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 17P
(a)
To determine
Calculate the cost of energy from gasoline and from electricity from the public utility and compare it.
(b)
To determine
Calculate the transportation costs for gasoline and electric vehicles.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1) Heating the water in a 55-gallon water heater requires about 2.0 x 103 kJ of energy.
a) Assume the energy came from natural gas with 80% efficiency; how many grams of natural gas are required?
b) Assume the energy came from electricity with 80% efficiency and that the electricity was produced from the combustion of coal with 30% efficiency; how many grams of coal are required?
For problem above, calculate how much CO2 in grams is emitted to the atmosphere.
For a: Use the balanced equation for the combustion of methane (CH4) to determine how many grams of CO2are produced from the amount of natural gas required.
For b: Assume that coal produces 5.25 kJ of energy per gram of CO2 produced. Calculate how much CO2 in grams is produced.
Replacing incandescent lights with energy-efficient fluorescent lights can reduce the lighting energy consumption to one-fourth of what it was before. The energy consumed by the lamps is eventually converted to heat, and thus switching to energy-efficient lighting also reduces the cooling load in summer but increases the heating load in winter. Consider a building that is heated by a natural gas furnace with an efficiency of 80 percent and cooled by an air conditioner with a COP of 3.5. If electricity costs $0.12/kWh and natural gas costs $1.40/therm (1 therm = 105,500 kJ), determine if efficient lighting will increase or decrease the total energy cost of the building (a) in summer and (b) in winter.
ENVIRONMENTAL ENGINEERING
a). Explain the harmful or beneficial effects of Ground Level Ozone and Stratospheric Ozone.
b). Describe the photochemical reaction for the formation of Ozone. Then, explain how CFC as a base atmospheric pollutant can cause the catalytic destruction of Ozone and the subsequent stabilization of chlorine.
c). Compare the Traction Battery in a conventional Hybrid Electric Vehicle (HEV) with the batteries in a Plug-In Hybrid Electric Vehicle (PHEV) and then explain the possible emissions shift that may arise from PHEV use.
d). Explain three applicable methods of Particulate Control using gas-cleaning devices.
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
- The Energy Efficiency Rating (EER) of an air-conditioning unit is defined asthe ratio of the heat removed in Btu/h divided by the energy used in watts.The EEI (Edison Electric Institute) names an air-conditioning unit as anEnergy Star unit if it has an EER of 13 or greater. A 21⁄2-ton air-conditioningunit uses 2.41 kilowatts (2,410 watts) of energy. One ton is equivalent to12,000 Btu/h. Can this unit be termed an Energy Star unit?arrow_forwardMost car owners drive their cars an average of 12,000 kilometers a year. Assuming a 10 km/L gas consumption rate, determine the amount of fuel consumed by 150 million car owners on the following time bases:a. average daily basisb. average weekly basisc. average monthly basisd. average yearly basise. over a period of ten yearsExpress your results in gallons and liters.arrow_forward4. The human heart pumps the average adult's 6.0 liters (6000 cm3) of blood through the body every minute. The heart must do work to overcome frictional forces that resist blood flow. The average blood pressure is 1.3x104 N/m² a) How much work does the heart do to move the 6.0 liters of blood completely through the body? b) What power output must the have to do this task once a minute? Hint: When the heart contracts, it applies a force to the blood. Pressure is force/area. Model the circulatory system as a single closed tube, with crosssectional area A and volume V=6.0 liters, filled with blood to which the heart applies a force.arrow_forward
- Henry Ford’s Model T was originally designed and built to run on ethanol. Today, ethanol (190-proof alcohol) can be produced with domestic stills for about $0.85 per gallon. When blended with gasoline costing $4.15 per gallon, a 20% ethanol and 80% gasoline mixture costs $3.28 per gallon. Assume fuel consumption at 25 mpg and engine performance in general are not adversely affected with this 20–80 blend (called E20). How much money can be saved for 15,000 miles of driving per year?arrow_forwardI need the answer as soon as possiblearrow_forwardAssume that gasoline is burned with 99% efficiency in a car engine, with 1% remaining unbumed in the exhaust gases as VOCs; If the engine exhausts 16 kg of gases (MW = 30) for each kg of gasoline (MW = 100), calculate the fraction of VOCs in the exhaust. Give your answer in parts per million.arrow_forward
- choose the correct answerarrow_forwardWhat is the energy collected from the sun in watts /area as measured in the pyranometer. O a. solar battery O b. irradiance O c. solar inverter o d. voltagearrow_forwardCalculation of Energy saving We are given that Average energy use for waste water treatment = 652 KWh for 625,853 gallons Average energy use for 1 gallon waste water treatment = 652625,853 KWh Per day Average energy use for 29.522 Million gallon waste water treatment = 652625,853*29.522*106 Per day Average energy use for 29.522 Million gallon waste water treatment = 30753.29 KWh " Per day Energy saving = 30753.29 KWh " Finding How to come up with 30753.29KWh? If 652 KWh for 625,853 gallons 652,853*29.522*106 = ??arrow_forward
- If the average daily consumption of a city is 100,000 m³, the maximum daily consumption on peak hourly demand will be (a) 100000 m³ (c) 180000 m³ 3 (b) 150000 m³ (d) 270000 m³arrow_forwardParticle emissions in a house. The power goes out in your apartment (volume = 150 m3) at night, so you decide to light a few candles. These candles have a combined particle emission rate of E = 2.0 mg/h. Your apartment has a ventilation flow of 1.5 m3/min and the particles have a first order loss rate (due to deposition, which acts similar to a reaction) of 0.25 h−1, so: Write the differential equation and define the source and loss terms. Calculate the values for the source and loss terms and rewrite the differential equation with these values. What is the steady state particle concentration in your house (in μg/m3)? Write the time-varying solution to this problem and calculate the particle concentration after 1 hour of candle-burning (in μg/m3). If after 1 h of lighting the candles the power returns and the candles are all immediately put out, what will be the particle concentration 3 h after first lighting the candles?arrow_forwardArial CD E1 Question 3 Airplane of 150 tonnes reaches the speed of 900 km/h and altitude of 12.0 km. Its engines produce 100 MW of power. a) Convert all the above information into Sl units without prefixes (1 tonne = 1000 kg). Use scientific notation where appropriate. b) Calculate the kinetic energy the airplane acquires when it reaches the given speed. c) Calculate the potential energy of the airplane once it reaches the specified height. d) Given its speed and height, what is the total mechanical energy of the airplane? e) Given the power of its engines, calculate the time it would take to reach the stated speed and altitude. Express your answer in seconds.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning