Thermodynamic analyses of an innovative system combined dehumidification, cooling and heating driven by solar energy

Xu, Aixiang; Wang, Yizhang; Song, Tingting; Xie, Nan; Liu, Zhiqiang; Yang, Sheng

doi:10.1016/j.enconman.2023.116757

Cited by 12 publications

(10 citation statements)

References 40 publications

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“…For the STS, the heat transfer oil (HTO) is used to store the thermal energy from sunlight, whose temperature can increase from 80 to 250 °C . LiCl-H 2 O and LiBr-H 2 O are applied as the working pair for LDS and ARS, respectively …”

Section: Methodsmentioning

confidence: 99%

“…The higher values of Ė D , tot AV , Ċ D , tot AV , and Ż tot AV indicate the larger improvement potential for the proposed system . Therefore, sensitivity analysis of key parameters including air humidity, segment temperature, and refrigeration temperature , is conducted to determine the effects on the different parts of the exergy destruction and cost rates of the proposed system.…”

Section: Parametric Sensitivity Analysismentioning

confidence: 99%

“…31 LiCl-H 2 O and LiBr-H 2 O are applied as the working pair for LDS and ARS, respectively. 32 In the STS, the compound parabolic concentrator is applied to gather solar energy, and the heat storage tank (HST) is used to store the energy from CPC and provide a stable heat source to the LDS and ARS. By designing the segment temperature of stream A2, 14 the HTO with high temperature flows into the regenerator of the liquid desiccant (A1) to meet the heat duty of LDS (Q H ).…”

Section: ■ Introductionmentioning

confidence: 99%

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Modeling and Optimization of a Solar-Driven System Coupled with Liquid Dehumidification and Absorption Refrigeration Based on Advanced Exergy and Exergoeconomic Analyses

Wang

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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A novel hybrid system coupled liquid dehumidification with absorption refrigeration driven by solar energy is proposed. Traditional and advanced exergy and exergoeconomic analyses of the system are conducted to ascertain the degree of irreversibility and potential improvement for each component. Based on the advanced exergy and exergoeconomic analyses, the effects of air humidity, segment temperature, and refrigeration temperature on the total exergy destruction and cost rates of the system are obtained. The total avoidable exergy destruction rate, avoidable exergy destruction cost rate, and avoidable investment cost rate of the system are selected as objective functions and optimized by using nondominated sort genetic algorithm-II. The results show that the total exergy destruction rate and the total exergy destruction cost rate reach 262.39 kW and 8.563 $/h, respectively. The generator and regenerator have higher cost rates of the irreversibility overall system, achieving the values 3.536 and 2.430 $/h, respectively. The absorber has the highest investment cost rate in the whole system. The endogenous parts of the exergy destruction and cost rates are much higher than the exogenous parts in the system. Multiobjective optimization results show that optimal values for the total avoidable exergy destruction rate and the exergy destruction cost rate are 50.99 kW and 1.60 $/h, which are 4.15 and 9.14% lower than those calculated by single-objective optimization, respectively. This study provides a potential way to utilize solar energy for dehumidification and refrigeration.

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Section: Methodsmentioning

confidence: 99%

Section: Parametric Sensitivity Analysismentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Modeling and Optimization of a Solar-Driven System Coupled with Liquid Dehumidification and Absorption Refrigeration Based on Advanced Exergy and Exergoeconomic Analyses

Wang

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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“…This system consists of three sections: solar collector system (SCS), LDS, and ARS. Among them, heat conduction oil (HCO) is the operating solution of SCS, lithium chloride solution is the operating solution of LDS, and lithium bromide solution is the operating solution of ARS . SCS utilizes CPC and heat storage tank (HST) to collect and store solar energy, providing a source of heat for LDS and ARS.…”

Section: System Description and Simulationmentioning

confidence: 99%

“…The proposed system realizes the cascade application of solar energy. The specific operation principles of system are elaborated in detail in reference …”

Section: System Description and Simulationmentioning

confidence: 99%

Evaluation and Optimization of an Integrated Refrigeration and Dehumidification Process for Solar Energy Cascade Utilization Based on Exergy, Exergoeconomic, and Exergoenvironmental Analyses

Xu,

Luo,

Zeng

et al. 2024

ACS Sustainable Chem. Eng.

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In this work, an innovative solar-powered integrated system coupling absorption refrigeration with liquid dehumidification is proposed. This system can effectively achieve the cascade utilization of solar energy. The exergy, exergoeconomic, and exergoenvironmental analyses are conducted to evaluate the techno-economics and environmental benefits of the proposed system. A parametric study is performed to determine the effect of air humidity, refrigeration temperature, and segment temperature on the total exergy destruction (ExḊ , total ), exergy efficiency (ε ex ), total exergoeconomic cost rate (R ̇total ), and total exergo-environmental impact rate (B ̇total ) of the system. Three objective functions, ε ex , R ̇total , and B ̇total are selected for multiobjective optimization (MOO). The results indicate that the ExḊ , total , ε ex , R ̇total , and B ̇total of the system are 516.584 kW, 43.176%, 59.171 $/h, and 2307.216 mPts/h, respectively. When the air humidity increases, the exergy efficiency, economy, and environmental benefits of the system all decrease. The increase in refrigeration temperature causes the ExḊ , total and B ̇total to increase by 9.85 and 5.02%, ε ex and R ̇total decreased by 11.42 and 3.03%. The system has a higher exergy efficiency at a higher segment temperature. According to the system MOO results, the optimal solutions for ε ex , R ̇total , and B ̇total are 44.88%, 57.24 $/h, and 2281.77 mPts/h, respectively. Among them, ε ex has increased by 3.80% compared to the original solution, and R ̇total and B ̇total have decreased by 3.26 and 1.10%, respectively. This work provides a reference scheme for the development and optimization of solar-integrated systems.

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Integrated life cycle assessment and emergy analysis of liquid dehumidification absorption refrigeration driven by solar energy

Xu,

Luo,

Song

et al. 2024

Applied Thermal Engineering

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Thermodynamic analyses of an innovative system combined dehumidification, cooling and heating driven by solar energy

Cited by 12 publications

References 40 publications

Modeling and Optimization of a Solar-Driven System Coupled with Liquid Dehumidification and Absorption Refrigeration Based on Advanced Exergy and Exergoeconomic Analyses

Modeling and Optimization of a Solar-Driven System Coupled with Liquid Dehumidification and Absorption Refrigeration Based on Advanced Exergy and Exergoeconomic Analyses

Evaluation and Optimization of an Integrated Refrigeration and Dehumidification Process for Solar Energy Cascade Utilization Based on Exergy, Exergoeconomic, and Exergoenvironmental Analyses

Integrated life cycle assessment and emergy analysis of liquid dehumidification absorption refrigeration driven by solar energy

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