Numerical Investigation of a modified Kalina cycle system for high-temperature application and genetic algorithm based optimization of the multi-phase expander's inlet condition

Hossain, Mohammad Masrur; Hossain, Md. Sakib; Ahmed, Niyaz Afnan; Ehsan, M. Monjurul

doi:10.1016/j.egyai.2021.100117

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Similarly, the exergetic efficiency of the Kalina cycle increased from 10.95% to 21.56% when the ammonia proportion was improved, while the overall cycle's energetic efficiency increased from 76.93% to 77.52%. Other studies have confirmed the correlation between the rising content of ammonia in the working fluid and the increment in power output and efficiency [74][75][76].…”

Section: Effect Of Ammonia/water Ratiomentioning

confidence: 69%

Energy and exergy analysis of entrained bed gasifier/GT/Kalina cycle model for CO2 co-gasification of waste tyre and biochar

Kartal

Özveren²

2023

Fuel

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Section: Effect Of Ammonia/water Ratiomentioning

confidence: 69%

Energy and exergy analysis of entrained bed gasifier/GT/Kalina cycle model for CO2 co-gasification of waste tyre and biochar

Kartal

Özveren²

2023

Fuel

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“…Cheng et al [5] state that the Kalina cycle is a promising technology for converting low-grade heat into electricity. Hossain et al [6] note that the Kalina cycle is increasingly used in high-temperature applications (where the working fluid sometimes reaches 500 • C at the turbine inlet). Figure 1 describes the application of the Kalina cycle dedicated to electricity production.…”

Section: Introductionmentioning

confidence: 99%

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

Mungyeko Bisulandu,

Mansouri,

Tsimba Mboko

et al. 2024

Energies

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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 H2O+NH3 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 H2O+NH3 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.

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“…According to Cheng et al [17], the Kalina cycle is a promising heat-to-electricity conversion technology for low-grade heat recovery applications. According to Hossain et al [18], in recent years, the Kalina cycle has seen increasing interest in high-temperature applications (with average working fluid temperatures of 500 • C at the turbine inlet). It is used as an alternative to the conventional steam Rankine cycle.…”

Section: Introductionmentioning

confidence: 99%

“…The results show that the modified LNG system has an overall acceptable performance. Hossain et al [18] presented a model for optimizing the performance of two types of Kalina cycles (Kalina-12A cycle and Kalina-12B cycle) based on the influence of parameters such as ammonia concentration in the working fluid and evaporation pressure. This optimization aims to maximize the multiphase valve's net power output under steady-state operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance of a Cogeneration Plant Driven by Waste Heat from Cement Kilns Exhaust Gases

et al. 2023

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The dwindling and scarcity of fossil energy sources is the basis of the energy transition, where renewable resources are increasingly valued. The purpose of the cogeneration system studied in this article is to recover the residual heat from the gases coming out of the chimneys of the cement kilns, to produce at the same time the electricity and the heat required for offices and residential houses of cement workers. Cement kilns are reputed to be energy-intensive, generating excessive heat losses. These heat losses are found mainly in the conduction–convective and radiative modes, representing about 26% of the overall heat input to the system. Nevertheless, the gases at the chimney outlet can still have temperatures between 250 and 350 °C, which presents a non-negligible potential for a cogeneration system. This study compares the thermal performance of different cogeneration plant configurations (KCA, KCB, and KCC systems) using the Kalina cycle to determine the best one. Several assumptions were made to reduce the complexity of the model. MATLAB and Excel software were used to solve the system of equations. After extensive analysis of the results, the KCA system showed the best performance, compared to the KCB and KCC systems, with a thermal efficiency of 22.15%, an exergy efficiency of 45.12%, and a net electrical capacity of 2565.03 kWe. Model sensitivity to concentration, temperature, and pressure variations also gave the KCA system the best-performing system. Evaluation of the excess heat flux removed from the process yields values of 7368.20 kW, 7421.86 kW, and 8094.15 kW for the KCA, KCB, and KCC systems. The results of this article serve as a decision support tool for installing the cogeneration system via the Kalina cycle in cement installations.

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Numerical Investigation of a modified Kalina cycle system for high-temperature application and genetic algorithm based optimization of the multi-phase expander's inlet condition

Cited by 11 publications

References 28 publications

Energy and exergy analysis of entrained bed gasifier/GT/Kalina cycle model for CO2 co-gasification of waste tyre and biochar

Energy and exergy analysis of entrained bed gasifier/GT/Kalina cycle model for CO2 co-gasification of waste tyre and biochar

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

Thermodynamic Performance of a Cogeneration Plant Driven by Waste Heat from Cement Kilns Exhaust Gases

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