Reduced Model and Comparative Analysis of the Thermal Performance of Indirect Solar Dryer with and without PCM

Ramírez, Camilo; Palacio, Mario; Carmona, Mauricio

doi:10.3390/en13205508

Cited by 15 publications

(4 citation statements)

References 25 publications

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“…Drying directly in the foodstuffs in an open area is vulnerable to animal disturbance and exposure to dust and flies. Insects, animals, dirt, and dust are some of the environmental conditions which are the weaknesses of drying in the open which affects product quality [5,6,7]. In addition, direct solar drying puts workers at risk of continuous heat exposure and injury from working in the open and unnatural working postures.…”

Section: Introductionmentioning

confidence: 99%

Thermal study of wave plate applications for indirect method solar drying collectors

Alit¹,

Susana²

2023

Global J. Eng. Technol. Adv.

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Cheap and easy direct solar drying is still practiced by small farmers who mostly live in rural areas. This method results in slow drying and improper heating due to sub-optimal temperatures. This only relies on the ambient temperature which has an average of 32.26oC with a range of 29.38-33.88oC. In addition, small farmers need appropriate tools at affordable prices and materials that are easy to obtain on the market. For this reason, the research was carried out by thermally studying an indirect type solar dryer using a corrugated plate collector made of zinc material. The test results show that the ambient temperature can be increased by 34.54%. This increase was measured in the drying chamber without load with an average temperature of 49.29oC with a range of 38.20-56.84oC. With this condition, it is hoped that it can be applied in the post-harvest drying process for small farmers. In addition, dryers designed with local materials and readily available on the market have received a positive response from small farmers to speed up the food drying process.

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Section: Introductionmentioning

confidence: 99%

Thermal study of wave plate applications for indirect method solar drying collectors

Alit¹,

Susana²

2023

Global J. Eng. Technol. Adv.

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“…This proposal aimed to extend operational hours through the night. The study delved into the effectiveness of three different models, and the findings indicated an enhancement in the duration of effective drying hours (Ramirez, Palacio, and Carmona, 2020).…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and Evaluating of Indirect Solar Dryers

Khidir

2023

ARO

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–Indirect solar drying uses solar radiation to heat air and dry agricultural products in harvest time to store them for a longer time and reduce waste. The dryer consists of a solar air heater collector, a drying chamber, and an air ventilation system. In this study, an indirect solar dryer system is constructed and ventilated with an electrical fan. Experiments are conducted on the system using eggplant as an agricultural sample on 2 consequent days (29th and 30th October 2022), to evaluate the system data recorded during the drying process in terms of the temperature for points in the system, solar radiation, and the sample mass. The temperature measurements are ambient, collector, and dried chamber outlet temperatures. The results show that the most effective time for solar drying is between 9:00 and 16:00, and the drying system air temperature is raised to about 40°C when solar radiation reached more than 600 W/m2 in the noon time. The weighted mass is used to evaluate the drying process, and maximum drying rate and drying efficiency are obtained on the 1st day of the drying before noon time.

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“…Abuelnuor et al (2021) fabricated a solar dryer and dried tomato under indirect mode. It was reported that tomato slices were dried within 10 h. Ramirez et al (2020) analyzed an indirect solar dryer with and without PCM. Vijayan et al (2020) developed an indirect forced convection solar dryer for bitter gourd slices drying.…”

Section: Introductionmentioning

confidence: 99%

Exergy, drying kinetics, and performance assessment of Solanum lycopersicum (tomatoes) drying in an indirect type domestic hybrid solar dryer ( ITDHSD ) system

Sharma

Atheaya

Kumar

2022

Food Processing Preservation

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An indirect type domestic hybrid solar dryer (ITDHSD) has been fabricated and its thermal performance, exergy, and drying kinetics of tomatoes slice were analyzed. Moisture in tomato slices was dried from 95% to 9% (wet basis) in 10 h of solar drying in ITDHSD during the winter season. Drying curve obtained was fitted with different existing empirical models and Prakash and Kumar model was found suitable for tomatoes drying in ITDHSD. Overall drying efficiency of the system was estimated as 41.05%. Furthermore, with variable mass flow rate, exergy efficiency values varied from 32.86% to 58.26%. Overall exergy efficiency was 46% during tomato drying experimentation. Various exergy sustainability indicators have been estimated in this study to observe improvement potential in the system. Improvement potential, waste exergy ratio, and sustainability index of the ITDHSD system was estimated in the range of 0.006966–0.065984, 0.41–0.67, and 1.55–2.39, respectively. Therefore, ITDHSD system provides a better option to domestic users for drying food crops in less duration and with no deterioration. This piece of work will be helpful for researchers in performing exergy analysis, drying kinetics, and performance assessment on hybrid solar dryers. Novelty impact statement All available literature on tomato drying in a compact sized dryer lacked in evaluation of the exergy analysis of solar PV module used to run a fan. Moreover, an essential factor of equivalent moisture content is also neglected in the literature during calculation of moisture ratio, which cannot be neglected in drying high moisture crops in tropical areas with high relative humidity. In the present experimental study, a new hybrid solar dryer system design has been developed and fabricated for domestic users.

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Reduced Model and Comparative Analysis of the Thermal Performance of Indirect Solar Dryer with and without PCM

Cited by 15 publications

References 25 publications

Thermal study of wave plate applications for indirect method solar drying collectors

Thermal study of wave plate applications for indirect method solar drying collectors

Manufacturing and Evaluating of Indirect Solar Dryers

Exergy, drying kinetics, and performance assessment of Solanum lycopersicum (tomatoes) drying in an indirect type domestic hybrid solar dryer ( ITDHSD ) system

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