Nanoparticles enhanced phase change materials (NePCMs)-A recent review

Tariq, Syeda Laraib; Ali, Hafız Muhammad; Akram, Muhammad Ammar; Janjua, Muhammad Mansoor; Ahmadlouydarab, Majid

doi:10.1016/j.applthermaleng.2020.115305

Cited by 251 publications

(66 citation statements)

References 128 publications

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“…The range of volume fraction of nanoparticles (0-20%) is chosen based on the past NEPCM published articles, e.g., [33][34][35][36][37][38][39][40][41]. Twenty percent is the maximum percentage of nanoparticles' volume fraction that has been dispersed into the base fluid to prepare a NEPCM thus far [39][40][41]. The variation of the liquid fraction with operating time at various volume fractions of the NEPCM containing Cu nanoparticles is represented in Figure 9.…”

Section: Impact Of Nano-enhanced Phase Change Materials Volume Fractiomentioning

confidence: 99%

“…However, based on the previous works concerning NEPCMs [39][40][41] and to the best of the authors' knowledge, to this day, no scholar has studied the application of NEPCMs as backfill in the BHE which indicates the significance of this study. Therefore, the novelty of the present article is the numerical simulation of NEPCMs in a single U-tube BHE.…”

Section: Introductionmentioning

confidence: 97%

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Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

et al. 2020

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To investigate the impacts of using nano-enhanced phase change materials on the thermal performance of a borehole heat exchanger in the summer season, a three-dimensional numerical model of a borehole heat exchanger is created in the present work. Seven nanoparticles including Cu, CuO, Al2O3, TiO2, SiO2, multi-wall carbon nanotube, and graphene are added to the Paraffin. Considering the highest melting rate and lowest outlet temperature, the selected nano-enhanced phase change material is evaluated in terms of volume fraction (0.05, 0.10, 0.15, 0.20) and then the shape (sphere, brick, cylinder, platelet, blade) of its nanoparticles. Based on the results, the Paraffin containing Cu and SiO2 nanoparticles are found to be the best and worst ones in thermal performance improvement, respectively. Moreover, it is indicated that the increase in the volume fraction of Cu nanoparticles could enhance markedly the melting rate, being 0.20 the most favorable value which increased up to 55% the thermal conductivity of the nano-enhanced phase change material compared to the pure phase change material. Furthermore, the blade shape is by far the most appropriate shape of the Cu nanoparticles by considering about 85% melting of the nano-enhanced phase change material.

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Section: Impact Of Nano-enhanced Phase Change Materials Volume Fractiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

et al. 2020

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“…Thus, advanced project management methods and tools had been continuously applied to project management practice, such as Delphi method (Ayhan and Tokdemir 2018), artificial neural networks (Leśniak and Juszczyk 2018), Monte Carlo methods (Ouyang and Chen 2019) and fuzzy synthetic evaluation (Ameyaw and Chan 2015). In addition, emerging engineering materials (e.g., the phase change materials) have been used in most common engineering applications such as thermal energy storage and thermal comfort in modern buildings for the purpose of cost saving and eliminating the air pollution (Laraib Tariq et al 2020). Similarly, nanofluids (Ahmadlouydarab, Ebadolahzadeh, and Ali 2020;Ahmadi et al 2020) and air cooling technique (Murugan et al 2020) have been also proposed and adopted to improve the performance of buildings.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Examining the impact of relationship-related and process-related factors on project success: the paradigm of Stimulus-Organism-Response

Yin

2020

Journal of Asian Architecture and Building Engineering

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Adopting the Stimulus-Organism-Response paradigm, this paper investigates how relationship-related factors (asymmetric dependence and trust) and process-related factors (communication and coordination) influence project success. Data gathered from 173 respondents with electronic questionnaire were analyzed by Smart-PLS 3.0 software and PROCESS. The results demonstrate that project success is influenced by the relationship-related factors (asymmetric dependence and trust) between partners. Project-related factors, namely communication and coordination make the mechanism of project success more complicated. Moreover, the configuration of project control rights does not moderate the relationships among the relationship-related factors, process-related factors and project success. These findings contribute to the literature by showing the factors leading to project success and extend the literature in the domain of construction project management by presenting a Stimulus-Organism-Response paradigm and multiple serial meditations.

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“…8 LHS has almost isothermal condition during phase change but it is difficult to produce uniformity of the output temperature. 9 There have been several studies related to enhancing the efficiency of PCM units including geometry modification and inclination angle, 10,11 adding nanoparticles, [12][13][14][15][16] adding fins, [17][18][19] adding metal foam, 20,21 using a suspension encapsulated PCM, 22,23 and integrating with heat pipes. 24 There are also some investigations, which used the magnetic field to control the phase change heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Effect of airflow channel arrangement on the discharge of a composite metal foam‐phase change material heat exchanger

et al. 2020

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Summary The effect of various arrangements of airflow channel in a proposed storage heater based on copper foam soaked in a phase change material (PCM) is investigated. Different configurations of the air channel using a serpentine channel, as well as numbers of the air channels, are examined in a representative three‐dimensional computer‐based model (Ansys Fluent). Evaluation is performed by PCM discharging rate and output air temperature of the unit. The goal is to improve both uniformity and value of air temperature. Changing the airflow arrangement using serpentine configuration to increase heat exchange surface area reduces solidification time and increases output maximum air temperature as well as pressure drop; conversely, exit air achieves lower temperature uniformity. In the case of the shortest solidification time using one air‐channel with the length of 51 cm, the solidification time reduces to almost 6 hours, compared with 13.6 hours for the straight channel with 37 cm length, with the average output temperature of 56°C compared to 41°C for the straight channel; however, the achieved temperature difference from the initial to the end of solidification time is 13.7°C compared to 4.5°C for the straight tube.

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Nanoparticles enhanced phase change materials (NePCMs)-A recent review

Cited by 251 publications

References 128 publications

Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

Examining the impact of relationship-related and process-related factors on project success: the paradigm of Stimulus-Organism-Response

Effect of airflow channel arrangement on the discharge of a composite metal foam‐phase change material heat exchanger

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