Global Consumption (2016) CO2 350 kg/MWh 260 kg/MWh 200 kg/MWh Type of Fuel Coal 44 billion MWh Oil 51 billion MWh Natural Gas 37 billion MWh Table 1: Global fossil fuel consumption, 2016 4. Globally, fossil fuel energy use was about 132 billion megawatt-hours (MWh) in 2016. Table 1 shows the individual estimates for coal, oil, and natural gas, as well as the carbon intensity of each fuel, given in kilograms of CO2 per MWh of energy consumed. For example, each MWh of coal that is burned releases about 350 kg of CO2. Use the table to estimate the total amount of CO2 (in kilograms, kg) that was emitted in 2016 from the burning of fossil fuels. Start by estimating the amount emitted for each fuel type. Then find the total. You may find it beneficial to use scientific notation. For example 44 billion MWh is 44 × 10° MWh (or 44E9, as entered into your calculator). Round to two significant digits in your final answer.

Global Consumption (2016) CO2 350 kg/MWh 260 kg/MWh 200 kg/MWh Type of Fuel Coal 44 billion MWh Oil 51 billion MWh Natural Gas 37 billion MWh Table 1: Global fossil fuel consumption, 2016 4. Globally, fossil fuel energy use was about 132 billion megawatt-hours (MWh) in 2016. Table 1 shows the individual estimates for coal, oil, and natural gas, as well as the carbon intensity of each fuel, given in kilograms of CO2 per MWh of energy consumed. For example, each MWh of coal that is burned releases about 350 kg of CO2. Use the table to estimate the total amount of CO2 (in kilograms, kg) that was emitted in 2016 from the burning of fossil fuels. Start by estimating the amount emitted for each fuel type. Then find the total. You may find it beneficial to use scientific notation. For example 44 billion MWh is 44 × 10° MWh (or 44E9, as entered into your calculator). Round to two significant digits in your final answer.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.12P

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Suppose we got the following data during a test of a 2- stroke engine in which gas is usedas a fuel:Diameter of the piston = 149 mmStroke length = 179 mmClearance volume = 0.88 literrpm of the engine = 302Indicated mean effective pressure = 6.0 barGas consumption = 6.0 m3/hCalorific value of the gas (fuel) = 16990 kJ/m3Make a clear sketch the geometry of this engine using the data and determine thefollowing:i. Indicated power developed by the engine in watt.ii. Air Standard Efficiencyiii. Indicated thermal efficiency of the engine.
#01: Explain the following terms in your own words. a) Aerodynamics. b) Mach Number. c) Sub-Sonic. d) Angle of Attack. e) Thrust. f) Chord Line. g) Drag Coefficient. h) Pitch Moment. i) Wind Tunnel. j) Skin Drag.
The horizontal force due to water acting on the bolt (Fh): Fh=ρ×A1×V1×V1--V2 Fh=1000×π4×0.0752×1.254×1.254+11.286( Fh)=69.472 This is the only part I did not understand how to get. Can you please explain more? I arrived with this equation, -P1A1 - P2A2 (cancelled since atmos. Pres.) +Fh = rho A1v1 (v2-v1) Why did P1A1 disappear in your solution? How did you come up with (v1 - - v2) ? What is the control volume? Why did you not do a summation of forces is equal to change in momentum but instead go immediately to getting the horizontal force acting on the bolt?
As a young engineer, you have been tasked to select the location of a wind turbine based on the details of the location and relevant specification below:Air densityAverage air velocityDiameter of wind turbine bladesLOCATION A1.29 kg/m3 54 km/h 70 mLOCATION B1.21 kg/m3 63 km/h 60 m By comparing the amount of power generated (in MW) at Location A and Location B, determine the location that will give the optimum wind power generation.9 kg of Refrigerant 134-a is initially at 26.69°C with enthalpy of 100 kJ/kg. Heat is transferred to the refrigerant under a constant-pressure process until the entropy of the refrigerant reaches 0.9795 kJ/kg.K.(i) Determine the final temperature of the refrigerant(ii) Calculate the boundary work, Wb, in kJ.Assist your answer with a proper P-v diagram indicating the properties,process, and boundary work region clearly.(iii) Explain the reason behind the high amount of boundary work obtained in (ii).Assist your explanation with relevant sketching.
Suppose we have a piece of a candy bar that has an initial mass of 28g. If we ignite the piece of candy bar (literally burn it), and it increases the temperature of 285.23g of water from 18.95°C to 77.43°C, how many calories per gram of energy did the candy bar provide if the final mass of the marshmallow is 4.45? Note: 1.00 cal = 4.184 J. Give your answer in units of cal/g.
Engineering economics Investing in Electrical Efficiency Two pumps capable of delivering 100 hp to an agricultural application are being evaluated in a present economy study. The selected pump will only be utilized for one year, and it will have no market value at the end of the year. Pertinent data are summarized as follows: ABC Pump XYZ PumpPurchase price $2,900 $6,200Maintenance cost $170 $510Efficiency 80% 90% If electric power costs $0.10 per kWh and the pump will be operated 4,000 hours per year, which pump should be chosen? Recall that 1 hp = 0.746 kW. Choose XYZ because it provides least cost.
1. Energy consumption in a country from 2001 to 2011 increased from 1041.3 million to 1526.1 million BOE (barrels of oil equivalent). If the high calorific value (HHV) of the oil is 141,000 kJ/gallon what is the increase in energy consumption over 10 years in Joule units. What is the rate of energy consumption per year? 2. Based on data on the rate of energy consumption per year from question no. 1, if the growth rate energy 2.5% per year, calculate the doubling time (td) and what is the approximate rate of energy growth in 2021.
Q#01: Explain the following terms in your own words. Mach Number. Sub-Sonic. Angle of Attack. Thrust Chord Line. Drag Coefficient. Pitch Moment. Wind Tunnel. 10. Skin Drag.
A balloon filled with helium (of density ρHe = 0.164 kg/m3 ) has a cube shape and rises through the stratosphere. Air density is given by ρ(z) = ρa exp(− gz/ RT), where ρa = 1.225 kg/m3 is the density of air at the sea level, g = 9.81 m/s^2 is the gravitational acceleration, R = 287.06 J/kg/K is the specific gas constant of air, and T is the air temperature, which is constant in the stratosphere and equal to 217 K (Note that this expression for the atmospheric density is strictly correct only in the isothermal region of the stratosphere. However, please use it for solution to this problem). This balloon is designed so that ρHe and its side length h = 30 cm remain constant for all z. The lower surface is located at z and the upper surface at z + h. Derive an expression for the buoyancy force on the balloon and compute the maximum altitude to which the balloon rises in a unit of m.
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plsss pasagot po asap nandyan po link ng steam table na gagamitin salamat using this steam table https://www.google.com/url?sa=t&source=web&rct=j&url=https://homepages.wmich.edu/~cho/ME432/Appendix1Udated_metric.pdf&ved=2ahUKEwictab6tLX3AhU4yjgGHZ7OANIQFnoECDQQAQ&usg=AOvVaw0UoKHhB-caJ5SjO2gZ695d
Air flows steadily through an engine at constant temperature, 127 deg C. Assuming that the Kinetic and Potential energies are negligible and if the exit pressure is one-fourth of the initial pressure, in which the initial pressure is 702 kPa, the work per mass is Answer kJ (nearest whole number).