Design of an H2O-LiBr absorption system using PCMs and powered by automotive exhaust gas

Soliman, Ahmed Saad; Zhu, Shuping; Xu, Li; Dong, Junguo; Cheng, Ping

doi:10.1016/j.applthermaleng.2021.116881

Cited by 26 publications

(5 citation statements)

References 42 publications

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“…Soliman et al [123] designed an absorption cycle using phase change materials (PCM) fueled by automotive exhaust gases. This cycle features a counter plate generator with rectangular ribs and split cells, filled with multiple MCPs to store exhaust gas energy throughout the charging process in the diesel engine to run the cycle absorption.…”

Section: Models Proposed In the Literaturementioning

confidence: 99%

Diffusion Absorption Refrigeration Systems: An Overview of Thermal Mechanisms and Models

2023

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The energy transition, originating in the limitation of fossil resources and greenhouse gas (GHG) emission reduction, is the basis of many studies on renewable energies in different industrial applications. The diffusion absorption refrigeration machines are very promising insofar as they allow the use of renewable resources (solar, geothermal, waste gas, etc.). This technology is often considered an alternative to vapor compression systems in cooling and refrigeration applications. This paper aims to overview the thermal mechanisms related to modeling system energy sources and highlight the primary methodologies and techniques used. We study and analyze the technology’s current challenges and future directions and, finally, identify the gaps in the existing models to pave the way for future research. The paper also gives a classification of absorption refrigeration systems (ARS) to position and limit the scope of the study. The paper will help researchers who approach the various aspects to have a global synthetic analysis of the mechanisms characterizing the modeling of energy sources of absorption refrigeration machines.

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Section: Models Proposed In the Literaturementioning

confidence: 99%

Diffusion Absorption Refrigeration Systems: An Overview of Thermal Mechanisms and Models

2023

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“…The resistance (𝑅) between any two photocell layers (glass and EVA layer (𝑅 𝑔−𝐸𝑉𝐴 )), EVA and silicon layer (𝑅 𝑝𝑣−𝐸𝑉𝐴 ), and EVA and TPT layer ( 𝑅 𝑇𝑃𝑇−𝐸𝑉𝐴 ), and TPT and heat pipe evaporator (𝑅 𝑒𝑣−𝑇𝑃𝑇 ) is conduction resistance calculated by Eq. (10).…”

Section: Tpt Layermentioning

confidence: 99%

“…PCMs can transfer much heat during phase transitions, making them ideal for use in applications requiring large amounts of heat to be transferred. In addition to their use in air conditioning cycles [9][10][11], PCMs also used in recycling waste heat and thermal storage [12,13]. Recently, PCMs have witnessed much investigation in the field of solar power generation due to their high phase change enthalpy, ease of use, low cost, chemical stability, and usable phase transition temperature [14].…”

Section: Introductionmentioning

confidence: 99%

Impact of PCM type on photocell performance using heat pipe-PCM cooling system: A numerical study

Gad

Mahmoud

Hassan

2023

Journal of Energy Systems

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The effectiveness of a hybrid cooling system consisting of flat heat pipes (HP) and a heat sink of phase change material (PCM) for the temperature regulation of the photocell (PV) is studied. The system is mathematically modeled and numerically solved by using MatLab software. The impact of the type of PCM (RT25, RT35, and RT42) in summer on the performance of the hybrid photocell cooling system is analyzed. Results prove that the HP-PCM cooling system performs better than the natural photocell cooling. PCM with a low melting point is more efficient for electric performance than a high melting point. For a given PCM thickness of 4 cm, the maximum temperature of the photocell is reduced by 8.7 °C when PCM RT25 is used as a heat sink compared to 7.5 °C and 7.3 °C for RT35 and RT42, respectively. RT25-based PV/HP-PCM system outperformed a conventionally cooled photocell in terms of electrical efficiency by 5.3%. In comparison, RT35 and RT42 yield incremental gains of 5% and 4.5 %, respectively. As the PCM melting point is lowered, the hourly thermal efficiency increases with a peak of 48.9% for RT25, 33.7% for RT35, and 32.2% for RT42, respectively.

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“…Nowadays some researchers used PCMs for thermal energy storage. They increased of cooling system performance with latent heat storage methods (Harmen et al , 2021; Gürel, 2020; Nejad, 2020; Soliman et al , 2021; Rezaei et al , 2021; Jenifer et al , 2021; Oudina et al , 2021). In addition, PCMs have recently been used frequently in some research and special applications such as in battery (Putra et al , 2020; Heyhat et al , 2020; Joshy et al , 2020; Verma et al , 2019; Kong et al , 2020), in electronic cooling (Hu and Gong, 2021; Kalbasi, 2021; Gharbi et al , 2015; Kinkelin et al , 2017; Behi et al , 2017) and in convective heat transfer applications with different simulation methods (Akbal et al , 2021; Kousksou et al , 2014; Ben Salah and Ben Hamida, 2019; Lewis, 1987; Comini et al , 1974; Hamdeh et al , 2021; Selimefendigil and Öztop, 2020; Lewis et al , 2004; Nithiarasu et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis for thermal management of data center with phase change material

Öztop

Özgul

Selimefendigil

2022

HFF

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Purpose The purpose of this paper is to analyze the performance of a data center and thermal management by using phase change material (PCM). Numerical studies were conducted for two dimensional model of data center and installation of PCM at different locations. Design/methodology/approach Finite volume method was used for the unsteady problem, while impacts of air velocity and PCM location on the flow field, thermal pattern variations and phase change dynamics were evaluated. Three different locations of the PCM were considered while air velocity was also varied during the simulation. Thermal field variations and cooling performance of the system for different PCM location scenarios were compared. Findings It was observed that the installation of the PCM has significant impacts on the vortex formation, thermal field variation within the system and its performance. The left, right and top wall installation of the PCM changed the thermal patterns near the heat cell of the data centre. The phase change process is fast for the upper wall installation of the PCM, while the discrepancy of the melt fraction dynamics between different air flow at this position is minimum. The case where PCM placed in the upper wall at the highest air velocity is the best configuration in terms of heat storage. The utilization of PCM and changing its locations provide an excellent tool for thermal management and cooling performance of data centre. Originality/value Results of this study can be used for initial design and optimization of cooling systems for thermal management of data centers while the importance of the high-performance computing becomes very crucial for the advanced simulations in different technological applications.

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Design of an H2O-LiBr absorption system using PCMs and powered by automotive exhaust gas

Cited by 26 publications

References 42 publications

Diffusion Absorption Refrigeration Systems: An Overview of Thermal Mechanisms and Models

Diffusion Absorption Refrigeration Systems: An Overview of Thermal Mechanisms and Models

Impact of PCM type on photocell performance using heat pipe-PCM cooling system: A numerical study

Numerical analysis for thermal management of data center with phase change material

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