Sustainability and 4E analysis of novel solar photovoltaic-thermal solar dryer under forced and natural convection drying

Article Green & Sustainable Science & Technology

Energy and exergy analysis of forced and natural convection indirect solar dryers: Estimation of exergy inflow, outflow, losses, exergy efficiencies and sustainability indicators from drying experiments

Vishnuvardhan Reddy Mugi et al.

Summary: Energy and exergy analysis (EEA) was conducted to compare the performance of an indirect solar dryer (ISD) under forced and natural convection conditions, showing that forced convection ISD outperformed natural convection ISD.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Green & Sustainable Science & Technology

Energy and exergy analysis of the drying of corn grains

Gisele Mol da Silva et al.

Summary: A mixed cabin solar dryer with a photovoltaic module for power was designed and tested in Brazil, achieving a faster drying time for corn grains compared to natural sun drying. The dryer also used the PV module to preheat drying air, improving overall efficiency.

RENEWABLE ENERGY (2021)

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Article Green & Sustainable Science & Technology

Energy and exergy analyses of carob pulp drying system based on a solar collector

Zakaria Tagnamas et al.

Summary: The study focused on the impact of drying temperature on drying time, as well as the variation range of the diffusion coefficient. Energy-exergy analysis was conducted to evaluate the performance of the solar dryer in terms of energy and exergy efficiencies.

RENEWABLE ENERGY (2021)

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Review Green & Sustainable Science & Technology

Five decades of evolution of solar photovoltaic thermal (PVT) technology - A critical insight on review articles

M. Chandrasekar et al.

Summary: Solar photovoltaic thermal (PVT) technology, which combines electricity generation and heat production, has been widely studied and applied in various fields over the past 50 years. Numerous review articles have been published to summarize the progress and provide a valuable reference for researchers in the future.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Thermodynamics

Energy, exergy, exergoeconomic and exergo-environmental analyses of a large scale solar dryer with PCM energy storage medium

Halil Atalay et al.

Summary: This paper presented performance, exergoeconomic, and exergo-environmental assessments of a large scale solar dryer with energy storage medium. The study indicated the usability of the system for high capacity industrial drying processes and highlighted the importance of further development of the fans component. The evaluations demonstrated that the developed system was highly efficient in terms of energy use performance and environmental sustainability.

ENERGY (2021)

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Article Green & Sustainable Science & Technology

Energy and exergy analysis of a photovoltaic thermal (PVT) system used in solar dryer: A numerical and experimental investigation

Erdem Ciftci et al.

Summary: A vertical hybrid PVT solar dryer was developed and analyzed in this study, with the use of fins to enhance heat transfer. Experimental results showed that the application of fins significantly improved drying performance.

RENEWABLE ENERGY (2021)

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Article Green & Sustainable Science & Technology

Energy, exergy and environmental impact analysis on the novel indirect solar dryer with fins inserted phase change material

S. Madhankumar et al.

Summary: The experimental analysis of an Indirect Solar Dryer (ISD) with different conditions showed that the ISD with TES having fins inserted PCM performed best in drying Momordica charantia, achieving high thermal efficiency and exergy efficiency. The environmental impact assessment of the device revealed its good Energy Payback Time and potential for carbon emission reduction, demonstrating effective commercial drying technology with energy efficiency and environmental sustainability.

RENEWABLE ENERGY (2021)

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Article Energy & Fuels

Performance evaluation of hybrid photovoltaic thermal (PVT) solar dryer for drying of cassava

E. Veeramanipriya et al.

Summary: A prototype hybrid Photovoltaic Thermal (PV - T) solar dryer has been developed and tested in India for drying cassava slices. The dryer was found to significantly reduce the moisture content of cassava, improving the drying efficiency and quality of the final product.

SOLAR ENERGY (2021)

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Review Energy & Fuels

Energy, exergy, and techno-economic performance analyses of solar dryers for agro products: A comprehensive review

A. Ahmadi et al.

Summary: This paper discusses solar-powered agricultural product drying technologies, analyzes the impact of different types of solar dryers and their main parameters on performance, compares the performance of existing solar dryers, and outlines future research directions.

SOLAR ENERGY (2021)

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Article Energy & Fuels

Analysis of drying kinetics, energy and microstructural properties of turnips using a solar drying system

Decheng Kong et al.

Summary: The study showed that using a solar dryer for drying turnips is faster and results in better quality compared to natural drying, especially in cloudy weather.

SOLAR ENERGY (2021)

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Article Thermodynamics

Energy and exergy analyses of a mixed-mode solar dryer of pear slices (Pyrus communis L)

Lopez Vidana Erick Cesar et al.

Summary: A mixed-type solar dryer operating with three different modes of operation showed varying efficiencies in reducing moisture content of pears. Among the modes, MM-NC mode demonstrated the highest energy utilization ratio and exergy efficiency. Further research should focus on increasing load to improve thermal and exergy efficiency in MM-NC and MM-FC modes.

