Which of the following statements is incorrect? An energy budget can be based on historical data, although this is usually unsatisfactory There is no standard formula for to calculate electricity costs The electricity consumption of air-conditioning can comprise of 80%-90% of the load of a building Economic cycle operation refers to the use of favourable environmental conditions

Which of the following statements is incorrect? An energy budget can be based on historical data, although this is usually unsatisfactory There is no standard formula for to calculate electricity costs The electricity consumption of air-conditioning can comprise of 80%-90% of the load of a building Economic cycle operation refers to the use of favourable environmental conditions

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter2: Past, Present, And Future World Energy Use

Section: Chapter Questions

Problem 9P

See similar textbooks

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.
An air-conditioning unit has a cooling capacity of two tons. If the unit has a rated energy efficiency ratio (EER) of 11, how much electrical energy is consumed by the unit in 1 h? If a power company charges 14 cents per kWh usage, how much would it cost to run the air-conditioning unit for a month (31 days), assuming the unit runs 8 h a day? What is the coefficient of performance (COP) for the given air-conditioning unit?
Hello, I need some help with my civil engineer homework. I am stuck on the last question Electricity (See your home electricity bill) 1) You can obtain the daily kilowatt-hour, kWh, use for your home from the electricity bill. This ispresented differently from utility to utility. What is your monthly electricity use?1,186 kWh 2) Use 30 days equal to one month to find the average daily electric use.Daily amount: 39.53 kWh (I divided 1,186/30) 3) How many members are in your household?: 4 people 4) Your personal share is obtained by dividing the daily amount (above) by the number of people (house members) in the household: 9.88 kWh 5) Add 1.6 kWh for electric use at work, in the office, or here at QCC. The total daily electric use foryou equals.personal share + 1.6 kWh =11.48 kWh What is the Crude Oil equivalent? *With electricity, 1 gallon of crude oil produces 15kWh of electricity. Divide your answer intocrude oil conversion factor, 15 kWh, to obtain the crude oil equivalent. Crude…
Environmental Engineering, disaggregation exponential growth question: Suppose world carbon emissions are expressed as the following product: Carbon Emissions= (energy/person) x (carbon/energy) x (population) If per capita enegy demand increases at 1.5% per year, fossil fuel emissions of carbon per unit of energy increase at 1% per year, and the world population grows by 1.5% per year, a) How long would it take before we are emitting carbon at twice the current rate? b) At that point, by what fraction would per capita energy demand have increased? c) At that point, by what fraction would total energy demand have increased?
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.
A water supply company delivered an annual quantity of 5,000,000 m³, assuming an average leakage of 7%. On the maximum consumption day, the registered delivery was as follows: Hour 1 2 3 4 5 6 7 8 9 10 11 12 989 945 902 727 | 844 | 1164 | 1571 | 1600 | 1775 | 1964 | 2066 | 2110 Hour 13 14 15 16 17 18 19 20 21 22 23 24 1660 1309 1091 945 1062 1455 1745 2139 2110 2037 1746 1018 m³ m Determine: a. diurnal peak factors for the area, b. the maximum seasonal variation factor, c. diurnal consumption factors.
Environmental Engineering, disaggregation exponential growth question: Consider the following disaggregation of carbon emissions: Carbon emissions (kg C/year)= [Population] x [Energy (kJ/year/person)] x [Carbon (kg C/Energy (kJ)] Using the following estimates for the United States and assuming growth rates remain constant, 1990 amounts: Population: 2.5 x 108, growth rate: 0.6% Energy: 3.2 x 108 kJ/yr/person, growth rate: 0.5% Carbon emissions: 1.5 x 10-5 kg C/kJ, growth rate: -0.3% Find: a) The carbon emission rate in 2020 b) The carbon emitted in those 30 years c) The total energy demand in 2020 d) the per capita carbon emission rate in 2020
Problem 10 A homeowner is trying to decide between a high-efficiency natural gas furnace with an efficiency of 95 percent and a ground-source heat pump with a COP of 3.3. The unit costs of electricity and natural gas are $0.112/kWh and $1.44/therm (1 therm = 105, 500 kJ). Determine which system will have a lower energy cost.
Check my answer, please. To calculate the savings, we need to first determine reduction in waste- water generation for given 7 million population of Hongkong, only 1 million people in HK using low flush toilet and low shower head/ 1 million leaky toilet and faucet. Assume all use shower. Conventional Water fixtures End-Use Conventional fixtures Usage pattern Population Daily Usage Toilets 3.5 gal/flush 4 flushes/per/day 6 million 3.5*4*6 = 84 million gallons Showers 5 gal/min 5 min/shower 6 million 5*5*6 = 150 million gallons Faucets 4 gal/min 2.5 min/per/day 6 million 4*2.5*6 = 60 million gallons Leaks 10% of total use - - 0.1*(84+150+60) = 29.4 million gallons Total 323.4 million gallons Water efficient fixtures End-Use Water efficient fixtures Usage pattern Population Daily Usage Toilets 1.6 gal/flush 4 flushes/per/day 1 million 1.6*4*1 = 6.4 million gallons Showers 2.5…
Calculation 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 = ??
Reducing emissions from all greenhouse gas can help produce a carbon neutral result through energy efficient, renewable energy purchases, and carbon offset products. True or false
List three examples of energy production and use practices that you think are unsustainable. Write a short paragraph for each explaining why they are unsustainable and how we might make each of them more sustainable.

SEE MORE QUESTIONS

Recommended textbooks for you

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Engineering Fundamentals: An Introduction to Engi…

Civil Engineering

ISBN:

9781305084766

Author:

Saeed Moaveni

Publisher:

Cengage Learning

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Engineering Fundamentals: An Introduction to Engi…

Civil Engineering

ISBN:

9781305084766

Author:

Saeed Moaveni

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

GET THE APP

About FAQ Academic Integrity Sitemap Document Sitemap

Contact Bartleby Contact Research (Essays)High School Textbooks Literature Guides Concept Explainers by Subject Essay Help Mobile App

GET THE APP

Privacy

Your CA Privacy Rights

Your NV Privacy Rights

About Ads

Manage My Data

bartleby, a Learneo, Inc. business

		An energy budget can be based on historical data, although this is usually unsatisfactory
		There is no standard formula for to calculate electricity costs
		The electricity consumption of air-conditioning can comprise of 80%-90% of the load of a building
		Economic cycle operation refers to the use of favourable environmental conditions