Sustainable Energy, Si Edition
2nd Edition
ISBN: 9781337551670
Author: DUNLAP, Richard A.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 3, Problem 4P
(a)
To determine
Find the amount of coal burned per second.
(b)
To determine
Calculate the amount of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
An average American consumes approximately 105 kJ of energy per day. The average life expectancy of an American is 77.9 years.
How much coal would need to be burned to provide enough energy to meet a person's energy demands if the efficiency of energy production from coal is 38%?
☐g coal
Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from a nearby river (with an upstream flow of 10-m3/s and temperature 20 °C) to take care of waste heat. The heat content of the coal is 8,000 Btu/lb, the carbon content is 60% by mass, and the sulfur content is 2% by mass.
How much electricity (in kWh/yr) would the plant produce each year?
How many pounds per hour of coal would need to be burned at the plant?
Estimate the annual carbon emissions from the plant (in metric tons C/year).
If the cooling water is only allowed to rise in temperature by 10 °C, what flow rate (in m3/s) from the stream would be required?
What would be the river temperature if all the waste heat was transferred to the river water assuming no heat losses during transfer?
Estimate the hourly SO2 emissions (in kg/h) from the plant assuming that all the sulfur is oxidized to SO2 during combustion.
Problem 3. A nuclear-power station produces 750 MW per year as useful energy.
costs include 150 MW lost in distribution, and 290 MW lost as heat. What is the efficiency of
the plant?
The
energy
Chapter 3 Solutions
Sustainable Energy, Si Edition
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Answers are given! please explain the steps of the full solution! ASAP Energy density of hydrogen in a 700bar tank is 5MJ/KG.arrow_forwardCould you give me some explanation, the correct answer is at the bottom of the question.arrow_forwardA diesel engine required 9,800 kJ of heat to produce 1,800 kJ of power. What is its efficiency?arrow_forward
- A 600 MW coal-fired power plant has an overall thermal efficiency of 38%. It is burning coal that has a heating value of 12,000 Btu/lb, an ash content of 5%, a sulfur content of 3,0%, and a CO2 emission factor of 220 IWmillion Bin. Calculate the heat emitted to the environment (Btu/sec), the coal feed rate (tons/day), the degree (%) of sulfur dioxide control needed to meet an emission standard of 0,15 lh SO2/inillion Bin of heat input, and the CO2 emission rate (metric tons/day).arrow_forwardIn 2016, about 30 million tons of combustible municipal solid waste (MSW) was generated in the United States. One ton of MSW burned in waste-to-energy plants in the United States, generated about 474 kWh of electricity. If the average annual electricity consumption for a U.S. residential utility customer was 10,399 kilowatthours (kWh). How many households could use this amount of electricity?arrow_forwardThe principal component of LPG is butane, C4H10 (g). If combustion of 1 mole ofbutane produces 126 kJ of heat, how much heat can be generated by completecombustion of one 11.0 kg gas tank?arrow_forward
- How do I convert 10649 KWh into (KWh/(m2-yr)?arrow_forwardCellulose is to be burned in a waste to energy facility. The chemical equation for cellulose is C6H10O5. The atomic weights of C, H, and O are 12, 1, and 16, respectively. The ideal equation for the combustion of cellulose is C6H10O5 +6O2à6CO2 + 5H2O. Calculate the stoichiometric oxygen necessary for the combustion of cellulose. Calculate the stoichiometric air supply. The air is 23.15% oxygen by weight. If the facility operates at 1.5 tons/hour at 100% excess air. How much air is required?arrow_forwardCalculate the total mass of CO2 in the atmosphere. State all assumptions. Compare this to the actual of ~3.6 ×1012 tonnes. At our current rate of emissions, how long would it take to emit a quantity equal to the present mass of CO2 in the atmospherearrow_forward
- An engine absorbs 100 J and rejects 60 J in each cycle. (a) What is its efficiency? (b) If each cycle takes 0.5 s, find the power output of this engine in watts.arrow_forward2. Consider the system described in the news: at night, when there is energy left, water is pumped from a large lake to a reservoir at 80 m above the lake level. During the day, this water is used to generate energy in a turbine located 80 m below the elevated reservoir. Considering that the water flow is always 5000 liters/s (both at the inlet of the reservoir and at the outlet) and that the pump and turbine efficiencies are 70%, what is the power (in kW) required by the pump and the power (in kW) recovered in the turbine. Data: The pipe diameter is always the same along the system (d = 0.5 m); g = 10 m/s2; γ = 9810 N/m3. Matter transport phenomena; Please make it typeable as handwriting interferes with understandingarrow_forwardDetermine the amount of SO2 released from the combustion of 1500 gallons of waste oil (135,000 BTU/gal) with 1.6 wt % S. The oil has a specific gravity of 0.86. How much reduction would this need to meet NSPS for a 125 MW electric utility steam generation source (35% efficiency)?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Sustainable EnergyCivil EngineeringISBN:9781133108689Author:Richard A. DunlapPublisher:Cengage LearningEngineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning
Sustainable Energy
Civil Engineering
ISBN:9781133108689
Author:Richard A. Dunlap
Publisher:Cengage Learning
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning