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C O O n t e n t Explore some of the projects described by William McDonough (Liuzhou City, Ford River Rouge Truck Plant green roof, Gap San Bruno office, etc). • What became of them? Consider the gap between ambition and reality when it comes to sustainability and sustainable energy generation. Discuss how this gap relates to the perspectives given in the other TED talks as ● well. Do you agree with the presenters' perspectives on the future? • What sustainability factors are they considering (or not) in their assessment of the future?

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View Policies Current Attempt in Progress A High-Performance Engine. You and your team are tasked with evaluating the parameters of a high-performance engine. The engine compresses the fuel-air mixture in the cylinder to make it ignite rather than igniting it with a spark plug (this is how diesel engines operate). You are given the compression ratio for the cylinders in the engine, which is the ratio of the initial volume of the cylinder (before the piston compresses the gas) to the final volume of the cylinder (after the gas is compressed): VV, Assume that the fuel-gas mixture enters the cylinder at a temperature of 26.0 °C, and that the gas behaves like an ideal gas with y-7/5. (a) If the compression ratio is 14.9:1, what is the final temperature of the gas if the compression is adiabatic? (b) With everything else the same as in (a). what is the final temperature of the gas if the compression ratio is increased to 16.117 (c) Everything else being the same, for which compression ratio…

What questions would you ask about this project and the analysis of tabless batteries and upcoming work?

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University of Basrah - College of Engineering Department of Mechanical Engineering Subject: Power Plant I Class: Fourth Examiner: Dr. Ahmad A. M Alsahlani Notes: Giving Sketches is compulsory wherever needed (Total Ma Q1] Answer the following que Exam: Final-Exam Date: 11/09/2023 Time: 2 Hours 1- Explain how the Geothermal Energy can be utilized to generate electricity. 2- State the two classifications of energy sources and give three examples for each. 3- State three advantages and three disadvantages of using Gas Turbine Power Plant. 4- What are the reasons that lead to a deviation in the ideal gas turbine cycle? 5- Draw a block diagram for a regenerative Rankin Cycle using one open feed water heater. Q2] A closed cycle gas-turbine power plant has a pressure ratio of 10. The air temperature is 35 C at the compressor inlet and 1127 C at the turbine inlet. The received energy at the Qi combustion chamber is 794 kJ/kg. Assume the isentropic efficiency of the turbine is 95%. Determine…

Q1: What are the advantages and challenges of renewable energy resources? Q2: Discuss potential sources and uses of biomass as an energy source.

5) One type of PV module consists of 72 cells and the size of each cell is 0.125 m x 0.125 m. The electricity conversion efficiency of the module under standard test conditions is 14%. Reference Temperature (Tr) =25°C (i) A shopping centre open 24 hours a day and 365 days a year is artificially lit continuously by 200 (number of the bulbs) 15W ( power of each bulb) compact fluorescent light bulbs. Determine the annual energy generation (kWh) required from a photovoltaic system to meet the annual demand for the lighting.? (ii) Estimate the power output of one module and the number of modules required to generate total lighting power of this shopping centre at 962 W/m2 insolation and 60°C cell temperature, assuming that the temperature coefficient of the module power is 0.5%/°C;

Please explain how part b is broken down and the result

9.1 We want to get an idea of the actual mass of 235U involved in powering a nuclear power plant. Assume that a single fission event releases 200 MeV of thermal energy. A 1,000 MW, electric power plant has a thermal power of approximately 3,000 MWh- a. What rate of fission reactions is required to produce this power? (Note: 1 eV = 1.6 x 10-¹9 J.) b. The reactor core consists of approximately 100 tonnes of UO₂ (1 tonne = 1,000 kg), which is enriched in 2U to 4%. How many full-power years could the reactor operate if all of the 235U were to be fissioned? What factors prevent such complete depletion of the 25U from occurring? C. Under the 2U depletion scenario of part b, what mass of fission products and what mass of high-level wastes (HLW) would be produced?

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Which of the following formulas describe the thermal efficiency of a cycle? Select all that applies.     1 - qin/qout     worknet/qout     worknet/qin     1 - qout/qin

3. Laws on Conservation. Using the energy model sketched below plus concepts of energy conservation, consider the impact of a dirty war on the global energy. To start, assume that the impact of this war has created an atmosphere that absorbs 75% of the incoming sunlight, while the albedo is reduced to nearly 20%. Let's assume that Earth's ability to reflect incoming solar radiation is negligible. The Earth's surface radiates 240 W/m2, all of which is absorbed by the atmosphere. Assuming that Earth can be modeled as a blackbody emitter and incoming/outgoing energy as shown in the schematic, find the following quantities: a) The "nuclear winter" temperature [°C] of the surface of the Earth b) X, the rate [W/m²] at which radiation is emitted from the atmosphere to space c) Y, the rate [W/m²] of absorption of short-wavelength solar radiation at the Earth's surface d) Z, the rate [W/m2] at which the atmosphere radiates energy to the Earth's surface Incoming 342 W/m² Reflected to space X…

COMBUSTION ENGINEERING 1. The following details were noted in a test on a single-cylinder four-stroke oil engine: bore = 150 mm; stroke = 160 mm; speed of engine = 500 rpm; fuel consumption = 0.0475 kg/min; calorific value of fuel = 42,000 kJ/kg; the difference in tension on either side of the brake pulley = 400 N; brake circumference = 2.2 m; length of the indicator diagram = 50 mm; area of positive loop of indicator diagram = 475 mm²; area of negative loop = 25 mm?; spring constant = 0.8333 bar per mm. Calculate: d) The Brake thermal efficiency, in percent kg e) The Brake Specific Fuel Consumption, bkW-hr

