MASS AND ENERGY-CONVERSION IN PROCESSES OF CHEMICAL-ENGINEERING

Being the practice of chemical engineering, chemical industry is among the industrial branches with a high energy consumption. This is scien tifically based on the unity of mass and energy conversion. Although t heoretically well-known these interconnections have only little influe nce on engineering investigations. That's why incomplete and untrue ev aluations of the energetic conditions of chemical processes can occur. After a brief historical survey, a classification of the different ki nds of energy for chemical processes will be proposed as a help in sol ving this problem. This classification facilitates a deeper understand ing of the energetics of chemical processes. To increase these investi gations the term cumulative exergy expenses can be used for the evalua tion of chemical processes. This evaluation considers both the convers ion of energy and the conversion of mass. These connections are discus sed by one example. If these research purposes are generalised for str ategic development, they will lead to a new generation of chemical and energetical plants.