Energy and exergy analysis of vapor compression–triple effect absorption cascade refrigeration system

Agarwal, Shyam; Arora, Akhi̇lesh; Arora, B.B.

doi:10.1016/j.jestch.2019.08.001

Cited by 18 publications

(10 citation statements)

References 26 publications

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“…Cimsit et al (Cimsit, 2018) made a thermodynamic analysis on a double-effect absorption compression cascade refrigeration and suggested that the components with high exergy destruction rates should be paid more attentions. Agarwal et al (Agarwal et al, 2020) investigated the influences of critical operating parameters of a triple-effect absorption cascade refrigeration on COP, exergy efficiency, exergy destruction rate, and exergy destruction ratio, and found that the system's refrigeration coefficient and exergy efficiency were higher than the single effect and double effect absorption-compression cascade refrigeration system. Faruque et al (Faruque et al, 2022) detailed a thermodynamic analysis of a triple effect cascade refrigeration system in ultra-low temperature application, and found that the highest COP and exergy efficiency was 0.5931% and 54.5% respectively when evaporating temperature was −100 °C.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and optimization of a novel cascade refrigeration system driven by waste heat

et al. 2023

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Direct discharge of waste heat from internal combustion engines (ICEs) is unfavorable for the efficient and clean fuel utilization. Here, a novel combined absorption-compression cascade refrigeration cycle is proposed to efficiently capture low-grade waste heat and supply cooling capacity for food freezing in vessels or refrigerated trucks. The intention of this work lies in: i) Comprehensively evaluating the performances of the proposed system; ii) Gaining the optimal operating conditions of the system. Aimed that, analysis models of energy, exergy, economy, and environment are set up to evaluate the sweeping performances. Further, multi-objective optimization is introduced to obtain the optimal operating parameters including evaporation and condensation temperature of the low-temperature stage, generation temperature and condensation temperature of the high-temperature stage, and cascade temperature differences. By applying multi-objective optimization, the coefficient of performance and exergy efficiency of the system are elevated from 1.283 to 1.547, and 0.222 to 0.246, respectively, the discharge amount of carbon dioxide are reduced from 71.40 to 59.57 tons year−1, and annual total cost are decreased from 16,028 to 15,055 $ year−1 compared to initial operating conditions.

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Section: Introductionmentioning

confidence: 99%

Evaluation and optimization of a novel cascade refrigeration system driven by waste heat

et al. 2023

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“…The results show that a COP enhancement of more than 200%, corresponding to evaporator and condenser temperatures of 6 C and 40 C respectively. Performance of triple effect compressor-absorption system was examined by Agarwal et al 21 The results of the analysis indicate that higher COP was attained in the triple effect hybrid cycle when compared to double effect hybrid cycle.…”

Section: Introductionmentioning

confidence: 99%

“…Performance of triple effect compressor-absorption system was examined by Agarwal et al. 21 The results of the analysis indicate that higher COP was attained in the triple effect hybrid cycle when compared to double effect hybrid cycle.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of triple effect ammonia–water absorption compression (hybrid) cycle

Jawahar

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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This paper presents the energy analysis of a triple effect absorption compression (hybrid) cycle employing ammonia water as working fluid. The performance parameters such as cooling capacity and coefficient of performance of the hybrid cycle is analyzed by varying the temperature of evaporator from −10 °C to 10 °C, absorber and condenser temperatures in first stage from 25 °C to 45 °C, degassing width in both the stages from 0.02 to 0.12 and is compared with the conventional triple effect absorption cycle. The results of the analysis show that the maximum cooling capacity attained in the hybrid cycle is 472.3 kW, at 10 °C evaporator temperature and first stage degassing width of 0.12. The coefficient of performance of the hybrid cycle is about 30 to 65% more than the coefficient of performance of conventional triple effect cycle.

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“…An integrated system, which combines a VCRS with a VARS, merges the advantages of both standalone systems, resulting in a cost-effective refrigeration system [ 20 , 21 ]. In a combined VCR-VAR system—CVCARS—the electrical power required in VCRS and the heat energy required in VARS can be significantly reduced.…”

Section: Introductionmentioning

confidence: 99%

“…There are many publications addressing exergy and exergoeconomic analyses of combined VCR–VAR systems that use different mixtures for the absorption cycle (e.g., H 2 O-LiBr and NH 3 -H 2 O) and different working fluids for the compression cycle (e.g., R22, R134a, R717, and R1234yf) [ 20 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. Agarwal et al [ 20 ] analyzed an absorption-compression cascade refrigeration system (ACCRS) by combining a series flow triple-effect H 2 O-LiBr VARS with a single VCRS operated with R1234yf. High-pressure generator, evaporator, and absorber temperature values ranging between 448.15 and 473.15 K, 223.15 and 263.15 K, and 298.15–313.15 K, respectively, were considered.…”

Section: Introductionmentioning

confidence: 99%

Superstructure-Based Optimization of Vapor Compression-Absorption Cascade Refrigeration Systems

Mussati

Morosuk

Mussati

2020

Entropy

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A system that combines a vapor compression refrigeration system (VCRS) with a vapor absorption refrigeration system (VARS) merges the advantages of both processes, resulting in a more cost-effective system. In such a cascade system, the electrical power for VCRS and the heat energy for VARS can be significantly reduced, resulting in a coefficient of performance (COP) value higher than the value of each system operating in standalone mode. A previously developed optimization model of a series flow double-effect H2O-LiBr VARS is extended to a superstructure-based optimization model to embed several possible configurations. This model is coupled to an R134a VCRS model. The problem consists in finding the optimal configuration of the cascade system and the sizes and operating conditions of all system components that minimize the total heat transfer area of the system, while satisfying given design specifications (evaporator temperature and refrigeration capacity of −17.0 °C and 50.0 kW, respectively), and using steam at 130 °C, by applying mathematical programming methods. The obtained configuration is different from those reported for combinations of double-effect H2O-LiBr VAR and VCR systems. The obtained optimal configuration is compared to the available data. The obtained total heat transfer area is around 7.3% smaller than that of the reference case.

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Energy and exergy analysis of vapor compression–triple effect absorption cascade refrigeration system

Cited by 18 publications

References 26 publications

Evaluation and optimization of a novel cascade refrigeration system driven by waste heat

Evaluation and optimization of a novel cascade refrigeration system driven by waste heat

Thermodynamic analysis of triple effect ammonia–water absorption compression (hybrid) cycle

Superstructure-Based Optimization of Vapor Compression-Absorption Cascade Refrigeration Systems

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