Analyzing the effects on the atmosphere of exergy changes due to exhaust-gas emissions

Exergy is a type of useful or available energy and can be used to describe the capabilities of doing work of heat and matter, contained in a system at a specified state. In thermodynamic studies, a system refers to everything to be investigated within a boundary, while the environment adjacent to the system is called the surroundings. During reversible processes, whether matter is contained in a closed system or flows through an open system, the exergy is a function of the system or flow and a reference environment. This paper presented an investigation of the exergy change of the surroundings adjacent to exhaust-gas emitting ports, and the probable effects on the atmosphere. The current stable state changing point of atmosphere was determined. The paper also described the potential of doing work. The effects of the amount of exhaust gas on the atmosphere were studied through an exergy change function, which was a nonlinear dynamic function. This function accounts for the flow direction of the exhaust gas without local wind. The study showed that exergy could be used as a state function to describe the change, the stability and the order of a system. 1 tab., 8 figs