flows of mass and energy in or out and any storage of energy. Make sure you know what is inside and what is outside your chosen control volume. FIGURE 1.1 A power tation in Febjeg. Denmark. Courtesy of Dang Enargy AS, Denmarik
- If we wanted to supply all the electricity needs for New York City (NYC), with a popula- tion of about 10 million people, using photovoltaics technology, how much land area would we need? What other elements would be required for such an idea to work for NYC? How large of an investment would this involve, and how would the price of electricity in ¢ per kWeh have to increase in order to recover that investment in 10 years at an interest rate of 8%? For comparison, the average New Yorker paid 12¢/kWeh in 2002.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: a) Mass flow rate (lb m/s ), b) power to drive compressor (HP), c)Net power output, d.) thermal efficiency, e) mean effective pressure (psia)Question # 1 a) How engineering thermodynamic differs from statistical thermodynamic b) Explain what you understand by thermodynamic equilibrium? c) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? Explain.