Exergy analysis of a solar-assisted air-conditioning system: Case study in southern Spain

Rosiek, Sabina

doi:10.1016/j.applthermaleng.2018.10.132

Cited by 20 publications

(6 citation statements)

References 43 publications

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“…The authors, converging with Rosiek (2019), also emphasize the importance of a correct dimensioning and quality of the thermal storage tank for these adequate cooling conditions to occur.…”

Section: Methodsmentioning

confidence: 94%

“…Using a flat plate solar collector, the exergetic analysis made it possible to conclude that the heat supply temperatures in the generator, in the range of 70 ° C to 80 ° C, allowed better COP values. The author also highlights the use of thermal reservoirs as a primary factor for the correct delivery of this ideal temperature range (Rosiek, 2019).…”

Section: Methodsmentioning

confidence: 99%

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Qualitative review of thermoeconomic analyses in solar refrigeration systems applied to absorption chillers

Carneiro¹,

Almeida²,

Santos³

2023

CLCS

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The implementation of solar refrigeration in absorption chillers has been a topic widely researched in the scientific community in view of the search for compatibility of the thermal comfort standards required in the current century with the need to search for the consumption of sustainable energy sources in refrigeration equipment. Based on this scenario, this work aimed to conduct a qualitative literature review of thermoeconomic analyses in solar cooling systems applied to absorption chillers. As a result, a volume of research was obtained in three basic categories: energy and exergetic analyses in low capacity chillers, effect of the climate on the thermoeconomic performance of absorption systems by solar refrigeration and the implementation of cogeneration systems using solar energy as one of the sources.

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“…The authors, converging with Rosiek (2019), also emphasize the importance of a correct dimensioning and quality of the thermal storage tank for these adequate cooling conditions to occur.…”

Section: Methodsmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

Qualitative review of thermoeconomic analyses in solar refrigeration systems applied to absorption chillers

Carneiro¹,

Almeida²,

Santos³

2023

CLCS

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“…Different research have been done on performance of absorption cooling systems [11,12]. Rosiek [13] investigated experimentally the exergy and performance analysis of a solarpowered 70 kW single effect LiBr-H2O absorption cooling system with a traditional flat-plate solar collector in Spain. The results demonstrated that, the maximum performance (COP) obtained from the proposed system was 0.6 at hot water temperatures ranges between 70 to 80°C.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis on the performance of a hybrid absorption desalination-cooling system

NourEldeen,

Harby

2024

Journal of Advanced Engineering Trends

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The demand for new technologies due to the global energy shortage, water scarcity, and environmental issues have been a scientific worry and challenge all over the world nowadays. Conventional desalination and cooling systems consume a large amount of energy and harm the environment. In the actual study, performance of a proposed hybrid absorption-desalination cooling system (ABDCS) is investigated theoretically. The main advantage of this system is the ability to utilize effectively low-grade heat source to produce simultaneously both desalinated water and cooling effect. A mathematical MATLAB code is developed and validated to simulate the performance of the system. Results showed that, the maximum system COP is obtained at 85 o C driving heat source temperature. This makes the proposed system suitable for low-grade heat sources and heat recovery process, which can be easily obtained from low grade heat source. At this temperature, the obtained cooling effect is 346 kW, the coefficient of performance (COP) is 0.774, and 13.88 m 3 day -1 desalinated water production. Increasing heat source temperatures and cooling water temperatures increasing the STEC linearly from 754 to 806 kWh/m 3 and from 722 to 812 kWh/m 3 respectively along the range of temperatures tested. On the other, the STEC decreased from 814 to 716 kWh/m 3 with increasing in the chilled water.

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“…Eleven configurations of an LBAC/transcritical CO 2 compression-coupled system were designed and energy and exergy analysis were conducted individually [16]. Exergy analysis of a single effect LBAC with a flat-plate-collector array was conducted and the generator inlet temperature from 70 to 80 °C was recommended for achieving high exergetic efficiency [17]. Absorption chiller was integrated to make full use of the heat of the lean solution in a Kalina cycle before it enters the recuperator [18].…”

Section: Introductionmentioning

confidence: 99%

Absorption Chiller/Kalina Cycle Coupled System for Low-Grade Waste Heat Recovery in Hydrate-Based CO2 Capture Process: An Economic and Exergetic Study

Liu

Wang

Xie

2022

Int J Comput Intell Syst

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This study investigates a coupled system combined by a LiBr/H2O absorption refrigeration cycle and a Kalina cycle, to recover waste heat from a hydrate-based CO2 capture process. The optimal system operation has been obtained. Payback time, Return on investment, Net present value and Discounted cash flow rate of return are selected as the evaluation indicators for a comprehensive economic analysis. Cash flow patterns are obtained for different discounted interest rates and electricity prices. Exergy analysis is conducted and the exergy loss of each component is calculated. Results show that in comparison with the individual Kalina cycle, the net electricity generation is increased by around 45%. The highest thermal efficiency of this coupled system is 16.78%. Payment balance can be achieved with a payback time of 6 years. The purchase price of heat exchanger occupies the largest capital investment. Exergy efficiency of this system is obtained as 36.89%. Major system irreversibility occurs in heat transfer processes of heat exchangers and the largest exergy loss is found in generators of both subcycles. Reducing the heat transfer irreversibility and the size of heat exchangers are greatly encouraged in future efforts.

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Exergy analysis of a solar-assisted air-conditioning system: Case study in southern Spain

Cited by 20 publications

References 43 publications

Qualitative review of thermoeconomic analyses in solar refrigeration systems applied to absorption chillers

Qualitative review of thermoeconomic analyses in solar refrigeration systems applied to absorption chillers

Parametric analysis on the performance of a hybrid absorption desalination-cooling system

Absorption Chiller/Kalina Cycle Coupled System for Low-Grade Waste Heat Recovery in Hydrate-Based CO2 Capture Process: An Economic and Exergetic Study

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