Performance of a hybrid compound parabolic concentrator solar dryer for tomato slices drying

Ebadi, Hossein; Zare, Dariush; Ahmadi, Masoud; Chen, Guangnan

doi:10.1016/j.solener.2020.12.026

Cited by 15 publications

(2 citation statements)

References 51 publications

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“…So, interventions have also been made to ensure the continuous operation of solar dryers by incorporating auxiliary drying systems. For example, Ebadi et al (2021) developed a system for tomato drying with a compound parabolic concentrator solar collector equipped with an auxiliary electric heater to perform uninterrupted drying operations. Work has also been reported to achieve targeted drying in tomatoes using solar dryers by integrating advanced methods to harness superior performance.…”

Section: Common Drying Techniques In Tomatomentioning

confidence: 99%

Recent developments in tomato drying techniques: A comprehensive review

Pravitha,

Dipika Agrahar,

Ajesh Kumar

2024

J Food Process Engineering

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Tomatoes, a highly perishable agricultural product, are commonly dried to extend their shelf life. They serve as raw materials in various domains, including direct consumption and as key ingredients in processed foods, functional foods, and nutraceuticals. However, producing dried tomato products with quality attributes equivalent to fresh tomatoes, such as nutrient content, appearance, flavor, texture, and reconstitution properties, poses significant challenges. Several research attempts have been made to evaluate the feasibility of different drying methods for tomatoes. Solar drying, hot air drying, and spray drying are commonly employed techniques, each with its own set of advantages and disadvantages. Conventional solar drying practices often result in extended drying times and undesirable quality parameters. Hence, it is imperative to adopt enhanced solar drying techniques for the large‐scale production of dried tomato products. Additionally, hybrid‐drying approaches can be explored to achieve better quality products with reduced drying times. Pretreatments before drying can also enhance overall drying performance. Combining conventional drying with novel drying methods, precise selection of drying parameters and pretreatments are demonstrated as efficient ways to improve the drying rate while preserving food quality. Modeling the drying process is also critical for designing large‐scale dryers, selecting appropriate drying conditions, maintaining product quality, and process optimization. Therefore, this article aims to provide detailed insight into existing drying methods with their unique features and modeling approaches, which may enable professionals and scientists to choose better and optimized tomato drying method to deliver the highest quality product to consumers.Practical ApplicationsProcessing tomatoes as dried products is a potential area to explore to minimize their postharvest loss. Lack of awareness regarding how to process, what parameters to consider, and which method to employ are hurdles in adopting and popularizing dried tomato products. Hence, it is crucial to consolidate the key findings pertaining to tomato drying from various methods into a unified platform. This will provide valuable guidance to future researchers and enable consumers to make informed decisions when selecting the most suitable drying method. Therefore, this comprehensive review aims to elucidate the current practices in tomato drying, highlighting their potential benefits and limitations.

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Section: Common Drying Techniques In Tomatomentioning

confidence: 99%

Recent developments in tomato drying techniques: A comprehensive review

Pravitha,

Dipika Agrahar,

Ajesh Kumar

2024

J Food Process Engineering

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“…Flat plate collectors are frequently utilized for applications needing less than 80°C [21], [22]. Compared to concentrating type collectors, flat plate collectors are mechanically simpler and require less care [23][24][25]. The main structure of the drying chamber is constructed of low-cost ply board that is 0.019 m thick and this enclosure is typically a box of 1.00 m × 0.60 m × 0.60 m. It was insulated and covered at all sides with 0.025-m-thick polyurethane foam to minimize heat losses.…”

Section: Figure 1 the Cad Design Of The Assembled Solar Dryermentioning

confidence: 99%

Design, Construction, and Investigation of the Drying Equipment Using Solar Power for Bangladeshi Fruits and Vegetables

Bhuiyan,

Afif,

Rahman

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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In underdeveloped nations where fuel and electricity are expensive, crop drying using solar power is a practical and affordable method of food preservation. For farmers in rural areas, it can be difficult or impossible to preserve fruits for later use without access to fuel and huge drying systems. Drying of potatoes in the sun is carried out with industrial dryers integrating solar power. This experiment shows how to design and optimize drying systems for usage in developing nations. A model of an industrial sun-drying system has been created and validated through experimental testing. The ambient temperature is between 28°C and 33°C, while the drying chamber’s temperature ranges from 30°C to 48°C at a flow rate of 1.8 m/s. The moisture content of the dried potato sample was 84.7% and 8.27% under loaded conditions and using only silica gel respectively. We use a photovoltaic (PV) solar panel-powered heating element coil in combination with solar energy that improves the efficiency of agricultural dryers.

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