Algerian Journal of Renewable Energy and Sustainable Development
Volume 3, Numéro 1, Pages 97-103
2021-06-15
Thermodynamic Optimization Of An Air Bottoming Cycle For Waste Heat Recovery From Preheater Tower In A Cement Industry
Authors : Youcef Redjeb . Khatima Kaabeche-djerafi .
Abstract
This work evaluated the air bottoming cycles(ABC) as a technology for waste heat recovery(WHR)at the level of thepreheater tower in a cement industry. Anoptimization code has beendeveloped in MATLAB environment and linked with REFPROP database as a way to design and calculate the different parameters and points of the cycle. The theory of power maximization is adopted and the genetic algorithm is employedasa wayto maximize the net power output of the cycle,whilea case study of a real cement plant has been taken into considerationfor the examination purpose. Results showed that the integration of the ABCcycle for energy valorization contributes to covering around8.5% of the industry need forelectrical energy, by generating an amount of power that can achieve 1.07 MW.In addition, althoughthe cycle has showna low efficiency, it can be a practicalWHR solution especially in case of water deficiency.
Keywords
ABC; Waste heat; Optimization; Cement; Exhaust gas; Preheater;
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