Regeneration of liquid desiccant for solar air-conditioning and desalination using hybrid solar still

Modi, Kalpesh V.; Shukla, Dhruvin L.

doi:10.1016/j.enconman.2018.06.096

Cited by 84 publications

(3 citation statements)

References 34 publications

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“…Figures [13][14][15] show the hourly variations in the ambient temperature, solar radiation, water temperature, and glass temperature with the addition of nanoparticles at the depths of 10, 20, and 30 mm with different ϕ values of 0.5%, 1%, and 1.5%. The initial solar radiation was 200 W/m 2 (at 06:00), and the maximum value was 1180 W/m 2 (at 13:00).…”

Section: Nanofluid Effect On Solar Still Performancementioning

confidence: 99%

“…Dumka et al 14 investigated both theoretically and experimentally the improvement of the overall internal and energy efficiencies of a solar still to 49.17% and 110.26%, respectively, using a permanent ferrite ring magnet. Modi and Shukla 15 studied the performance of a hybrid solar still within the regeneration of a liquid desiccant and the distillation of saline water, and displayed an increase of 26.19% in the overall thermal efficiency when a nanofluid was applied, which improved the energy transfer.…”

Section: Introductionmentioning

confidence: 99%

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Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

et al. 2021

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The performance of a single-slope solar still system has been improved with the addition of copper oxide (CuO) nanopowder in water as nanofluid and thermoelectric glass cover cooling combination. The use of vibration further enhances the performance of distillate water as a result of the accelerated heat transfer. In this study, CuO nanofluids loaded the solar still system at volume concentrations of 0.5%, 1%, and 1.5%. The design, fabrication, and testing of the single still were conducted under the local weather conditions of Alexandria, which is located in the northwest of Egypt. The proposed solar still had a base area of 1 m 2 and fitted with four coiled springs, a DC motor, and a photovoltaic (PV) solar panel. The vibration generator was a three-phased, with a 1-HP power motor (220 V, 50 Hz, and 1380 rpm maximum speed) fixed to a compact disk with a small punch for adding masses to generate the un-mass balance forces. The power source for the DC motor was a 250-W PV. The daily output of fresh water during the experimental period was empirically measured under the same climate conditions, and the results were compared with those of a conventional solar still. The daily rates of freshwater productivity were investigated in two cases: (a) under vibration without cover cooling and (b) under vibration with cover cooling at the three given nanofluid volume concentrations. Based on the results, the highest daily freshwater productivity attained with the vibration and cover cooling (at the 1.5% nanofluid volume concentration) 7.

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Section: Nanofluid Effect On Solar Still Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

et al. 2021

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“…Currently, most conventional air-conditioning systems are based on the vapour compression process, whereby the air is first dehumidified by deep cooling to dew point temperature to condense moisture and then reheated to achieve a desired temperature. The deep cooling and the subsequent reheating of the air waste energy, rendering the conventional air-conditioning systems energyinefficient (Modi and Shukla 2018;). On the other hand, LDAC systems dehumidify and cool the air via the direct absorption of moisture into a liquid desiccant solution (i.e.…”

Section: Introductionmentioning

confidence: 99%

Assessment of pilot direct contact membrane distillation regeneration of lithium chloride solution in liquid desiccant air-conditioning systems using computer simulation

Duong

Nghiem

Ansari

et al. 2021

Environ Sci Pollut Res

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Membrane distillation (MD) has been increasingly explored for treatment of various hyper saline waters, including lithium chloride (LiCl) solutions used in liquid desiccant airconditioning (LDAC) systems. In this study, the regeneration of liquid desiccant LiCl solution by a pilot direct contact membrane distillation (DCMD) process is assessed using computer simulation. Unlike previous experimental investigations, the simulation allows to incorporate both temperature and concentration polarisation effects in the analysis of heat and mass transfer through the membrane, thus enabling the systematic assessment of the pilot DCMD regeneration of the LiCl solution. The simulation results demonstrate distinctive profiles of water flux, thermal efficiency, and LiCl concentration along the membrane under co-current and counter-current flow modes, and the pilot DCMD process under counter-current flow is superior to that under co-current flow regarding the process thermal efficiency and LiCl concentration enrichment. Moreover, for the pilot DCMD regeneration of LiCl solution under the counter-current flow, the feed inlet temperature, LiCl concentration, and especially the membrane leaf length exert profound impacts on the process performance: the process water flux halves from 12 to 6 L/(m 2 h) while thermal efficiency decreases by 20% from 0.46 to 0.37 when the membrane leaf length increases from 0.5 to 1.5 m.

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Analysis of Thermosyphon Water Purification System

Khandelwal,

Yadav,

Saxena

et al. 2024

Lecture Notes in Mechanical Engineering

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Regeneration of liquid desiccant for solar air-conditioning and desalination using hybrid solar still

Cited by 84 publications

References 34 publications

Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

Assessment of pilot direct contact membrane distillation regeneration of lithium chloride solution in liquid desiccant air-conditioning systems using computer simulation

Analysis of Thermosyphon Water Purification System

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