A review on productivity enhancement of solar still by application of PCM and nano enhanced PCM

Agrawal, Rahul; Singh, Krishna Deo Prasad

doi:10.1063/5.0050018

Cited by 16 publications

(5 citation statements)

References 32 publications

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“…Where (L) is the latent evaporation heat of less than 70 C o and is given by the equation (10) [13]. 𝐿 = 2.4935 × 10 6 [1 − 9.4779 × 10 −4 𝑇 + 1.3132 × 10 −7 𝑇 2 − 4.7947 × 10 −9 𝑇 3 ]------ (10) The hourly distillation output per square meter can be obtained from the solar distiller by equation (11) [ 13 ].…”

Section: B Radiation Heat Transfermentioning

confidence: 99%

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Study of the impact of variable-phase materials (PCM) on the single basin two-slop solar distiller

Ibrahim¹,

Kareem²

2023

Tikrit J. Pure Sci.

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The potable water declined after the global climate crisis. Due to global warming. River levels have also decreased. Moreover, so much has become dependent on the water from the wells. Which are often salty. Purifying this water often requires many fossil fuels that cause damage to the environment. Therefore, the researchers turned to renewable energy sources, including solar energy. In this paper, we designed and made a solar distiller, a single sink with a double slope. It is used to desalinate water and remove salt from water using solar energy. This technique is the best solution for obtaining water in remote and desert areas where potable water is not available. The purpose of the research is to study variables that promote increased efficiency. Study the use of phase change materials (PCM) to enhance the productivity of solar distillers. Bitumen was used to store solar thermal energy in latent heat. It has increased efficiency by (15–25%). For the distiller using bitumen in the basin relative to the distiller to which it is not added.

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Section: B Radiation Heat Transfermentioning

confidence: 99%

“…The results proved that the temperature in the solar assembly tube with PCM was 65.45-128.75 C o higher than the temperature without additives. [11]. Three solar desalination systems were used for water.…”

Section: Introductionmentioning

confidence: 99%

Study of the impact of variable-phase materials (PCM) on the single basin two-slop solar distiller

Ibrahim¹,

Kareem²

2023

Tikrit J. Pure Sci.

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“…Many studies have already been conducted to enhance the supply of fresh water from solar stills by making various design changes, such as dual slope solar stills [8], pyramid-type SS [9], stepped solar SS [10], SS with evacuated tubes [11], SS with thermoelectric modules, SS with reflectors and PV modules [12], adding fins to the basin liners, incorporating PCM [13], and nano-enhanced PCM. PCM, which has been the focus of numerous studies, has proven to be a reliable and efficient method for storing substantial heat quantities during the phase transition process [14]. Additionally, the research indicates that PCM materials possess the ability to capture and release significant amounts of latent heat during the phase transition period [15].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the performance of double-slope solar still using nano-enhanced eutectic phase change materials and steel wool fibre as wick material

Gupta,

Solanki

2024

J Braz. Soc. Mech. Sci. Eng.

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Energy storage in the form of sensible and latent heat is one of the prominent method to enhance the performance of any solar thermal system. Solar desalination is the viable method to convert the saline water into potable water but due to its lower yield, it can not be used as regular source of water. The current investigation deals with the enhancement in water yield of double slope solar still by embedding eutectic phase change material (PCM) (Myristic acid + Stearic acid), nano enhanced PCM and wick material (steel wool fibre). Ag2O3 nanoparticles at concentrations of 1.5 wt% were mixed in eutectic PCM to increase the thermal conductivity of nano enhanced PCM. The energy and exergy analyses of four various modified cases namely; CSS (Still without PCM), DSS-1 (Still with eutectic PCM), DSS-2 (Still with eutectic PCM and Steel wool fibre) and DSS-3 (Still with nano enhanced eutectic PCM) was carried out in central India (23.24° N and 77.41° E). The findings reveals that the cumulative yields for CSS, DSS-1, DSS-2 and DSS-3 are around 1.82, 2.44, 3.40, and 4.22 kg/m 2 . Additionally, DSS-3 cumulative fresh water production was around 132, 72.9 and 24.1% greater than that of CSS, DSS-1, and DSS-2 respectively. The average energy efficiency of DSS-3 was 49%, which is greater than CSS (22.21%), DSS-1 (30.42 %) and DSS-2 (41%). The findings also depict that the combined impact of PCM and nanoparticles displays an average exergy efficiency of 12.2%, which is greater than CSS, DSS-1 and DSS-2 by 3.18, 5.47, and 11%, respectively.

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“…Phase change materials (PCMs) are materials that release or absorb sufficient heat energy during their phase change to provide useable cooling or heat. The utilizing of PCMs in TES systems as functional materials has attracted researchers interest for their sensible heat (SH) and latent heat (LH) and for their thermal properties such as, melting temperature (Tm) within the temperature range required for the operation, suitable latent heat (LH) of melting, high thermal stability, and durability [2,3]. Paraffin wax (PW) is one of the most important organic PCMs, which consists of a straight chain of hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties Investigation of a Novel Phase Change Material Based on Nanocomposites of Paraffin Wax and Amorphous Nanosized TiO2

Elsad

Atwa

Farag

et al. 2023

ERJ. Engineering Research Journal

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Energy transmission and storage are vital in modern applications, especially for photovoltaic thermal (PV/T) applications. One of the significant advancements employed in these applications is phase change materials (PCMs), which offers improved thermophysical characteristics. In this regard, embedded Paraffin wax (PW) and amorphous TiO2 (a-TiO2) nanoparticles (NPs) were prepared. The sonochemical hydrolysis method is used to produce a-TiO2 NPs. The embedded concentrations of a-TiO2 NPs in PW in this study are 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, and 0.5 wt%. The morphological features of synthesized a-TiO2 NPs as well as PW/a-TiO2 nanocomposites (NCs) were examined by field emission scanning electron microscope (FE-SEM). Differential scanning calorimeter (DSC) investigations were used to determine the viability of these materials for thermal storage by evaluating the effects of various a-TiO2 NP concentrations on the melting point (Tm), latent heat rate (SP), and latent heat of fusion (LH) of PW. PW/a-TiO2 NCs had LH and SP values that are higher than those found in pure PW samples. SP value increased with TiO2 content up to 0.25 weight percent before declining with additional contents. While LH was improved with TiO2 up to 0.15 wt% content and subsequently dropped for additional contents. LH and SP values for PW/a-TiO2 NCs were significantly improved compared to pure PW samples by 19.1% and 298.6%, respectively.

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A review on productivity enhancement of solar still by application of PCM and nano enhanced PCM

Cited by 16 publications

References 32 publications

Study of the impact of variable-phase materials (PCM) on the single basin two-slop solar distiller

Study of the impact of variable-phase materials (PCM) on the single basin two-slop solar distiller

Enhancing the performance of double-slope solar still using nano-enhanced eutectic phase change materials and steel wool fibre as wick material

Thermal Properties Investigation of a Novel Phase Change Material Based on Nanocomposites of Paraffin Wax and Amorphous Nanosized TiO2

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