Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
THE ASSESSMENT OF ORC FOR WHR IN CEMENT INDUSTRY
Submission Author:
Felipe Raul Ponce Arrieta , MG
Co-Authors:
Danilo Martinelli, GLACIELE SANTOS, Tainah Pinaffo
Presenter: Felipe Raul Ponce Arrieta
doi://10.26678/ABCM.ENCIT2016.CIT2016-0453
Abstract
This work aims to estimate the specifc investment and the generation cost for the use an Organic Rankine Cycle to the recovery of waste heat in the cement industry. Working fluids were selected from some requirements, such as safety, environmental impacts and entropic behavior in the expansion process carried out in the turbine. Then the optimal operating pressure was calculated and the effect of overheating assessed in order to find the optimal operating temperature at the turbine inlet. Finally, by using the Engineering Equation Solver (EES), the maximum thermal efficiency for each fluid in the cycle studied was calculated. The values of maximum efficiency for the refrigerants that showed better results, R141b and R123, were respectively 23.14% and 21.24%. From these fluids, there was the R141b which had the lowest power generation costs (0.2786 R$/kW.h) and specifc investment costs (5,376 R$/kW), for an estimated installation cost of R$ 8,449,000.00. In the region of Minas Gerais, we concluded that the R141b is the best working fluid to be used in Organic Rankine Cycle to waste heat recovery in the cement industry.
Keywords
Organic Rankine Cycles (ORCs), Waste heat Recovery, THERMODINAMIC ANALYZE, costs, Thermal Efficiency
