Energy and exergy analyses of active solar still integrated with evacuated flat plate collector for New Delhi

Abozoor, Mahmoud K.S.; Meraj, Md.; Azhar, Md; Khan, Munna; Seraj, Mohammad; Ahsan, Md; Ahmed, Shah Aqueel; Hani, Ehab Hussein Bani

doi:10.1016/j.gsd.2022.100833

Cited by 11 publications

(3 citation statements)

References 29 publications

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“…-water vapor mass transfer optimization from the evaporation surface to the condenser (Peng et al, 2022), and separation of condenser from evaporator to avoid water vapor condensation on glass cover, which decreases its transmissivity and therefore freshwater productivity (Al-Otoom & Al-Khalaileh, 2020;Elminshawy et al, 2015;Ibrahim & Dincer, 2015;Shoeibi, Kargarsharifabad, Rahbar, et al, 2022;Wu et al, 2017), -preheating seawater and regulating its flow rate by using wicks (Abdelaziz et al, 2021;Abdullah et al, 2019;Abdullah, Omara, Essa, Alarjani, et al, 2021;Abdullah, Omara, Essa, Younes, et al, 2021;Dhindsa, 2021;F. A. Essa, Alawee, et al, 2021;Fayaz et al, 2022;Jobrane et al, 2021Jobrane et al, , 2022Modi, Maurya, et al, 2022;Modi, Patel, et al, 2022;Modi & Modi, 2019;Negi et al, 2022;Omara et al, 2013;Sharshir, Eltawil, et al, 2020;Zaheen Khan, 2022), water pumps (Abozoor et al, 2022; M. M. Z. Kumar et al, 2014), rotating belts (Al-Otoom & Al-Khalaileh, 2020;Saeed et al, 2022), -glass cover cooling (Elashmawy, 2019;Kousik Suraparaju & Kumar Natarajan, 2022;Sharshir et al, 2017;Sharshir, Rozza, Joseph, et al, 2022;Sibagariang et al, 2022), s -the use of heat storage materials such as latent heat storage or phase change material (PCM) and sensible heat storage (H. Alharahsheh et al, 2018;…”

Section: Introductionmentioning

confidence: 99%

Theoretical Performance Assessment of a Parabolic Trough Humidifying Solar Collector-Based Solar Still

Welepe,

Günerhan,

Bilir

2024

Isı Bilimi Ve Tekniği Dergisi

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In this paper, a parabolic trough humidifying solar collector-based solar still (PHSC-SS) is proposed. Its purpose is to apply some important performance improvement techniques to the flat plate humidifying solar collector-based solar still (flat plate HSC-SS), to significantly improve overall system performance. These included the use of parabolic trough solar concentrators and the design of humidifying solar collectors from evacuated tube collectors. The results reveal that, unlike flat plate HSC-SS, which must operate with a turbulent airflow regime to achieve optimum overall performance, PHSC-SS must operate with a laminar airflow regime and high inlet and outlet temperatures of air (at least 55 °C and less than 100 °C, at atmospheric pressure) in the heat collector element. For 900 W/m2 of incident solar irradiance, 2 m2 of solar collector area, and 0,00042 kg/s of air flow rate, the maximum energy efficiency, exergy efficiency and daily freshwater productivity of PHSC-SS were found to be 68,12%, 14,87% and 1,697 kg/h, respectively. Whereas for the same incident solar irradiance and solar collector area, and 0,1 kg/s of air flow rate, those of the flat plat HSC-SS were 72,9%, 1,12%, and between 1,07 – 2,923 kg/h (for inlet and outlet temperatures of air less than 30 °C, at atmospheric pressure), respectively. Although in some extreme cases freshwater productivity of flat plate HSC-SS can be higher than that of PHSC-SS, it should be noted that laminar airflow regime confers great advantages to PHSC-SS. These are higher air temperatures at condenser inlet (which ease water condensation process), no need of an auxiliary cooling device (needed in the flat plate HSC-SS), less mechanical vibrations of system, reduced condenser size, and less energy consumed by air blowers. Furthermore, the upper limit of the PHSC-SS is a PHSC-SS that operates without air flow, but rather by vaporization of water droplets at boiling point from absorber, followed by their suction to condenser, similarly to a flash evaporation.

