Innovative Multigeneration System with Heat Exchangers for Harnessing Thermal Energy from Cement Kiln Exhaust Gases

Baby-Jean Robert Mungyeko Bisulandu (), Rami Mansouri, Marcel Tsimba Mboko, Lucien Mbozi Mbozi and Adrian Ilinca ()
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Baby-Jean Robert Mungyeko Bisulandu: Laboratoire de Recherche en Energie Eolienne (LREE), Université du Québec à Rimouski (UQAR), 300 All. des Ursulines, Rimouski, QC G5L 3A1, Canada
Rami Mansouri: Département de Génie Mécanique, École de Technologie Supérieure, Université du Québec, 1100 Rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada
Marcel Tsimba Mboko: Faculté Polytechnique, Université Président Joseph Kasa-Vubu, Boma B.P. 314, Democratic Republic of the Congo
Lucien Mbozi Mbozi: Faculté Polytechnique, Université Président Joseph Kasa-Vubu, Boma B.P. 314, Democratic Republic of the Congo
Adrian Ilinca: Département de Génie Mécanique, École de Technologie Supérieure, Université du Québec, 1100 Rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada

Energies, 2024, vol. 17, issue 12, 1-29

Abstract: This article introduces a novel multiple-cycle generation system for efficient heat recovery at high and low temperatures. The system is modeled and optimized using the M2EP analysis method (mass, energy, exergy, and performance) and the particle swarm optimization algorithm. The multigeneration system produces electricity, cold, domestic hot water, and biogas by utilizing Kalina cycles, diffusion–absorption refrigeration machines, and high-performance heat exchangers by harnessing waste heat from cement kiln exhaust gases. The Kalina cycle is employed for electricity generation, wherein the H 2 O+NH 3 mixture, heated by hot water, circulates through heat exchangers. Downstream of the Kalina cycle, the refrigeration machine generates cold by evaporating the strong solution of the H 2 O+NH 3 mixture. Hydrogen circulates in the diffusion–absorption refrigerator (DAR) circuit, facilitating the exchange between the evaporator and the absorber. The domestic hot water and biogas production systems operate at lower temperatures (around 45 °C). The simulation results for the Kalina cycle indicate an electrical energy production of 2565.03 kW, with a release of usable energy (residual gases) estimated at 7368.20 kW and a thermal efficiency of 22.15%. Exergy destruction is highest at heat exchanger 1, accounting for 26% of the total. A coefficient of performance of 0.268 and an evaporator temperature of 10.57 °C were obtained for the DAR cycle. The absorber contributes the most to energy exchanges, comprising 37% of the entire circuit. Summarizing the potential for valorizing waste heat from cement kilns, this article lays the foundation for future research.

Keywords: multigeneration plant; Kalina cycle; DAR cycle; ammonia–water; waste heat recovery; heating system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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