Review Session

Question 1

What is energy?

Answer 1

Measured in Joules

Question 2

What is power ?

Answer 2

Measured in Watts (Joules per second)

Question 3

How we quantify electricity?

Answer 3

Wh of kWh

Question 4

Describe basic, gas, and combined cycle turbines. How they work general idea.

Answer 4

Basic: uses boiler to create steam which spins the turbine
Gas: Combustion reaction in combustion chamber creates heat and pressure which spins turbine
Combined : takes excess heat from the gas cycle and uses that to produce steam. It puts together both the basic principles of combustion and heat and combines them to be more economically and power efficient.

Question 5

Glen Canyon Dam LCA ?

Answer 5

-has concrete, steel, etc are created and emit emission, this creates greenhouse gas emissions

Question 6

Hydro different from wind and solar how?

Answer 6

Emissions from flooded biomass and displaces green land (trees).

Question 7

DO

Answer 7

Dissolved Oxygen (low: hypoxic water; hypoxia)

Question 8

• BOD

Answer 8

Biochemical Oxygen Demand

– A measure of how much dissolved oxygen is being consumed as microbes break down organic matter.

Question 9

• TDS

Answer 9

Total Dissolved Solids

Question 10

Parking plays a major role in lifecycle?

Answer 10

We dont know how many parked cars we have at a given time not to mention exactly how many parking spaces we have in general. This plays a major role in the uncertainty in the LCA.