Search for tag: "isentropic"

14b Example of Brayton cycle

Here I go through an example of a Brayton cycle. I show that, using previous knowledge of devices, we can calculte the heat and work terms for the three devices and therefore work out the efficiency…

From  Stephen Beck on January 18th, 2021 0 likes 1 plays 0  

12d Second law examples: Compressor and Nozzle

Here I work through two examples of the effect of isentropic efficiency on devices. I use the nozzle and the compressor as examples. I show that you need to produce a system and a T-S diagram. THen…

From  Stephen Beck on January 14th, 2021 0 likes 0 plays 0  

11c Efficiencies and the T-s diagram

Here I introduce the concept of efficiency. I show how these can be shown on a T-s diagram. THis gives the isentropic efficiency.

From  Stephen Beck on January 4th, 2021 0 likes 4 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 on March 16th, 2020 0 likes 220 plays 0  

10d Open Systems and the SFEE

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.

From  Stephen Beck on July 4th, 2019 0 likes 152 plays 0  

10a Introduction to closed systems

What is a closed system. The first law for closed systems. Definition of adiabatic and isentropic processes.

From  Stephen Beck on July 4th, 2019 0 likes 217 plays 0