Search for tag: "first law"

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…

Here I go through two examples of the first law of thermodynamics for closed systems. The first on e is a polutropic process where I calculte the final conditions and the heat and work. The second…

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…

Here I introduce the course, and inform student how they should be studying. I show the week by week plan . Then I go through the syllabus and pick up some of the fundamental concepts I will be…

I introduce heat exchangers. Then I look at the heat transfer in them from the point of the first law of Thermodynamics. I then explain the irreversibility in a heat exchanger in terms of entropy. I…

Here I derive the steady flow energy equation for thermal systems. I show how it can be used for calculating the work in an adiabatic process using the gas laws.

Here I show that the polytropic process is a good way of describing changes in condition for closed systems with ideal gasses. I look at different values of the exponent, n. Then I calculate some at…

Here I introduce the first law of thermodynamics by thinking about the types of energy that we will deal with. I then shpow that these are interchangeable. Finally, I deduce the energy equation.

Here I derive the four forms of the energy equation that we will use to solve different types of problem on this course. These are 1)For Closed Systems 2)For Steady Flow Thermal Systems 3)For…