Solar distillation using three different phase change materials stored in a copper cylinder

Sonker, Varun Kumar; Chakraborty, Jyoti Prasad; Sarkar, Arnab; Singh, Rishikesh Kumar

doi:10.1016/j.egyr.2019.10.023

Cited by 50 publications

(22 citation statements)

References 41 publications

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“…These results prove the high conductivity of copper nanoparticles. 13,53 To detect the thermal reliability of the prepared Cu/PEG/TiO 2 porous composite PCM, a thermal cycling test of 50 cycles was performed ( Figure S3 and Figure 10). Figure S3 shows SEM and TEM images of the Cu/PEG/TiO 2 porous composite PCM before and after 50 cycles.…”

Section: Thermal Conductivity and Thermal Stability Of The Porous Cmentioning

confidence: 99%

“…[8][9][10] However, organic PCMs still have several drawbacks such as leakage above normal melting temperatures, low thermal conductivity, and weak interfacial combination, which restrict large-scale applications of these PCMs in latent heat storage. [11][12][13] Composite PCMs were proposed by integrating PCMs into a variety of inorganic or organic supporting materials. This approach not only prevents the leakage and diffusion of PCMs, but it also enhances latent heat storage capabilities and thermal performance.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

et al. 2019

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Summary A composite phase change material (PCM) of copper‐doped polyethylene glycol (PEG) 2000 impregnated urchin‐like porous titanium dioxide (TiO2) microspheres (PEG/TiO2) was successfully synthesised. The urchin‐like porous TiO2 structures contain hollow cavities that can provide a high PEG loading capacity of up to 80 wt%. Copper nanoparticles were uniformly dispersed on the outer and inner surfaces of the 0.8PEG/TiO2 as additives to enhance the thermal conductivity of the composite PCM. The latent heat of the Cu/PEG/TiO2 porous composite PCM reached 133.8 J/g, and the thermal conductivity was 0.58 W/(mK), which was 152.2% higher than that of TiO2 and 38.1% higher than 0.8PEG/TiO2. Moreover, the Cu/PEG/TiO2 porous composite PCM has excellent thermal stability and reliability.

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Section: Thermal Conductivity and Thermal Stability Of The Porous Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

et al. 2019

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“…Because of its lower productivity, it is not popularly used. Numbers of works are undertaken to improve the productivity and efficiency of the solar still [2,4].…”

Section: Introductionmentioning

confidence: 99%

“…Solar distillation differs from other forms of desalination that are more energyintensive, such as methods such as reverse osmosis, or simply boiling water due to its use of free energy. A very common and, by far, the most significant example of solar distillation is the natural water cycle that the Earth experiences [4].…”

Section: Introductionmentioning

confidence: 99%

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Water Desalination Using PCM to Store Solar Energy

Kulkarni¹

2020

Thermodynamics and Energy Engineering

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The rising water pollution levels and depleting freshwater sources have formed a delirious inverse proportionality for which the cause is human and effect is also on humanity. A possible solution to this problem is harnessing solar energy to engender thermal energy for solar distillation. Thus solar distillation is one of the potential solutions to asses both the ever-increasing demands for clean water and the inquisition for finding eco-friendly techniques to yield the water. This analysis was undertaken to discover the possible utilization of phase change material on solar distillation in double-slope solar still. The equipment that performs distillation is called "Solar Still." A phase change material (PCM) is a substance that either releases or absorbs energy comparable to the sensible heat during its phase transition to provide useful heat/cooling. Examples of PCM include phenol, paraffin, salt hydrate, and fatty acid. The experiment includes a blank distillate output without PCM, followed by possible optimization on the designed solar still. Solar distillation was performed in the improved solar still with varying types of PCMs. A theoretical model discerning the above phenomena and experiments were performed on the solar still. It was reported that for the yield maximum of water distillate with PCM (Phenol-5 cm) is 370 mL and without PCM is 345 mL, showing a 7.2% increase.

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Performance assessment of a passive solar still integrated with thermal energy storage and nanoparticle stored in copper cylinders

et al. 2020

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Summary In the present study, nanoparticle (CuO) has been dispersed in paraffin wax and stored in a copper cylinder to enhance the thermal conductivity and increase the total daily production of the solar distillation unit. Experiments have been performed for comparison between simple solar still (SSS), solar still with phase change material (SSPCM), and solar still with phase change material doped with nanoparticle (SSNPCM). The mixing of nanoparticle causes a paradigm shift of the thermophysical properties of phase change material (PCM). Nanoparticle and copper cylinder enhance the heat transfer rate with decreased duration of sensible heating, melting and solidification of PCM. Thermal analysis reveals that the evaporative mode of heat transfer has dominated heat transfer between glass cover and water. The maximum and average temperature for water basin and NPCM has been increased significantly for SSNPCM. The daily productivity of SSPCM and SSNPCM has been increased by 40.5% and 94.19% as compared to SSS. Based on the heat transfer rate, thermal conductivity, and daily productivity, SSNPCM can be considered not only as a better performing system as compared to SSS and SSPCM but also as a low cost disruptive technology in resource‐constrained settings where drinking water is really scarce.

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Solar distillation using three different phase change materials stored in a copper cylinder

Cited by 50 publications

References 41 publications

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

Water Desalination Using PCM to Store Solar Energy

Performance assessment of a passive solar still integrated with thermal energy storage and nanoparticle stored in copper cylinders

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