Thermodynamic Engineering

In ancient days, thermodynamic aspects exist has less interest. Only during 19^th century thermodynamic formal study began by introducing heat and capability of some particles to produce heat from work. Scope of thermal engineering in thermodynamics has increased vastly with the invention of entropy and its correlation or relationship with properties of thermal energy. Thermodynamic engineering has been revolutionized in more recent years. Engineering design and thermodynamic analysis are plausible right after the proposal of second law of thermodynamics. The major concept of thermal engineering concept in thermodynamics is classical thermodynamics. It deals mainly with macroscopic behavior of particle. Hence thermodynamics is considered as physical science and engineering science.

Basic concepts of thermodynamics

Thermodynamics defines system interaction with surroundings. System is nothing but investigative object. System is well separated by boundaries and is referred as system boundary.  The external environment of system is referred as surroundings. System with fixed mass is closed system. System where mass flow occurs is open system or control volume. Closed system which has no interaction with surrounding is isolated system.

System condition at any time is referred as state. System properties are of two types namely intensive property and extensive property. Extensive property deals with size of the system. For instance volume, energy, entropy and mass are extensive property. Intensive property is not dependent on system size. For instance temperature and pressure are intensive properties.

Application of thermal engineering in thermodynamics

Exergy analysis: Exergy analysis helps in designing of thermodynamic   system with knowledge of energy efficiency. It improves the existing thermodynamic system. Exergy analyses give insight of first law approach. The exergy concepts are coupled with economy engineering and referred as thermoeconomics. It helps in reducing source cost like capital investment cost, maintenance cost, energy loss and operating cost. Hence thermoeconomics is cost minimization that is based on exergy.

Internal combustion engine: Reciprocating internal combustion engine is designed based on thermodynamic engineering aspects. It is widely used in automobiles, electric generators, trucks, gas turbines and buses.

Questions:

• What are engineering guidelines to improve thermodynamic efficiency?
• How to retrieve datas of property for thermodynamic reactive systems?
• What are thermodynamic engineering aspects?