Enhanced solar steam generation using carbon nanotube membrane distillation device with heat localization

Miao, Endong; Ye, Meng-Qi; Guo, Fei; Liang, Lin; Liu, Qi; Rao, Zhonghao

doi:10.1016/j.applthermaleng.2018.12.123

Cited by 108 publications

(38 citation statements)

References 34 publications

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“…This provides an opportunity to expand desalination in a low-cost way [6,14,88]. In order to achieve large-scale desalination of salt water, many devices have been developed, which are based on a single basin and consist of monoclinic cover, cone-shaped, quasi semi spherical, house model and pyramid prototype [27,34,35,66,69].…”

Section: Hybrid Devicesmentioning

confidence: 99%

Solar-thermal conversion and steam generation: a review

Shi

Wang

et al. 2020

Applied Thermal Engineering

127

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Highlights  Solar absorbed materials and their photo-thermal conversion mechanism are reviewed.  The evaluation principle of photo-thermal conversion process are investigated.  Different solar absorbed evaporation methods and system are summarized.  The prospects and challenges of photo-thermal conversion and steam generation are discussed Abstract: Recently, steam generation systems based on solar-thermal conversion have received much interest, and this may be due to the widespread use of solar energy and water sources such as oceans and lakes. The photo-thermal desalination system becomes attractive as it can convert absorbed solar light energy into thermal energy and realise the desalination and water purification of saline water through the evaporation process. In this paper, the research status of solar-thermal conversion materials such as metal-based materials, semiconductor materials, carbon-base materials, organic polymer materials, composite photo-thermal materials and their solar-thermal conversion mechanism in recent years are reviewed. The physical process and evaluation principle of solar-thermal conversion are both carefully introduced. The methods of optimising thermal management and increasing the evaporation rate of a hybrid system are also introduced in detail. Four main applications of solar-thermal conversion technologies (seawater desalination, wastewater purification, sterilisation and power generation) are discussed. Finally, based on the above analysis, the prospects and challenges for future research in the field of desalination are discussed from an engineering and scientific viewpoint to promote the direction of research, in order to stimulate future development and accelerate commercial application.

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Section: Hybrid Devicesmentioning

confidence: 99%

Solar-thermal conversion and steam generation: a review

Shi

Wang

et al. 2020

Applied Thermal Engineering

127

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“…Recently, the floating structure has attracted sweeping attention from researchers worldwide due to its effective thermal aggregation properties at the evaporation interface [10][11][12]. Miao et al [13] developed a simplified solar evaporation system using floating structure with carbon nanotubes membrane as a light absorber and aerogel blanket as a thermally insulating layer, which attained a high evaporation efficiency of 84.6% at a light intensity of 1 kW m −2 . In this case, the most important part of solar evaporation system is the photo-thermal conversion material, which is directly related to harvesting solar energy, affecting the evaporation performance [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Green-synthesizing Ag nanoparticles by watermelon peel extract and their application in solar-driven interfacial evaporation for seawater desalination

Cao

Cui²,

Wang³

et al. 2020

Mater. Res. Express

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Ag nanoparticles displayed a more attractive application in solar-driven interfacial evaporation for seawater desalination, but their synthesis process was expensive and detrimental to the environment due to the consumption of chemicals. In this work, we green-synthesized Ag nanoparticles using watermelon peel extract as reducing agent, while the membrane with Ag nanoparticles was prepared for solar-driven interfacial evaporation. Moreover, the evaporation performance of the membranes with different Ag nanoparticles loadings was investigated, as well as the reusability and desalination application was also explored. The experimental results showed that the membrane with Ag nanoparticles loading of 0.05 g exhibited superior evaporation performance, corresponding to the evaporation rate of 1.37 kg m −2 h −1 and the evaporation efficiency of 89.3%, respectively. In addition, the membrane with Ag nanoparticles possessed an excellent recyclability and concentration of ions in the desalinated seawater reached the potable water standard. Our research demonstrated that Ag nanoparticles green-synthesized by watermelon peel extract was an ideal candidate applied in solardriven interfacial evaporation for seawater desalination.

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“…Hence, the development of renewable energy has attracted considerable attention 3,4 . Especially, solar energy is recognized as a potential candidate owing to its environment‐friendly nature 5‐7 . For this reason, many scholars have devoted extensive efforts to the development of solar energy utilization technologies 8‐10 .…”

Section: Introductionmentioning

confidence: 99%

Photo‐thermal conversion and heat storage characteristics of multi‐walled carbon nanotubes dispersed magnetic phase change microcapsules slurry

et al. 2020

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Summary The development of high‐efficient working fluids with excellent photo‐thermal conversion and heat storage properties is an important factor to solar thermal utilization. In this work, magnetic phase change microcapsules (MPCMs) were prepared via in situ polymerization, where melamine‐formaldehyde (MF) resin and octadecane containing oleic acid‐coated magnetic nanoparticles (OA‐MNs) were used as the shell and core, respectively. The microstructure, magnetic and thermal properties of MPCMs were investigated, and the photo‐thermal conversion and heat storage properties of slurries prepared by dispersing MPCMs into multi‐walled carbon nanotubes (MWCNTs) nanofluids were explored. The encapsulation efficiency of MPCMs with superparamagnetic nature achieved 63.51%, while the thermal conductivity of MPCMs was slightly increased with regard to phase change microcapsules (PCMs) and the thermal stability of octadecane was enhanced after being encapsulated. Moreover, the slurry with 0.01 wt% MWCNTs and 15 wt% MPCMs had the optimal photo‐thermal conversion properties and thermal storage capacity. Beyond that, the recycled MPCMs represented excellent recyclability. Our research demonstrated that the MWCNTs‐dispersed MPCMs slurry is one of ideal working fluids with excellent photo‐thermal conversion and heat storage characteristics for direct absorption solar collector.

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Enhanced solar steam generation using carbon nanotube membrane distillation device with heat localization

Cited by 108 publications

References 34 publications

Solar-thermal conversion and steam generation: a review

Solar-thermal conversion and steam generation: a review

Green-synthesizing Ag nanoparticles by watermelon peel extract and their application in solar-driven interfacial evaporation for seawater desalination

Photo‐thermal conversion and heat storage characteristics of multi‐walled carbon nanotubes dispersed magnetic phase change microcapsules slurry

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