Parametric analysis on the experimental performance of an ammonia/water absorption cooling system built with plate heat exchangers

Jiménez‐García, J. Camilo; Rivera, W.

doi:10.1016/j.applthermaleng.2018.11.040

Cited by 28 publications

(14 citation statements)

References 32 publications

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“…To date, the use of PHEs to reduce the size (i.e., volume) of ammonia/water-based absorption chillers is limited. A few laboratory prototypes have been built using PHEs as the main components of the ammonia/water absorption chiller [49,50]. The prototype of a 5 kW single-effect ammonia/water chiller was developed using brazed PHEs for solar cooling applications [50].…”

Section: Ammonia-based Working Pairsmentioning

confidence: 99%

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New Developments and Progress in Absorption Chillers for Solar Cooling Applications

Ayou

Coronas

2020

Applied Sciences

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At present, novel, small-to-large capacity absorption chillers with unique technical features have emerged on the global market, and laboratory and pre-industrial prototypes have also been developed. These chillers have been designed for the efficient use of low-grade heat sources; some are air-cooled, small capacity systems; compact water/LiBr chillers; or solar-gas-fired single/double-effect chillers. Also, some advanced commercial absorption chillers have an extensive temperature glide in the driving heat stream (>30 K) which extracts approximately twice as much heat (~200%) as the single-effect chiller. This large temperature glide means that the chillers are well suited to solar thermal collector installations and district heating networks, and the extra driving heat increases cold production. Moreover, recent advances in R718 turbo compressor technologies have helped to solve the problems water/LiBr absorption chillers have in adapting to extreme operating conditions (e.g., high ambient temperature, >35 °C) by using a compressor-boosted absorption chiller configuration. This review paper presents and discusses the developments and progress in these absorption chiller technologies. In summary, the new absorption chillers may be useful for developing efficient, cost-effective, and robust solar cooling solutions that are needed to mitigate the unsustainable impact of the rising global demand for space cooling.

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Section: Ammonia-based Working Pairsmentioning

confidence: 99%

“…Another prototype of a single-effect ammonia/water chiller was built using commercially available Alfa Laval™ PHEs with its main components in vertical alignment [49]. The two types of stainless-steel plate heat exchangers used in this prototype were Alfanova 52 (40 plates) and Alfanova 27 (20 plates).…”

Section: Ammonia-based Working Pairsmentioning

confidence: 99%

New Developments and Progress in Absorption Chillers for Solar Cooling Applications

Ayou

Coronas

2020

Applied Sciences

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“…Exergy analysis is a meaningful approach for assessing the thermodynamic benefit of systems, which measures the utilization efficiency of the system's useful work by quantifying the exergy loss for every component within the system. 12 Jimeńez-Garci ́a et al 19 conducted an exergy analysis on an ammonia ARS and discovered that the system achieved a maximum exergy efficiency of 14.4%. Li et al 20 performed an exergy analysis on the mixed alcohol system, assessed the exergy performance of the system, and obtained the optimal configuration.…”

Section: ■ Introductionmentioning

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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“…The whole process efficiency directly affects the efficiency of the general vapor-liquid jet device working process. One of the ways to increase the efficiency of the vapor generation process in the primary flow nozzle is by profiling the walls of its diffuser part [13,14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Stand for Studying the Working Process in a Liquid-Vapor Jet Device with Replaceable Diffuser Parts

Sharapov

Husiev

Krmela

2022

JES

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The article describes the prospects for experimental research of liquid-vapor jet devices with adaptable geometry of the flow part of the primary flow nozzle. To formulate the research objectives, a critical analysis of state-of-the-art studies was conducted among native and foreign scientists studying two-phase jet devices. As a result, of the literature survey, we saw that the working process of the two-phase jet devices, which include liquid-vapor jet devices, is quite complicated to study. So, the achieved results of theoretical studies require clarification and the conduction of additional experimental studies. The article provides a description and experimental research method on the liquid-vapor jet devices with a replaceable diffuser part of the primary flow nozzle. The program and the method contain the range of changing operational parameters while conducting experimental studies. The functional scheme of the experimental scheme and the devices to control and measure pressure in the critical points of the scheme are proposed.

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Parametric analysis on the experimental performance of an ammonia/water absorption cooling system built with plate heat exchangers

Cited by 28 publications

References 32 publications

New Developments and Progress in Absorption Chillers for Solar Cooling Applications

New Developments and Progress in Absorption Chillers for Solar Cooling Applications

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

Experimental Stand for Studying the Working Process in a Liquid-Vapor Jet Device with Replaceable Diffuser Parts

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