Exergy Analysis In Thermodynamics

dwell on the factors that preclude the attainment of ideal-performance of the system. Analysis based on the combined first and second law of thermodynamics commonly known as availability analysis or exergy analysis is particularly suited for achieving more efficient resource use since it enables the locations, types and true magnitudes of waste and loss to be determined. This information is quite helpful for the design of thermal systems, for directing the efforts to reduce the sources of inefficiency in the existing systems and evaluate system economics. [1, 2 & 3].

In thermodynamics, exergy is defined as the maximum theoretical work which can be obtained as the system comes to equilibrium with its reference environment. Unlike energy, exergy

The magnitude of exergy destruction is a quantitative measure of irreversibilities present in the system. Thus, the knowledge of the magnitude of exergy destruction and identification of the component where maximum exergy destruction occurs can be helpful in the better design of the equipment and selection of appropriate processes for minimizing losses.

Flynn et al. [4] studied a turbocharged, intercooled diesel engine using second law analysis to evaluate low-heat-rejection engine concepts. They were performed the simulation of engine cycle process. Primus and Flynn [5] reported a study demonstrating the benefits of using the second law in determining various energy losses in a diesel engine. Defining a thermodynamic system as outside the engine cylinder. Alkidas [6] applied energy and exergy balances to a diesel engine using experimental measurements. Shapiro and Van Gerpen [7] extended their earlier work to include a two-zone combustion model and applied this model to both a compression-ignition and a spark ignition engine. As before, their study included chemical exergy considerations. They presented the

Van Gerpen and Shapiro [10] performed a second law analysis of diesel engine combustion employing a standard cycle simulation Rakopoulos et al. [11] investigated the accumulation and destruction of exergy in a direct-injection diesel engine based on experimental data. Rakopoulos et al. [12] analyzed the multi-cylinder turbocharged diesel engine from a second law perspective, considering single zone thermodynamic model for combustion process. A comprehensive computer software was developed to simulate various process. Datta and Som [13] developed a theoretical model for exergy analysis, based on availability transfer and flow availability, in the process of spray combustion, to evaluate the total thermodynamic irreversibility. Caton [14] reviewed over two dozen previous studies that had investigated the operation of internal combustion engines using the second law of thermodynamics. C.D. Rakopoulos and D.C. Kyritsis [15] applied the first and second law analysis is used to calculate the rate of entropy production as a function of fuel reaction rate. In the modelling of engine, a three-hole