Problem Set 7
These problems are not written to be mathematically challenging. Instead, the main
challenge is to find reliable data and use sound reasoning. For each of the problems that
you work out, provide a list of sources for any data you used. Be su
1. Create a table that compares the annual fuel life-cycle CO 2 emissions from a 2013 Toyota Prius, a
2013 Toyota Prius Plug-in Hybrid, a 2013 Nissan Leaf, and a 2013 conventional Honda Civic when
running on an E10 gasoline blend or elec
Problem Set 2
1a). 20 points
Primary Fuel Consumption (thermal power) = 3kW
[Note: there is no loss from any energy conversion or transmission]
Propane produces 139 pounds of CO2 per million BTU. CO2 production for 1 h operation i
Problem Set 1 Solution
The Itaipu dam (50/50 points)
The Itaipu dam, located between Brazil and Paraguay, is the hydroelectric facility with the largest
annual generating capacity in the World.
a) How many cities of the size of Cambridge MA co
A Native American proverb says:
We do not inherit the Earth from our Ancestors; we borrow it from our Children.
a) Please write down the famous definition of Sustainability given by the Bruntland
Commission in 1987 and another definition
System Dynamics model of the Hubbert peak (T-1, L-6)
Download the Vensim System Dynamics tool from the Vensim website (free Demo Version). Open the attached
SEHubbert.mdl file. The file contains a very simple System Dynamics model of the Hubbert peak ap
Traveling south from the USA
If you take a car from Texas and travel south, the first two countries that you will cross, after leaving the
US border, are Mexico and Guatemala.
a) If the three countries above were satisfying their electricity demand onl
Sustainability and take-back effects (R-1)
Look at the Kaya table data from Dr. Wrights sustainability lecture. What quantity are changes in
carbon emissions most correlated with? Which countries or regions are most efficiently changing
a) Why do the lecture notes express the concentration of greenhouse gases in ppm-eq CO 2?
Explain the concept of radiative forcing, specifying its units.
The lecture notes express the concentration of greenhouse gases in ppm-eq CO 2 becau