Thermodynamic analysis of a Kalina-based combined cooling and power cycle driven by low-grade heat source

Cao, Liyan; Wang, Jiangfeng; Wang, Hongyang; Zhao, Pan; Dai, Yiping

doi:10.1016/j.applthermaleng.2016.09.088

Cited by 94 publications

(24 citation statements)

References 39 publications

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“…The maximum energy and exergy efficiencies achieved were 41.33% and 27.4%, respectively. These efficiencies are considerably higher than those reported by Cao et al 62 since an extra amount of refrigerant was produced in the flashing tank, which produces extra power without using extra energy supplied. From the thermo‐economic analysis, the authors found that the minimum production cost for the combined system was 19.44 $/GJ, which is lower than the values reported by Mahmoundi and Kordlar 60 .…”

Section: Hybrid Systems Integrated By Two Cyclescontrasting

confidence: 59%

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Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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Summary A comprehensive review of thermodynamic cycles for the simultaneous production of power and cooling is presented. The study not only actualizes the bibliographic reviews previously realized by other authors regarding cycles such as Kalina, Goswami, or modifications of them. This review additionally includes an overview of hybrid cycles and other novel cycles reported in the literature. The hybrid cycles included in the study are systems integrated by two or three conventional cycles, mainly composed of Brayton, Rankine, and ORC for power generation; and compression, absorption, and ejector cycles for cooling production. The other novel cycles mentioned are thermodynamic cycles, which considerably differ from all the others. By using internal rectification, the Goswami cycle increased its efficiency by about 5%; however, by adding diverse components, as a condenser and a subcooler, the efficiency was significantly improved due to the considerable increase of the cooling production. Organic Rankine cycles integrating absorption refrigeration cycles are, in general, the most efficient hybrid cycles, reaching thermal efficiencies close to 40% for the simultaneous production of power and cooling. If a third output was provided, as heating or water distillation, the energy efficiencies were as high as 90%. The main problem with these systems is that, in general, they are too complex and costly because of the considerable number of components. The highest exergy destruction values are reported in solar collectors when used, followed by boilers or generators, and absorbers. The lower production costs were reported with systems integrating a Brayton cycle, an organic Rankine cycle, and an ejector‐cooling cycle. The disadvantage of these systems is that they need high operating temperatures.

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Section: Hybrid Systems Integrated By Two Cyclescontrasting

confidence: 59%

“…The maximum energy efficiency obtained with the first configuration was 18.8%, while with the second configuration was 20.2%. Cao et al 62 proposed a cycle integrating a Kalina cycle and an ARC, as shown in Figure 13. The system was simulated using NH 3 ‐H 2 O.…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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“…The unfixed evaporation temperature is a feature of the zeotropic working fluid. The mixed working fluid of water and ammonia is used in Kalina cycle, which is a typical binary cycle [17][18][19][20][21][22]. A number of Kalina cycle systems were designed from the early1980s.…”

Section: Kalina Cyclementioning

confidence: 99%

Waste Heat Recovery from Aluminum Production

Guðjónsdóttir

Valdimarsson

et al. 2018

The Minerals, Metals &Amp; Materials Series

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Around half of the energy consumed in aluminum production is lost as waste heat. Approximately 30-45% of the total waste heat is carried away by the exhaust gas from the smelter which is the most easily accessible waste heat stream. Alcoa Fjardaal in east Iceland produces 350 000 tons annually, emitting the 110 °C exhaust gas with 88.1 MW of heat. This work concentrates on creating and comparing models of low-temperature energy utilization from the aluminum production. Three scenarios, including organic Rankine cycle (ORC) system for electric power production, heat supply system and combined heat and power (CHP) system, were proposed to recover waste heat from the exhaust gas. The electric power generation potential is estimated by ORC models. The maximum power output was found to be is 2.57 MW for an evaporation temperature of 61.22°C and R-123 as working fluid. 42.34 MW can be produced by the heat supply system with the same temperature drop of the exhaust gas in the ORC system. The heat requirement to supply heat to a district heating system for the local community can be fulfilled by the heat supply system. There is a potential opportunity for agriculture, snow melting and other industrial applications with the heat supply system. The CHP system is more comprehensive. 1.156 MW power and 23.55MW heating capacity can be produced by CHP system. The highest energy efficiency is achieved by the heat supply system and the maximum power output can be obtained with the ORC system. In the power generation system, the efficiency of organic Rankine cycle is significantly limited by the low temperature of the exhaust gas. It would be possible to improve the efficiency of the ORC by increasing the heat source temperature. The temperature of the heat source can be raised by reducing the dilution air from the environment into the pot. The heat balance of the smelter is studied. The positive result is found, that the efficiency of the cycle and power output are effectively improved, and a good trend of the system performance can be observed. The maximum 9.174 MW power can be produced at the exhaust gas temperature of 150 °C, and the system exergy efficiency of 54.38% can be achieved in these conditions. This work shows there is a good potential for heat and power production by recovering the waste heat from aluminum production. The efficiency of energy utilization in aluminum production can be effectively improved as studied.

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“…Said et al [17] experientially investigated a solar driven cogeneration system using an ammonia-water solution as a working fluid and achieved a COP of about 0.7 and 10 kW refrigeration capacity. Cao et al [18] comprehensively evaluated a combination of the KC and an ARC by applying a genetic algorithm to achieve the maximum exergy efficiency. Seckin [19] investigated a power/cooling cogeneration cycle which combined KC and ejector refrigeration cycles.…”

Section: Introductionmentioning

confidence: 99%

Energy and Cost Analysis and Optimization of a Geothermal-Based Cogeneration Cycle Using an Ammonia-Water Solution: Thermodynamic and Thermoeconomic Viewpoints

Javanshir

Kordlar

et al. 2020

Sustainability

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A cogeneration cycle for electric power and refrigeration, using an ammonia-water solution as a working fluid and the geothermal hot water as a heat source, is proposed and investigated. The system is a combination of a modified Kalina cycle (KC) which produces power and an absorption refrigeration cycle (ARC) that generates cooling. Geothermal water is supplied to both the KC boiler and the ARC generator. The system is analyzed from thermodynamic and economic viewpoints, utilizing Engineering Equation Solver (EES) software. In addition, a parametric study is carried out to evaluate the effects of decision parameters on the cycle performance. Furthermore, the system performance is optimized for either maximizing the exergy efficiency (EOD case) or minimizing the total product unit cost (COD case). In the EOD case the exergy efficiency and total product unit cost, respectively, are calculated as 34.7% and 15.8$/GJ. In the COD case the exergy efficiency and total product unit cost are calculated as 29.8% and 15.0$/GJ. In this case, the cooling unit cost, c p , c o o l i n g , and power unit cost, c p , p o w e r , are achieved as 3.9 and 11.1$/GJ. These values are 20.4% and 13.2% less than those obtained when the two products are produced separately by the ARC and KC, respectively. The thermoeconomic analysis identifies the more important components, such as the turbine and absorbers, for modification to improve the cost-effectiveness of the system.

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Thermodynamic analysis of a Kalina-based combined cooling and power cycle driven by low-grade heat source

Cited by 94 publications

References 39 publications

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Waste Heat Recovery from Aluminum Production

Energy and Cost Analysis and Optimization of a Geothermal-Based Cogeneration Cycle Using an Ammonia-Water Solution: Thermodynamic and Thermoeconomic Viewpoints

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