2.650/10.291/22.081/22.811 Sustainable Energy
Fall 2011
Visit to the MIT Cogeneration Plant - December 2011
Instructors: William H Dalzell, Randall Field, Michael W Golay, Yuriy Roman, Gregory Stephanopoulos, John C Wright
TAs: Giancarlo Lenci, Asha Parekh, Chunguang Wang, Qing Xu
Lecture: TR3-5 (32-155)
Information:
Announcements
Double-check your grades
Dear SE Grads and Undergrads,
I just double-checked all your 475 grades from Psets and Exams.
Now they are all in the Gradebook application. I will deliver them
to prof. Golay in 1 or 2 days.
Please proof-check all of your grades in the gradebook of your
section (from the left column, click on sections->graduates or
undergraduates->gradebook), and let me know within less than a
day if something is not clear.
Graduate students: Prof. Golay will assign your final letter grade based on your pset score, your Term Paper and your participation in the Student Led Discussion (for extra credit), as specified in the Syllabus.
Undergrads: the scores of your Final Exam will very likely be available sometimes tomorrow morning. Please make sure you review quickly your graded exam and you let me know as soon as possible if you want to claim some extra points. If you claim more points, make sure you present to me a proper reason justified by your comparison with the official solution. In such a case, I will review the exam more carefully and eventually add (or remove) points.
Finally, I would like to acknowledge Ashley Finan, Christie Lin, and Yanin Sujkai, three members of the SE Team who worked behind the scenes, for their outstanding job as Graders for the SE class.
Best,
The SE Team
Announced on 22 December 2011 5:53 p.m. by Giancarlo Lenci
Final Exam Hints #2
- The results to questions a to e are independent of the system's size.
- For part d, I suggest that you assume an arbitrary "DC Rating" value in the NREL website, and you read the resulting "AC energy"
Announced on 21 December 2011 4:14 p.m. by Giancarlo Lenci
Final Exam typo
- In part e there is a little typo which you can probably recognize intuitively. The 80% optical efficiency is the Rankine cycle heat input divided by the solar energy hitting the mirrors, and not the other way around.
Announced on 21 December 2011 3:37 p.m. by Giancarlo Lenci
Final Exam Hints #1
- For part a, you don't need to do any planetary calculation. Just use the experimental data provided by the website.
- For part d, consider that "kilowatt-peak" is a unit for the nominal power (nameplate DC rating) of a solar panel. It is called "peak", because it is the power the panel can produce under the best solar irradiation conditions.
Announced on 21 December 2011 2:49 p.m. by Giancarlo Lenci
Final Exam Today
Dear SE Undergrads,
The final exam will take place this afternoon between 1:30 PM and
7:30 PM.
The exam statement will appear on Stellar at 1:30 PM, just like any other assignment.
The exam is open-book, open-notes and open-web.
You should complete your exam and upload it to Stellar no later than 7:30 PM. Make good use of your time, since no extension will be given.
As I already told you several times, please make sure you have a reliable internet connection, computer, text editor (e.g. Word) and spreadsheet program (e.g. Excel). You can always work in one of the many Athena computers at MIT, but please make sure nobody around you is working on your same exam.
You are not allowed to communicate about the exam with anyone, before 7:30 PM.
The exam is very straightforward, so very likely you should be able to solve it without any hints. However, please email me if you think some parts are not clear enough.
Good luck!!
The SE Team
Announced on 21 December 2011 7:07 a.m. by Giancarlo Lenci
