> For the complete documentation index, see [llms.txt](https://daniel-soto.gitbook.io/em/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://daniel-soto.gitbook.io/em/physics-fundamentals/337-completed.md). # Raw Lecture Notes ## Lecture 01 ### Your learning goals * Form groups of two or three and discuss the following * Why are you taking this class? * What are your learning goals for this class? ### Learning Objectives * Understand how this class will function * Understand the larger context for thermal energy ### Existing knowledge * What do you already know about thermal energy? ### Interviews * What do you want to learn in this class? * What skills do you want to develop? * Why do you think these skills are important? ## Lecture 02 ### Learning Objectives * Recognize key thermal energy concepts * Recognize how thermal energy use fits in global energy system ### Thermal energy concepts * Temperature * Internal energy * Heat (transfer) * Heat capacity * Conduction * Convection * Radiation * Combustion ### Energy conversion and efficiency * What primary energy sources do we use for heat? * How efficiently do we capture and move thermal energy? ### Energy terms * End use: what the energy is used for at the instant of consumption * Primary energy: what is the original consumption in terms of energy ### Activity What do you already know about each of these thermal energy concepts? ### Activity * What questions do you want to answer in this class? ### Estimation Activity * How much air conditioning energy is used by American homes this year? ### Activity * What phenomena cause some observable things in our lives? ### Demonstrations * Calca * Sage Math Cloud ### Bathtub model * Energy * Appliances * Building Stock ## Lecture 03 ## Lecture 04 ## Lecture 05, Time Value of Money ## Lecture 6, Time Value of Money ## Lecture 7, Energy and Power and Heat ## Lecture 8, Combustion ### Learning Objectives * Calculate carbon emissions resulting from combustion and electricity * Calculate energy released by combustion ### Concepts * Energy density * Carbon emissions ### Activity * Predict what time the kettle will reach 100C ### Prediction ``` delta_T = (100K - 20.8K) => 79.2 K m_water = 750 gram c_water = 4.186 J/gram/K power = 1340 J/sec m_water * c_water * delta_T / power * => 185.5585 sec ``` ## Lecture 9, Conduction ## Lecture 10, Conduction ## Lecture 14, Midterm Review ### Topics * Units and conversions * Computational tools * Time value of money * Investment metrics * Energy and Power and Heat * Combustion * Conduction * Convection ### Concepts * Heat Capacity * Conductive Heat Transfer * Time Value of Money ## Lecture 15, Midterm ## Lecture 18 ### Lecture 18, Thermodynamics ### Deadlines * Load up coolers on afternoon of Tuesday Nov. 17th ### Homework * Temperature conversion issues * Everyone can do 3.6 over for full credit ### Questions * How much power does a refrigerator use? * Could you use a refrigerator to heat and cool your house? * What is the most mechanical work you can extract from heat energy? * What is the most heat energy you can extract with work? ### Activity * Estimate the average power of the refrigerator in the ETC ## Lecture 20, Monday 9 Nov 2015, Metrics ### Heating Degree Days * How much energy will it take to heat the ETC this winter? ## Lecture 21, Monday 16 Nov, HDD, TMY, CDD? ### Sage Math Cloud * Markdown * Allows bold, lists, headings * LaTeX * Allows math and greek symbols * Code * Allows computations ## Lecture 22, Wed 18 Nov, HDD, TMY, CDD ### Weighing of Ice Cubes ### Quiz 6 ## Lecture 23, Mon 23 Nov 2015, Economic Cost of Insulation ### Announcements ### Economic Cost of Insulation * How much insulation should we apply to a home? ### Thought experiment * You have a small cabin in a cold area * You are insulating the walls with rigid insulation * How many layers should you apply? ### Calculation * What is the area of the cabin? * What is the cost of insulation? * What does the insulation cost if you pay back over 10 years? ### Calculation * What is the yearly heating need for the cabin? * How much does this energy cost each year? ### Calculation * How does this combined cost vary with the number of sheets? ## Lecture 24, Mon 30 Nov 2015, Conserved cost of Energy ### Conserved Cost of Energy The conserved cost of energy is cost of the equivalent purchase of energy to a conservation measure. This allows us to compare this metric to the cost of energy. $$CCE = \frac{\textrm{annual extra investment cost}}{\textrm{annual energy avoided}}$$ The key to this is a clear definition of the two scenarios you are comparing. The cost is the difference in cost and the energy is the difference in energy between the two scenarios. ### CCE * calculate for the additional sheets of insulation on our cabin * write up calculation better and put in course notes * fire up sage math cloud ## Lecture 25, Projects, 2 Dec 2015 ## Lecture 26, Projects, 7 Dec 2015 ## Lecture 27, Review, 9 Dec 2015 ### Announcements * SETE evaluations * Power adapters for midterm * Sign up for teams ### Cooler reports * Break report into sections * Outline and narrate your computations ### Optional homework * Read How to Become a Straight-A Student, Cal Newport * Write a 1000-word essay on how you would change your study habits ### Self-evaluation * What is the most important thing you learned in this class? * What are you able to do now that you weren't at the beginning? * What will you remember five years from now? * What behaviors were most beneficial for your learning? * Where could you improve on your habits? * What skills have you developed? * What skills would you still like to develop further? ### Learning goals * Goal: you are able to teach yourself one of these topics 5 years from now * Goal: you can communicate your estimations to others * [Calculation Example](http://worrydream.com/ClimateChange/#media-debate) ### Major Topics * Units * Investment metrics * Energy, Power, Heat * Combustion * Conduction, Convection, Radiation * Phase change * Thermodynamics * Heating degree days * Conserved cost of energy ### Questions