A review on solar greenhouse dryer: Design, thermal modelling, energy, economic and environmental aspects

Srinivasan, G.; Muthukumar, P.

doi:10.1016/j.solener.2021.04.058

Cited by 55 publications

(11 citation statements)

References 142 publications

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“…As can be seen from Figure 2, solar energy is used to dry foods in three different types of drying methods [14], [19]: i) direct type, ii) indirect type, and iii) mixed mode. Hence, there is six basic types of solar dryer techniques which are (a) direct active dryer, (b) direct passive dryer, (c) indirect active dryer, (d) indirect passive dryer, (e) mixed-mode active dryer, and (f) mixed-mode passive dryer.…”

Section: Classification Of Agricultural Produce Solar Dyersmentioning

confidence: 99%

“…In the direct-type solar dryer system, the products are placed inside the drying unit or room where the heating or drying occurs. The products are dried by exposing them directly to solar radiation through a transparent material such as glass [19]. Lakshmi et al [48] defined that the direct solar dryer's purpose is to reduce heat loss during operation.…”

Section: Classification Of Agricultural Produce Solar Dyersmentioning

confidence: 99%

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A review of solar drying technology for agricultural produce

Rizalman

Moung

Dargham

et al. 2023

IJEECS

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Agriculture contributes to large export earnings for many countries and provides food all over the world. However, most agricultural products need some post-harvest processing, such as drying, to extend their shelf life while still maintaining their respective nutrient quality. One popular post-harvest processing method is drying using solar energy. It is a type of renewable energy that is abundant and free. Conventional dryers use grid electricity and can be expensive to operate. Consequently, there is a growing need for cost-effective solar-powered agricultural dryers that is reasonable for smaller-scale farmers. Although current solar dryers are still not on par with modern electricity-powered dryers, solar dryers have lower running costs and are sustainable and able to generate electricity. They can also be used practically anywhere with abundant solar energy. As numerous solar drying technologies have been proposed over the past decade, it is necessary to assess the current state of solar drying technology in the agricultural sector to identify current advancements and potential research gaps. In this paper, a review of existing solar dryers mechanism and the state of the art of solar drying technology research for agricultural products is presented.

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Section: Classification Of Agricultural Produce Solar Dyersmentioning

confidence: 99%

Section: Classification Of Agricultural Produce Solar Dyersmentioning

confidence: 99%

A review of solar drying technology for agricultural produce

Rizalman

Moung

Dargham

et al. 2023

IJEECS

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“…A novel solar tracking generation system was designed and tested to generate power for lighting in greenhouses. The experimental results indicated that the system could provide nearly 100% of the greenhouse power requirements [ 188 , 189 , 190 , 191 ]. However, the realization of optimal performance was contingent on optimizing the systems using IoT-based artificial neural networks to control solar tracking and precision agriculture systems [ 192 , 193 ].…”

Section: Biomimetic Materials Structures and Resource Managementmentioning

confidence: 99%

Bio-Inspired Robots and Structures toward Fostering the Modernization of Agriculture

et al. 2022

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Biomimetics is the interdisciplinary cooperation of biology and technology that offers solutions to practical problems by analyzing biological systems and transferring their principles into applications. This review article focused on biomimetic innovations, including bio-inspired soft robots and swarm robots that could serve multiple functions, including the harvesting of fruits, pest control, and crop management. The research demonstrated commercially available biomimetic innovations, including robot bees by Arugga AI Farming and the Robotriks Traction Unit (RTU) precision farming equipment. Additionally, soft robotic systems have made it possible to mitigate the risk of surface bruises, rupture, the crushing destruction of plant tissue, and plastic deformation in the harvesting of fruits with a soft rind such as apples, cherries, pears, stone fruits, kiwifruit, mandarins, cucumbers, peaches, and pome. Even though the smart farming technologies, which were developed to mimic nature, could help prevent climate change and enhance the intensification of agriculture, there are concerns about long-term ecological impact, cost, and their inability to complement natural processes such as pollination. Despite the problems, the market for bio-inspired technologies with potential agricultural applications to modernize farming and solve the abovementioned challenges has increased exponentially. Future research and development should lead to low-cost FEA robotic grippers and FEA-tendon-driven grippers for crop harvesting. In brief, soft robots and swarm robotics have immense potential in agriculture.

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“…In line with Dahlqvist and Nilsson-Hedman (2015), Hoogenboom (2019) notes the benefits of PCMs could be enhanced by increasing their level of responsiveness to sugars and other biomolecules CO 2 , mechanical stress, pH, and temperature. Alternatively, the challenge could be offset by transparent PV modules installed in a checkboard configuration to maximize the capture of incident radiation (Srinivasan and Muthukumar, 2021). The unique requirements of PCMs demonstrated the need for complementary materials such as LSCs.…”

Section: Phase Change Materialsmentioning

confidence: 99%

Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

et al. 2021

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The examination of recent developments and future perspectives on smart and solar greenhouse covers is significant for commercial agriculture given that traditional greenhouse relied on external energy sources and fossil fuels to facilitate lighting, heating and forced cooling. The aim of this review article was to examine smart and solar materials covering greenhouse. However, the scope was limited to intelligent PhotoVoltaic (PV) systems, optimization of some material properties including smart covers, heat loading and the use of Internet of Things (IoT) to reduce the cost of operating greenhouse. As such, the following thematic areas were expounded in the research; intelligent PV systems, optimization of the Power Conversion Efficiency (PCE), Panel Generator Factor (PGF) and other material properties, heat loading future outlook and perspectives. The intelligent PV section focused on next-generation IoT and Artificial Neural Networks (ANN) systems for greenhouse automation while the optimization of material parameters emphasized quantum dots, semi-transparent organic solar cells, Pb-based and Pb-based PVs and three dimensional (3D) printing. The evaluation translated to better understanding of the future outlook of the energy-independent greenhouse. Greenhouse fitted with transparent PV roofs are a sustainable alternative given that the energy generated was 100% renewable and economical. Conservative estimates further indicated that the replacement of conventional sources of energy with solar would translate to 40–60% energy cost savings. The economic savings were demonstrated by the Levelized cost of energy. A key constraint regarded the limited commercialization of emerging innovations, including transparent and semitransparent PV modules made of Pb-quantum dots, and amorphous tungsten oxide (WO3) films, with desirable electrochromic properties such as reversible color changes. In addition to intelligent energy harvesting, smart IoT-based materials embedded with thermal, humidity, and water sensors improved thermal regulation, frost mitigation and prevention, and the management of pests and disease. In turn, this translated to lower post-harvest losses and better yields and revenues.

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A review on solar greenhouse dryer: Design, thermal modelling, energy, economic and environmental aspects

Cited by 55 publications

References 142 publications

A review of solar drying technology for agricultural produce

A review of solar drying technology for agricultural produce

Bio-Inspired Robots and Structures toward Fostering the Modernization of Agriculture

Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

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