What Is Thermodynamic Engineering?

Thermodynamics engineering is also known as engineering thermodynamics. Thermodynamics is the discipline that studies the nature of a material system at equilibrium and establishes an energy balance relationship in thermal phenomena, and interacts with the outside world when the state changes. Engineering thermodynamics is one of the first branches of thermodynamics. It mainly studies the laws and applications of the mutual conversion between thermal energy and mechanical energy and other energy. It is one of the important basic disciplines of mechanical engineering.

Thermodynamic Engineering, also known as Engineering Thermodynamics,

Engineering thermodynamics is a macro theory of thermal phenomena, and the research method is macro. It is based on the first law of thermodynamics,

Ancient humans have long learned to use fire and use fire, but later they paid attention to the essence of hot and cold phenomena. But until the end of the 17th century, people could not correctly distinguish the essence of the two basic concepts of temperature and heat. Under the prevailing "thermal mass theory", people mistakenly believed that the high temperature of objects was due to the large number of "thermal mass" stored. The establishment of the Fahrenheit temperature scale from 1709 to 1714 and the Celsius temperature scale from 1742 to 1745 allowed the temperature measurement to have recognized standards. Later, the calorimetric technology was developed, which provided a test method for scientifically observing thermal phenomena.

For more than 100 years, engineering thermodynamics has penetrated into various disciplines and technical fields and formed many new branch disciplines, but its main research objects are still the rules and methods of converting thermal energy into mechanical energy and making the heat engine more efficiently convert thermal energy into The main approach involved in energy work is still energy and power. Therefore, the thermodynamic cycle used to realize the closed process of thermal and mechanical energy conversion has been the focus of engineering thermodynamics research, especially the new thermodynamic cycle and the corresponding new working fluid research. Become an eternal research direction ^[1] .

Thermodynamic cycle occupies an important position in the history of the development of thermodynamics and power machinery. It is the theoretical basis of the development of thermodynamics and the core of energy power systems. It is also a focus and driving force for the development of thermodynamics. History has shown that each new thermal cycle and the development and application of its power machinery have led to a leap in energy utilization, which has greatly promoted social progress and the development of productive forces. The experiment is an example of quantitative research on thermal power conversion. With the advent of the steam engine in the 18th century, mankind has found a way to convert fossil energy into work to replace human physical incompetent labor. It has begun a new era of modern production activities and promoted The development of the first industrial revolution and capitalism also promoted the comprehensive development of engineering thermodynamics. Only the discovery of petroleum did not usher in the era of petroleum, but the invention and application of the reciprocating internal combustion engine cycle using petroleum as the fuel brought mankind into the era of petroleum.

Engineering thermodynamics is developed on the basis of production practice, and its theoretical research achievements have in turn promoted technological innovation in the field of energy and power. Some basic laws have laid the foundation of engineering thermodynamics, which plays an important guiding role in engineering. * With the continuous deepening of human exploration of nature, the continuous expansion of engineering thermodynamics research in space and time and cross-infiltration with other disciplines have formed many new disciplines. It is worth noting that #thermodynamic cycle is always the focus of engineering thermodynamics research # The principle and method of thermal power conversion and the study of ways to improve the efficiency of thermomechanics have been the main objects of engineering thermodynamics, so the study of thermodynamic cycles has been the driving force and important for the development of thermodynamics cutting edge.