Reference no: EM131280327 , Length: word count:200

answer 10 multiple choice question and 2 essay question. only reference Worrell, W. A., & Vesilind, P. A. (2012). Solid waste engineering (2nd ed.). Stamford, CT: Cengage Learning.

Question 1
1. Power plants produce both __________ and __________.

bottom ash; fly ash

road base material; heat

variant heat; pH solutions

high temperatures; MSW

Question 2
1. A city consists of 50,000 people. Each person produces, on average, 5 lb per day of municipal solid waste (MSW). A power plant burns the MSW to produce power for homes. If each home uses 1000 kW-hr/month, how many homes can be powered by the MSW? Hint: see the lecture materials and note that the rule of thumb at the top of page 273 should say "500 kilowatt-hours of electricity" rather than "500 kilowatts of electricity". A month has an average of 30.4 days.

63 homes

76 homes

1900 homes

3,800,000 homes

Question 3
1. A 20 gram sample of refuse derived fuel has a heat capacity of 13,000 cal/°C and a heat value of 2800 cal/g. What temperature rise is expected when the sample is combusted in a calorimeter?

0.00028 °C

0.23 °C

4.3 ° C

3.8x1011 ° C

Question 4
1. All of the following are concerns with combustion of MSW EXCEPT:

structural fill.

the potential for acid rain.

photochemical smog.

the escape of heavy metals.

Question 5
1. The control of __________ is the most important variable in maintaining a desired operating temperature in a combustion chamber.

underfire air

overlying air

water steam

exhaust gas

Question 6
1. If a nuclear power plant produces 1200 MW (Mega Watts) of electrical power and is 30% efficient, approximately how much energy of fuel is consumed each day?

4000 kJ each day

1.0x108 kJ each day

3.5x108 kJ each day

3.5x1011 kJ each day

Question 7
1. The combustion of fuel such as RDF can have undesirable side effects including all of the following EXCEPT:

waste heat generated by power plants.

the development of ash that requires disposal.

the production of carbon dioxide.

leakage of contaminated water.

Question 8
1. A furnace burns paper. Calculate the stoichiometric oxygen (O2) required for combustion. Assume the paper is pure cellulose (C6H10O5) so that the combustion equation is: C6H10O5 + 6O2 → 6CO2 + 5H2O.

0.20 g O2 /g paper

0.57 g O2 /g paper

1.2 g O2 /g paper

6.0 g O2 /g paper

Question 9
1. __________ uses the chemical makeup of fuel in order to approximate its heat value.

Compositional analysis

Ultimate analysis

Regression analysis

Final temperature

Question 10
1. What is an energy balance for heat energy in terms of the conversion of water to steam?

Heat energy = height of material X absolute temperature of the material

Heat energy = mass of material X absolute temperature of the material

Mass of material = heat energy X absolute temperature of the material

Mass of material = height of material X heat energy

Question 11

1. Define the concept of the Principle of Expediency. How is this principle important in today's standards for solid waste collection, management, and reduction? Explain your answer.

Question 12
1. Combustion produces several undesirable effects. Which do you see as the worst, and why?

Your response should be at least 200 words in length.