Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
MULTI-OBJECTIVE OPTIMIZATION OF ORC CYCLES OPERATION FOR WASTE HEAT RECOVERY IN STEEL-MAKING INDUSTRY.
Submission Author:
Thiago Gotelip Correa Veloso , MG
Co-Authors:
Thiago Gotelip Correa Veloso, Christian Jeremi R. Coronado, Cesar Adolfo Sotomonte, Antonio Alves de Moura Junior
Presenter: Thiago Gotelip Correa Veloso
doi://10.26678/ABCM.ENCIT2018.CIT18-0580
Abstract
Abstract. This study evaluates the application of an organic Rankine cycle for the generation of electricity by recovering the low-temperature residual heat of a steel-making industry. Siderurgic applications are marked by a high demand for electricity. The disposal of residual heat in these activities is a concern both financially and from the environmental point of view. This study will evaluate the multiobjective optimization of the operating parameters of an ORC cycle using R245fa working fluid for the low-temperature residual heat recovery of a process of the ThyssenKrup Steel Company of the Atlantic Steel Company (TKCSA). The thermal source evaluated corresponds to the waste gases from the company's Thermoelectric Power Plant. The operation of the plant is modeled with the ASPEN-HYSYS® software v.8.6 according to the actual process conditions. The objective functions of interest in the optimization process were to maximize the net power of the ORC cycle and to minimize the area of the heat exchangers. The operation variables of the cycle: Pinch point, superheat, vapor pressure, condensation temperature and effectiveness of the heat exchangers are selected as input conditions for the combination of the parameters in the multiobjective simulation. In this analysis, the optimal results of the use of the ORC cycle would allow the generation of net power above 2100 kW.
Keywords
Organic Rankine Cycle, Waste Heat Recovery (WHR), steel industry
