Enhancing the fresh water produced from inclined cover stepped absorber solar still using wick and energy storage materials

Ramalingam, Vignesh Kumar; Karthick, Alagar; Jeyalekshmi, Manoj Praveen Vijayan; Decruz, Arul Marcel Moshi Antony Joseph; Manokar, A. Muthu; Sathyamurthy, Ravishankar

doi:10.1007/s11356-020-12030-1

Cited by 59 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, it was found that the capillary rise was about 5.8 mm/h. Also, the properties of luffa fibre are tabulated in Table 1 compared with other fibres available in the literature (Hansen et al 2015;Ramalingam et al 2021).…”

Section: Water Absorbencymentioning

confidence: 99%

Augmentation of freshwater productivity in single slope solar still using Luffa acutangula fibres

Suraparaju¹,

Natarajan²

2021

Water Science and Technology

View full text Add to dashboard Cite

The prime intention of the current research is to enhance the freshwater productivity of the solar still (SS) by using Luffa acutangula fibres (LAF). The dried LA fibres were introduced into the absorber basin of solar still to enhance the wet surface area through its porous structure that leads to augmented evaporation of water from the absorber basin. The effect of the number of LAF in absorber basin such as 10,13,14,15,16,20 and 25 on freshwater productivity was estimated. The results revealed that SSLAF with 15 fibres in the absorber basin increased the yield by 25.23%. Besides, solar still with 10,13,14,16,20 and 25 fibres in the absorber basin increased the yield by 12.27%, 17.45%, 22.04%, 22.69%, 14.64% and 4.09% respectively when compared to conventional solar still (CSS). The average thermal efficiency of the SSLAF with 15 LAF was increased by 28.35% whereas, for 10,13,14,16,20 and 25 LAF, the average thermal efficiency was increasedby 11.05%, 16.99%, 22.53%, 19.93%, 11.29% and 3.9% respectively when compared to CSS.The economic analysis resulted that the cost per litre freshwater yield from the SSLAF is 22.5% lower than CSS. Also, the payback period of SSLAF is comparatively lesser than that of CSS.

show abstract

Section: Water Absorbencymentioning

confidence: 99%

Augmentation of freshwater productivity in single slope solar still using Luffa acutangula fibres

Suraparaju¹,

Natarajan²

2021

Water Science and Technology

View full text Add to dashboard Cite

show abstract

“…20 Kumar et al 21 augmented the yield of a CSS by 51.22% using PCM. Ramalingam et al 22 found that the productivity of an inclined SSS could be increased by 144.5% with the help of ESM and wick. Mohammed et al 23 experimentally concluded that 4 kg of Rubitherm as ESM in solar still increased the distillate by 29.7%.…”

Section: Introductionmentioning

confidence: 99%

Comparative study on stepped solar distillers internally loaded with different masses of phase change material

Grewal

Kumar

2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary This experimental work discusses the thermo‐enviro‐economic analyses for effect of mass of paraffin wax as phase change material (PCM) on solar distillation in inclined stepped solar still (SSS). Three identically designed SSS units, namely, S1, S2, and S3 respectively, laden with 0.45, 0.90, and 1.35 kg of PCM filled in copper tubes are fabricated and tested at 25 mL/min flow rate. The findings of the experimental study manifested that the performance of SSS unit is significantly improved as the mass of the PCM is increased. The amount of distillate produced by units S1, S2, and S3 are respectively, 1.99, 2.12, and 2.18 kg. The distillate obtained from S3 unit is 8.4% and 2.6% more than S1 and S2 units, respectively. The average values of energy and exergy efficiencies of this unit are evaluated as 31.53% and 2.15%, respectively. This unit is capable to mitigate 8.28 t of CO2 per year which is 7.6% and 2.1% higher than that of units S1 and S2, respectively. Carbon credit earned by units S1, S2 and S3 are respectively, $114.78, $121.58, and $124.23. The carbon credit earned from S3 unit is the highest among tested units which inferred that unit S3 is environmentally friendlier. The total productive cost of environmentally and thermally supreme unit S3 is evaluated as $0.30 which is 6.67% and 3.34% higher than that of S1 and S2 units, respectively. The study shows that the use of PCM in solar distillation has the potential to improve its productivity which helps to eradicate the scarcity of potable water. Highlights The effect of mass of paraffin wax loading on the performance of stepped solar still is presented. Thermo‐enviro‐economic performance of system is observed to improve with increase in mass of paraffin wax loading. The system loaded with 1.35 kg paraffin wax is found best in environmental conservation and can mitigate 8.28 t CO2 per year. The total productive cost per day of the unit having maximum mass of paraffin wax is $0.30.

show abstract

“…The hourly yield of fresh water was increased by 43.1% in the passive mode and 34.3% in the active mode. Ramalingam et al 26 attempted to improve fresh water production in the inclined stepped solar still using a wick and an energy storage material. The capillary effect in he wick material increases the maximum fresh water production rate by 30.6%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Productivity Enhancement of a Solar Still Modified with the Evacuated Tube Heat Pipe using Paraffin Wax

Vijay¹,

Kumaresan²,

Vijayakumar³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The current work involves experimental investigation on a conventional solar still to improve the productivity of fresh water by introducing the evacuated tube thermosyphon heat pipe. The evacuated tube thermosyphon acts as additional heat source to the solar still. The paraffin wax was utilized as latent heat storing medium, filled between the evacuated glass tube and thermosyphon heat pipe to escalate the fresh water productivity during off-sunshine hours. Two identical solar stills, one with three evacuated tube thermosyphon and another without it, were constructed and tested simultaneously. The solar radiation intensity, volume of fresh water produced, and temperature at various points such as basin water, glass cover, ambient and evaporator and condenser section of the heat pipe were measured. The utilization of evacuated tube heat pipe as an additional heat source increases heat input by 84.5%. The increase in heat input upsurges the gathering of fresh water by more than three times when compared to the conventional solar still. Accumulative fresh water productivity from the modified solar still was 215.7% higher than fresh water productivity from the conventional solar still. The modified solar still was capable to yield fresh water during no sunshine hours of evening as an effect of utilization of phase change material. The study suggests that direct coupling of the evacuated heat pipe to the solar still performs well in terms of fresh water yield and the same can be employed for household purpose.

show abstract

Enhancing the fresh water produced from inclined cover stepped absorber solar still using wick and energy storage materials

Cited by 59 publications

References 47 publications

Augmentation of freshwater productivity in single slope solar still using Luffa acutangula fibres

Augmentation of freshwater productivity in single slope solar still using Luffa acutangula fibres

Comparative study on stepped solar distillers internally loaded with different masses of phase change material

Experimental Investigation on Productivity Enhancement of a Solar Still Modified with the Evacuated Tube Heat Pipe using Paraffin Wax

Contact Info

Product

Resources

About