Properties of Pure Substance (Basic of thermal Engineering)

This presentation is for academic use only.

1. Dr. Vishal Patil Associate Professor Department of Mechanical Engineering 1 Sharad Institute of Technology, College of Engineering, Yadrav-Ichalkarnji Department of Mechanical Engineering Thermodynamics Properties of Pure Substance (Part I)

2. 2 Pure Substance Pure substance: A pure substance may be defined as a substance which is chemically homogeneous and has a fixed composition. Phases of Pure Substance: Solid Liquid Gases

3. 3 Phase Change Phenomenon of Pure Substance 100º C 0.01º C -10 º C Heat Addition Temperature C B A D E F Heat of Fusion Sensible Heat Heat of Vaporization Super Heat Warming of ice Solid State Heating of water Superheating Ice Water Water Steam

4. 4 Saturation Pressure and Temperature Saturation Temperature Saturation Pressure Liquid Region Superheated Vapour Region Saturation line

5. 5 Compressed Liquid and Saturated liquid Degree of sub cooling = T sat – Ti Where Ti – Initial Temperature Terminology Vaporisation Dryness Fraction Evaporation Dry saturated steam Boiling Superheated steam Saturation Temperature Degree of superheat Saturation Pressure Critical Point Steam Triple Point Saturated Steam Sublimation Wet Steam Sublimation line Terminology

6. 6 This video is prepared for academic use only. References: [1] Thermal Engineering, Prof. M. M. Rathore, Mc Graw Hill, Publication House