Optimum parametric performance characterization of an irreversible gas turbine Brayton cycle

Abstract

The main objective of this paper is to apply Ecological Footprint methodology as a tool to analyze the Portuguese textile industry. This analysis is related to energy and resources consumption in dyeing, printing and finishing processes. It also includes identification of mitigation measures to increase energy efficiency, promoting at the same time the reduction of CO 2 emissions and consequently the decrease in industry's Ecological Footprint. Moreover, the analysis presents the Ecological Footprint reduction potential for each mitigation option proposed for an important textile facility located in the North Region of Portugal, used as a case study in this work. The results for the case study showed that the total Ecological Footprint accounted, for the year 2016, summed up to 4890 gha. Furthermore, the energy category corresponds to more than 50% of the total Ecological Footprint estimation, and natural gas was the most required fuel for the processes. The calculation of the Ecological Footprint in the textile facilities can be used as a tool to analyze the processes' energy efficiency and to quantify the global impact of the implementation of mitigation measures in the energy field. The result is an indicator shown in a common unit, gha (global hectare) and it can be easily used to compare energy-intensive processes and industrial sectors. In addition, it can be used to analyze how each sector can impact the country's total demand for resources.

Thermodynamic modeling of a hybrid solar gas-turbine power plant

“…It is not the objective of this paper to perform a detailed optimization analysis. The model presented in this work, although analytical and depending on a relatively reduced number of variables, would require a multi-parametric optimization analysis [25,44,45] in order to obtain realistic conclusions. It is only intended here to check the evolution of g and r e with three key parameters: the pressure ratio of the turbine and the mentioned temperature ratios.…”

“…(39)- (41) in Eqs. (42)- (45) provided that the ratios T 3 =T L ; T 1 =T L , and T x =T L can be expressed in terms of the mentioned temperature and pressure ratios, and the parameters associated to losses. Finally, the relevant heat rates are:…”

Assessment of the integration of CO2 capture technology into oil–sand extraction operations

“…A thermodynamic analysis has been carried out through the corresponding mass and energy balances in the different systems, similarly as in refs. [10,20], taking into consideration the initial parameters shown above. The two different approaches for SAGD reference configurations will be separately assessed.…”

Application of Nanofluids in Gas Turbine and Intercoolers—A Comprehensive Review

“…Maher et al [ 29 ] optimized the parametric performance characterization of an irreversible gas turbine Brayton cycle. They developed a mathematical model based on thermodynamic fundamentals and applied it to a Brayton cycle with a two-stage compressor, intercooler, regenerator, and reheat.…”