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MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
2nd Edition
ISBN: 9781337551755
Author: DUNLAP
Publisher: Cengage Learning US
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Chapter 3, Problem 9P
To determine
Calculate the amount of coal produced in the UK between 1820 and the present.
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At 260°C and 7.62 m/s, the products of combustion of 635 kg coal per hour travel through a breeching. Excess air, 50%.Assume square section breeching and find its dimensions. Sea level, and density of the flue gas-coal fired = 0.68 kg/m3 Ultimate Analysis of coal is as follows: Sulfur 0.55% ; Nitrogen 1.17% Hydrogen 4.5% ; Oxygen 6.03% Carbon 84.02% ; Ash 3.73%
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MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
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- Determine the mass of carbon tetrachloride that should be mixed with 80 kg of glycerin so that the combined mixture has a density of 1450 kg/m3.arrow_forwardThe volume of a tetrachloride having a mass of 2498 kg is 0.563 m3. Compute the specific gravity. Round your answer to 2 decimal places.arrow_forwardchoose the correct answerarrow_forward
- 3.5 kg of an ideal gas is heated at constant temperature from 15 m3 and 4.0 atm to 35 m3 at Determine the work donearrow_forwardBenzene and Kerosene has a specific weight of 53 lb/cu. ft and 49 lb/cu. ft, respectively. The weight of benzene is 7.8 lb and their combine mixture has a specific weight of 51.5 lb/cu. ft. Determine the weight of kerosene in lb.arrow_forwardCivil Engineering In a steam turbine, steam with the mass flow rate of 201 kg/s enters the turbine al the lemperature of 601°C and the pressure of 16 MPg and exits at the lemperature of 31°C and the quality of 96% Determine the power production in the turbine (in kW), The change in kinetic and potential energies are negligible and the process is steady slate and adlabalic. List all your assumptionsarrow_forward
- Figure 2 shows an assembly made of a steel tube of internal and external diameter of 20 mm and 30 mm respectively, brass and copper bars, each having 25 mm of diameter. The three materials have equal length of 500 mm and are symmetrically rigidly fixed at the upper end while being joined by a horizontal collar (with negligible mass) at their bottom end. An application of a vertical downward load P on the assembly, results in storing a total of 20 J of energy. The moduli of elasticity for steel, brass and copper materials are ESt=200 GPa, EBr=100 GPa and ECu=80 GPa, respectively. Calculate 1. The load P if it is applied gradually.2. The load P if it is applied suddenly.3. The impact load P that falls from a height of 200 mm above the collar.arrow_forwardOut of a total of 300 ft-lb of work put into the machine, an amount equal to 75 ft-lb is lost in overcoming friction. What is the efficiency of the machine?arrow_forwardProb-3 A cyclic machine, shown in Fig. below receives 300 kJ from a 1000 K energy reservoir. It rejects 125 kJ to a 400 K energy reservoir and the cycle produces 200 kJ of work as output. Is this cycle reversible, irreversible, or impossible? TH= 1000 K HE Q..=300 kJ H W 200 kJ = 19₂² 125 kJ TL=400 Karrow_forward
- Select the correct statement. O a. The source of solar power is from sunlight and it is captured by wind mills and converted into electricity. It is also used for heating, drying etc O b. Wind mills can have a capacity to produce energy in a large-scale, which is an alternative to fossil fuels. O c. Most of the renewable energy sources are available finite in nature, so it will run out easily as like as non renewable energY sources. O d. Construction cost of dam is very less and also it can cause flooding of surrounding communities and landscapes.arrow_forwardA tank of carbon tetrachloride has a mass of 784 kg and a volume of 0.481 m3. What is its specific gravity? Round off to two decimal places.arrow_forwardA gas undergoes a cycle in a piston-cylinder assembly consisting of the following three processes: Process 1-2: Constant pressure, p = 1.4 bar, V₁ = 0.028 m³, W12 = 10 kJ Process 2-3: Compression with pV = constant, U3 = U₂ Process 3-1: Constant volume, U₁ - U3 = -25 kJ There are no significant changes in kinetic or potential energy. (a) Calculate the net work for the cycle, in kJ. (b) Calculate the heat transfer for process 1-2, in kJ. Part A Your answer is correct. Calculate the net work for the cycle, in kJ. Wcycle = -7.63 kJarrow_forward
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