COMBUSTION ENGINEERING 1. The following details were noted in a test on a single-cylinder four-stroke oil engine: bore = 150 mm; stroke = 160 mm; speed of engine = 500 rpm; fuel consumption = 0.0475 kg/min; calorific value of fuel = 42,000 kJ/kg; the difference in tension on either side of the brake pulley = 400 N; brake circumference = 2.2 m; length of the indicator diagram = 50 mm; area of positive loop of indicator diagram = 475 mm2; area of negative loop = 25 mm?; spring constant = 0.8333 bar per mm. Calculate: a) The Brake Power in kW b) The Indicated power in kW c) The mechanical efficiency d) The Brake thermal efficiency, in percent kg e) The Brake Specific Fuel Consumption, bkW hr

1.19) A thermodynamic cycle involves the following 4 processes. Draw the cycle on a single PT diagram. (a) An isobaric heating from 500 K and 400 kPa to a temperature of 700 K (b) An isothermal compression to a pressure of 800 kPa (c) An isobaric cooling to a temperature of 500 K (d) An appropriate isothermal expansion to close the cycle Note: The chart should be drawn to scale, neatly accurately. Use a ruler and label your axis.

Shown in the table are the cash flows for 4 water treatment systems that are to be compared at a MARR of 11% per year. Determine the savings between the alternative to be selected and the next one. Shown in the table are the cash flows for 4 water treatment systems that are to be compared at a MARR of 11% per year. Determine the savings between the alternative to be selected and the next one. Life n, years Capital Investment, $ Salvage Value, S Revenue, S 4 6 12 150,000 175,000 250,000 450,000 15,000 5,000 30,500 60,000 60,500 65,000 75,000

b) For an Otto Engine the temperature at the end of combustion is 280 K. If the temperature in the gas side and coolant side of the wall are 177 °C and 127 °C and cylinder wall thickness is 5 mm;

2.A renewable energy project developer is beginning a new project. List and describe a selection of relevant issues which could influence the project, that the developer needs to consider.

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint: think dashed lines!), use labeled arrows to identify each individual input and output of "stuff". (e)…

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (a) Identify the system (in words). (b) Identify the "stuff" you are accounting for in this analysis. (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint:…

39 - A fixed volume insulated tank, which was initially empty, was connected by a valve to a distribution line carrying helium gas at a temperature of 125ºC. The valve is opened first and closed when the pressure is the same as the distribution line pressure. What is the final internal energy of helium in the tank? (Internal energy of the warehouse in the final state = Enthalpy of the distribution line). (Cp=5.1926) will be taken.      a) 2066.7 kJ/kg  B) 2014.7 kJ/kg  NS) 701.0 kJ/kg  D) 649.1 kJ/kg  TO) 2118.6 kJ/kg

ASSIGNMENT Issue Date: 14.12.2020 Date of submission: 21.12.2020 1. a) In a certain process, 675 J of heat is absorbed by a system while 290 J of work is done on the system. What is the change in internal energy for the process? Determine also the net work done and change in internal energy if the processes are assumed to be

1) a) On a sketch illustrate natural gas fired power plant generating and delivering electricity to an end user. At a minimum illustrate the following components: i) Boiler ii) Transformer iii) Generator iv) Turbine v) Condenser Given that the overall efficiency of the above natural gas fired power plant to customer using electricity is 37% illustrate on the above sketch, where the losses occur and the approximate scale of the different losses?   b) Draw the corresponding Sankey diagram for the above assuming 100 units of input natural gas energy

5. Stress-strain calculation, heat transfer, and dynamic simulation are forms of: * Productivity efficiency Engineering analysis Documentation Data base optimization

I want to briefly summarize what he is talking about and what you conclude. pls very urgent

12. PLEASE ANSWER ASAP

7. In the summer it tends to become quite hot and humid in the Guelph area. Many home owners purchase dehumidifiers to remove moisture from the air. Excessive moisture can create problems with dampness in basements, so it is a good idea to keep the situation under control, Dehumidifiers work on the principle that when air is cooled, its ability to hold moisture decreases Therefore, the dehumidifier consists of a cabinet-like structure containing a refrigeration coll. As the room air blows over this coil. it is cooled to a temperature that is below its dew point. Moisture then condenses out of the air and is collected in a bucket (or directed by a hose to a floor drain), A curious home owner wonders how much water will be collected in a 12 hour period. He empties the bucket at the start of the test and comes back exactly twelve hours later to see how much water has been collected. Calculate the amount of water that would be collected in a twelve-hour period if 1.15 cubic metres per…

Here questions and answers both are available I need your handwriting and also please don't copy and paste chegg answers

Q2/A: What are the technologies that promote the sustainable energy?

17.  I need the Equations for the nozzle of gas turbine engine of an airplane. (Balance of energy and mass) everything

1. Compared to gasoline, hydrogen has (A) higher energy density per unit volume and per unit mass (B) higher energy density per unit volume but lower energy density per unit mass density per unit mass (C) lower energy density per unit volume but higher energy (D) lower energy density per unit volume and per unit mass 2. A new hydroelectric power plant proposed for the Mississippi River near St. Louis is advertised as "delivering 438,000 megawatt-hours of renewable electricity to the region annually". What is the average power output of the plant? (A) 50 MW (B) 1.2 GW (C) 438 GW (D) 438 MW 3. A car accelerates from 0 to 60 miles/hour in 6 seconds. What is a good estimate of the power output of the engine? (A) the mass of the car divided by 60 miles (B) the chemical energy of the gasoline consumed during the acceleration (C) the thermal energy produced by the engine during the acceleration (D) the final kinetic energy of the car divided by 6 seconds

Why Blade Numbers are essential and needed to be considered in establishing the design of a wind energy conversion system (WECS) please answer at your own words and make it long essay if you can. Thank you so much!