Steam Properties: Thermodynamics
Channel: MechanicaLEi
Date: 31/12/2017

Welcome back MechanicalEI, Did you know that nearly ninety percent of all electricity generated in the world is by using steam as the working fluid? This makes us wonder, What are the properties of steam? Before we jump in check out the previous part of this series to learn about the what irreversibility is? Now, If in a kilogram  liquid-vapour mixture, if x kg is the mass of vapour and one minus X KG is the mass of liquid then X is known as the quantity or dryness fraction of the liquid vapour mixture. mathematically speaking dryness fraction X equals mass of vapour upon the sum of mass of vapour and the mass of liquid. Enthalpy is a measurement of energy. It is equal to the internal energy of the system plus the product of pressure and volume. More technically, it includes the internal energy, which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure. It is denoted by the letter H. In common use however, only the change in enthalpy is discussed. The internal energy of a system is the energy contained within the system, excluding the kinetic energy of motion of the system as a whole and the potential energy of the system as a whole due to external force fields. It is denoted by the letter U. Hence, we learned about what dryness fraction of steam is, then moved on to learn about enthalpy and finally saw what internal energy is.

Attributions:

Doh De Oh by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100255
Artist: http://incompetech.com/

Subtle Library by Fabian Measures (http://freemusicarchive.org/music/Fabian_Measures/) is licensed under a Creative Commons Attribution licence ( https://creativecommons.org/licenses/by/4.0/)
Source: http://freemusicarchive.org/music/Fabian_Measures/Emotion_Music/Subtle_Library