ENERGY (2021)

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Article Thermodynamics

A novel active-mode indirect solar dryer for agricultural products: Experimental evaluation and economic feasibility

Sukhmeet Singh et al.

Summary: A novel active-mode indirect solar dryer with highly efficient through-flow evacuated tube collector for air heating was designed. The dryer can dry fenugreek leaves and turmeric in semi-continuous mode and shows good economic viability.

ENERGY (2021)

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Article Green & Sustainable Science & Technology

Environmental and economic analysis of novel hybrid active greenhouse solar dryer with evacuated tube solar collector

Pushpendra Singh et al.

Summary: The novel hybrid active greenhouse solar dryer features a heat exchanger and evacuated tube collectors, significantly reducing drying time for three different crops and mitigating substantial amount of CO2 emissions over its lifetime.

SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS (2021)

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Article Green & Sustainable Science & Technology

Energy-exergy and sustainability analysis of a PV-driven quadruple- flow solar drying system

Ataollah Khanlari et al.

Summary: Solar energy is being widely explored as a clean energy source to meet a large portion of energy demand in the future. A square-spiral finned quadruple-flow solar collector has been designed and compared with a finless collector in this study, demonstrating higher efficiency.

RENEWABLE ENERGY (2021)

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Article Green & Sustainable Science & Technology

Energy-exergy analysis of an infrared dryer equipped with a photovoltaic-thermal collector in glazed and unglazed modes

Saeid Mirzaei et al.

Summary: This study investigated the manufacturing and testing of an infrared dryer equipped with a PV/T solar collector, aiming to compare the energy and exergy efficiency of the dryer in glazed and unglazed modes, as well as analyze the drying kinetic of potato slices. The experiments showed that glazed mode prolonged drying time by 12-25% for 3 mm thicknesses and 5-25% for 7 mm thicknesses compared to unglazed mode, despite the system's low energy consumption.

RENEWABLE ENERGY (2021)

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Article Energy & Fuels

Natural and forced air convection operation in a direct solar dryer assisted by photovoltaic module for drying of green onion

Leticia Ferraresi Hidalgo et al.

Summary: The research developed a direct solar dryer assisted by a photovoltaic module and evaluated its performance through experiments. Drying of green onions showed constant rate and falling rate periods, with higher efficiency observed in forced convection runs. Little color variation was observed between fresh and dried green onions, meeting the requirement of maintaining the green color.

SOLAR ENERGY (2021)

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Article Thermodynamics

Energy analysis and economic feasibility of wood dryers integrated with heat recovery unit and solar air heaters in cold and hot climates

Bilal Lamrani et al.

Summary: This paper numerically investigates the energy performance and economic feasibility of conventional wood dryer systems integrated with a heat recovery unit and solar air heaters. The results show that recovering waste heat and using solar air heaters significantly reduce the energy consumption of wood dryers under different climatic conditions.

ENERGY (2021)

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Article Energy & Fuels

Performance studies on mixed-mode forced convection solar cabinet dryer under different air mass flow rates for drying of cluster fig

Jasinta Poonam Ekka et al.

Summary: The article introduces a mixed-mode forced convection solar cabinet dryer and experimentally studies its drying performance on cluster fig under different air mass flow rates. The most suitable mathematical model for representing the drying behavior is discussed, and quality analyses were carried out for solar and sun-dried cluster fig.

SOLAR ENERGY (2021)

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Article Energy & Fuels

Thermal performance and environmental assessment of a hybrid solar-electrical wood dryer integrated with Photovoltaic/Thermal air collector and heat recovery system

Bilal Lamrani et al.

Summary: This study investigates a novel hybrid dryer system for wood drying industry, which includes a PVT solar air collector, an insulated drying chamber, an air-to-air heat recovery system and fans. Results show that the proposed system significantly reduces carbon emissions and improves energy efficiency in wood drying process, with up to 86.5% energy consumption reduction during summer and 73.5% reduction during winter.

SOLAR ENERGY (2021)

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Article Energy & Fuels

Development and assessment of generalized drying kinetics in multi-tray solar cabinet dryer

Arun K. Raj et al.

Summary: This study evaluates the feasibility of a generalized drying characteristic curve in an indirect mode multi-tray solar cabinet dryer by considering a tray reordering pattern and the dryer performance index (DPI) method. The results show that the DPI value corresponding to the generalized curve can directly indicate dryer performance and reduce complexity in assessing drying behavior of agro-product samples in multiple trays. The findings highlight the significant influence of the adopted tray reordering pattern on the success of the DPI method in establishing a generalized curve in a multi-tray dryer.

SOLAR ENERGY (2021)

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Article Green & Sustainable Science & Technology

Energy and exergy analyses of drying medicinal herb in a novel forced convection solar dryer integrated with SHSM and PCM

A. K. Bhardwaj et al.

Summary: This study investigated the performance of a low cost forced convection solar drying system, evaluating elements based on energy and exergy analyses. It was found that incorporating thermal energy storage medium can improve system efficiency.

SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS (2021)

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Article Green & Sustainable Science & Technology