# Search for tag: "second law"

#### 7a Introduction to the Thermodynamics course

Here I go through how the course works. I go through the learning outcomes and describe the flow of the course. I introduce the first and second laws and say that we will learn a lot more about them…

From  Stephen Beck 0 likes 652 plays 0

#### 12g Example of throttle and HX

Here I go through the two examples of a throttle and a heat exchanger. I look at the energy equation, and solve that. Then I look at the rate of entropy production. It is positive in both cases…

From  Stephen Beck 0 likes 233 plays 0

#### 13a Heat engines

Here I introduce the concept of the heat engine. I define the source and the sink. I then use the first and second laws of thermodynamics to derive the Carnot efficiency. I then point out that the…

From  Stephen Beck 0 likes 677 plays 0

#### 11b Introduction to the second law 2

Here I describe what is hapenning in the two videos of the kid falling off the bike and the kid falling off the bike in reverse. I describe the natural order of things beign that order decreases and…

From  Stephen Beck 0 likes 578 plays 0

#### 11a Introduction to the second law

Here I show a series of irreversible processes. I discuss how in each case high quality energy is converted into lower quality energy and that this is inevitable. I introduce the concept of entropy.

From  Stephen Beck 0 likes 629 plays 0

#### 11c Second law processes and the T-s diagram

Here I introduce the T-s diagram for ideal gasses. I show that an isentropic expansion is a vertical upward line on this and an isentropic compression is a vertical downward line. I then show that in…

From  Stephen Beck 0 likes 1,217 plays 0