Professor Review

Question 1

Exponential formula from midterm

Answer 1

P=Poe^(rt)

Question 2

Describe 2 expected impacts of climate change.

Answer 2

Before (rising sea levels, acidification of the ocean, surface temperature rising)
New: Climate change affects water system (floods)
Buildings may need more electricity for ventilation and AC if temperature rises

Question 3

Describe 2 expected impacts of climate change (rising temp) for transportation, water, buildings.

Answer 3

Transportation: emissions from vehicles and manufacturing vehicles, end of life emissions from recycling

Water: pipes, and treatment plants

Buildings: emission from cement plants, destruction of vegetation to make room for Buildings and corresponding parking spacing

Question 4

Describe 2 mitigations to greenhouse gases (longer list than for midterm).

Answer 4

• Adoption of renewable energies (solar panels and wind farms)
  
  • Making current engines more efficient and making electric cars more affordable
  • Making a building more sustainable (better ventilation less AC needed)
  • Increasing persons per transportation method

Question 5

Name 5-6 things about water systems or transportation or population growth and its efficiency

Answer 5

Water systems
Recycled water (ex. In buildings)

Water treatment process (how rigorous it must be)

Transportation of water (minimize distance)

Electricity generation from hydropower - how much water needed, how to maximize efficiency of a hydro plant

Decrease water use = less energy needed

Impacts of water scarcity on population growth - not enough water?

As no 2 kwH of electricity have the same effect, no 2 gallons of water may also have the same effect, as they use a variety of resources and variety of energy uses

Transportation
Maximize occupancy on public transportation

Use low emission fuels

Look at F_res equation!
Reduce drag resistance (frontal surface area)
More even roads (no gradation)
Eliminate rolling resistance
Easy on the acceleration pedea;

Question 6

What are 3 items we are uncertain when looking at transportation LCA building LCA

Answer 6

Transportation: different cement from different plants for roads, Aggregate from different places for asphalt, Transportation distance from the plant the to the site

Water: water treatments vary, degree of treatment required vary, Water sources vary (ex. How far you have to transport)

Electricity: mixes vary from place to place and that causes major uncertainty, Industries you may not want to involve are part of calculations, Efficiencies of obtaining electricity from different types of energy varies

Question 7

What 4 things wrong with diesel engines

Answer 7

Higher emissions of NOx, Particulate matter emissions ,Products of incomplete combustion, Inefficient in general but more efficient than gas