What does this research mean for the field?

In a combined Kalina and booster-assisted ejector refrigeration cycle, using R290 as the base refrigerant and increasing nanoparticle mass fraction maximizes system performance, while booster placement dictates the trade-off between overall efficiency and refrigeration capacity. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.ESTABLISHES_NEW_DIRECTION.

What question did this study set out to answer?

To conduct a thermodynamic investigation of a combined Kalina and ejector refrigeration cycle, evaluating how booster locations, compression ratios, and nanorefrigerant mixtures influence thermal and exergy performance.

August 30, 2026Journal of energy resources technology.

Effects of Booster Locations and Nanorefrigerant Use on the Performance of a Combined Power/Refrigeration Cycle (Kalina Cycle and Ejector Refrigeration Cycle)

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Authors

CSCandeniz SeçkinMarmara University

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Implication

Thermodynamic modeling demonstrates enhanced efficiency with R290 nanorefrigerants and strategic booster placement in combined cycles, highlighting pathways to optimize waste-heat power and cooling.

Key Points

To conduct a thermodynamic investigation of a combined Kalina and ejector refrigeration cycle, evaluating how booster locations, compression ratios, and nanorefrigerant mixtures influence thermal and exergy performance.
Modeled a heat-driven combined cycle coupling a Kalina cycle for power generation with a booster-assisted ejector refrigeration cycle for cooling.
Evaluated two booster placements and varied the booster compression ratio to identify optimal cycle operating conditions.
Analyzed mixtures of three base refrigerants (R600a, R290, R1234ze(E)) with two nanoparticle types (TiO2, Al2O3) across mass fractions of 0 to 5 wt.%.
R290 demonstrated the highest thermal and exergy efficiencies among all evaluated base refrigerants, with performance increasing steadily as nanoparticle mass fraction rose from 0 to 5 wt.%.
Increasing the booster compression ratio led to higher thermal efficiency but simultaneously reduced the combined cycle's exergy efficiency.
Booster configuration A yielded superior overall cycle efficiencies, whereas Booster configuration B produced higher refrigeration performance.

Cite This Study

Candeniz Seçkin (2026) studied this question.

synapsesocial.com/papers/6a93f0b06c1a8fb52e79d04b https://doi.org/10.1115/1.4072643

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Implication

Thermodynamic modeling demonstrates enhanced efficiency with R290 nanorefrigerants and strategic booster placement in combined cycles, highlighting pathways to optimize waste-heat power and cooling.

Effects of Booster Locations and Nanorefrigerant Use on the Performance of a Combined Power/Refrigeration Cycle (Kalina Cycle and Ejector Refrigeration Cycle)

Discussion

Member takes

Implication

Key Points

Cite This Study

Effects of Booster Locations and Nanorefrigerant Use on the Performance of a Combined Power/Refrigeration Cycle (Kalina Cycle and Ejector Refrigeration Cycle)

Discussion

Member takes

Implication

Key Points

Cite This Study

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