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Section: Introductionmentioning

confidence: 99%

Theoretical Performance Assessment of a Parabolic Trough Humidifying Solar Collector-Based Solar Still

Welepe,

Günerhan,

Bilir

2024

Isı Bilimi Ve Tekniği Dergisi

View full text Add to dashboard Cite

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“…This integration leads to increased energy efficiency, improved water production rates, and enhanced overall system performance compared to conventional solar stills. The studies highlight the potential of hybrid solar stills with photovoltaic panels and solar thermal collectors as a promising and sustainable technology for water desalination and purification 19–21 . The integration of photovoltaic panels and a heat exchanger in a hybrid solar still system has been investigated, and the results indicate improved performance and efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The studies highlight the potential of hybrid solar stills with photovoltaic panels and solar thermal collectors as a promising and sustainable technology for water desalination and purification. [19][20][21] The integration of photovoltaic panels and a heat exchanger in a hybrid solar still system has been investigated, and the results indicate improved performance and efficiency. The combination of photovoltaic cells electrical power generation, while the heat exchanger effectively utilizes waste heat for water distillation, resulting in enhanced water production rates and overall system efficiency.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the effective condenser glass area of solar still hybrid with photovoltaic cells

Yuvaraj,

Ganapathy Sundaram,

Shanthi

et al. 2024

Env Prog and Sustain Energy

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Solar desalination is a broad research field in the production of freshwater. The efficiency of the natural conversion solar desalination system is the only limitation to becoming its commercialization. It needs 1 m2 area for getting approximately 4.5 L of fresh water/day. In active methods 1 m2 area of solar still produce yield up to 10 L/day. In this study a new technology of fixing the photovoltaic cell (PV cells) in the natural passive solar still condenser glass to harvest both freshwater as well as electrical power generation is proposed. The experiments were carried out with conventional solar still of a glass surface area of 0.5 m2, still with an effective glass surface area of 0.3812 m2 and 36 PV cells taken up area of 0.1188 m2, and still with effective glass surface area of 0.3020 m2 and 60 PV cells taken up area of 0.198 m2. The study found that conventional solar still produced 2140 mL/day of yield, still with 36 PV cells produced 1380 mL/day of yield and 98 W of electrical power and still with 60 PV cells produced 840 mL/day of yield and 165 W of electrical power. This hybrid system, solar still with PV cells, produce both fresh water and electrical power. The fresh water yield and electrical power generation depends on the effective area of the solar still glass surface area and area occupied by PV cells attached to the solar still glass cover.

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Comparative energy metrics and annual efficiency analyses of CPC‐ETC integrated single slope solar desalting unit

Singh,

Agarwal,

Singh

2024

Env Prog and Sustain Energy

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This paper deals with the investigation of N identical compound parabolic concentrator evacuated tubular collector included single slope solar desalting unit (N‐CPC‐ETC‐SSU) by incorporating energy metrics for solving contemporary issue of water scarcity in the society. It will contribute to the sustainable development of society and recede the dependency on fossil fuels, too. The energy metrics investigation is important for energy system because it talks about the feasibility of the system. The methodology consists of getting fundamental equations from energy balance equations. All fundamental equations with relevant data are fed to the code developed in MATLAB followed by the computation of overall energy and exergy. All types of climatic situations have been considered for the analysis. Data required for the same are accessed from IMD, Pune, India. The energy payback period, energy production factor, and life cycle conversion efficiency for N‐CPC‐ETC‐SSU have been calculated at eight number of collectors, 0.012 mass flow rate and 0.14 m water depth. Results of N‐CPC‐ETC‐SSU have been compared with results of SSU included with ETCs. Concludingly, energy payback period is lower by 6.41%, energy production factor is higher by 6.25% and exergy‐based life cycle conversion efficiency is higher by 96.39% for N‐CPC‐ETC‐SSU than N‐ETC‐SSU.

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Energy and exergy analyses of active solar still integrated with evacuated flat plate collector for New Delhi

Cited by 11 publications

References 29 publications

Theoretical Performance Assessment of a Parabolic Trough Humidifying Solar Collector-Based Solar Still

Theoretical Performance Assessment of a Parabolic Trough Humidifying Solar Collector-Based Solar Still

Experimental investigation on the effective condenser glass area of solar still hybrid with photovoltaic cells

Comparative energy metrics and annual efficiency analyses of CPC‐ETC integrated single slope solar desalting unit

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