A Review on Experimental Analysis of Double Pass Solar Air Heater With Baffled Absorber Plate

Singh, Vivek; Singh, A. P.; Verma, Ashish

doi:10.31142/ijtsrd3556

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Considering the results of storage efficiency material and the ease of handling, sand in aluminium cans were selected for sludge drying. These results agree with Subhaschandra Singh et al (2018), (Subhaschandra Singh et al, 2018) who got a higher thermal storage efficiency using sand in cans than pebbles. Sand used for thermal storage was also observed to increase the operation average temperature at experiments made by (Omara & Kabeel, 2014).…”

Section: Evaluation Of the Thermal Storage Materialssupporting

confidence: 90%

Solar drying of sludge of biofouling washing coming from the aquaculture industry.

Poblete,

Valencia-Ceballo,

Cortes

et al. 2023

JER

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The sludge produced in the aquaculture industry has an amount of moisture traditionally dried using the open sun drying method, which results in problems such as rewetting during rainfall events, the arrival of vectors and pollution. It is the first research where has been studied the use of a solar air heater with fins of different heights, a single and double-pass solar air heater and different thermal storage materials to enhance the efficiency of a solar dryer for drying sludge coming from the culture of Argopecten purpuratus, as a sustainable energy strategy. When using higher fins, the solar air heater requires less solar energy. With 8 cm high fins, the sludge got a constant mass when 58,567 kJ of solar energy was received in the dryer. When the height of the fins was 6, 4, and 0, a complete dried sludge was obtained with 71,394; 71,255; and 92,523 kJ of accumulative solar energy, respectively. Fin size variations result in significant differences in the drying process. The highest performance of the solar air heater was obtained with the run involving 8 cm high fins, and the performance decreased as the fins got smaller. The performance results were 6.7%, 11.0%, 21.2% and 27.9% for heights of 0, 4, 6 and 8 cm, respectively. In the evaluation of single and double pass in the solar air heater, the first one gets at the exit of the device 3.48 °C above environmental temperature, with an average thermal efficiency of 8.51% and the double pass SAH get an output temperature of 5.22 °C above the environmental temperature, and an average thermal efficiency was 16.53%. Also, different materials were evaluated as thermal storage, obtaining thermal efficiencies for heat storage were 0.88 for sand in aluminium cans, 0.49 for pebbles and 0.48 for rocks. Using these materials in a thermal storage system maintains the output temperature above the input temperature when there is low or null solar radiation. The thermal storage system permits a higher moisture reduction ever after before the sunshine, promoting a dry in the non-sunny hours.

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Section: Evaluation Of the Thermal Storage Materialssupporting

confidence: 90%

Solar drying of sludge of biofouling washing coming from the aquaculture industry.

Poblete,

Valencia-Ceballo,

Cortes

et al. 2023

JER

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“…Another solution in the literature that fixed this limitation stated above came by introducing a turbulent flow regime of air to take advantage of the increased forced convective heat transfer coefficients in this regime [21]. A turbulent flow regime achieved with high flow rates.…”

Section: Resultsmentioning

confidence: 99%

Smart agriculture through using cost-effective and high-efficiency solar drying

Çiftçioğlu

Kadırgan

et al. 2020

Heliyon

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Background: Challenges must be handled in an integrated manner when addressing food security and climate change. More efficient designs for food production systems, as well as their logistics, are needed in order to increase food production and to reduce emissions intensity. Specifically, any enhancements done on this purpose would contribute to mitigating climate change. Five important dimensions are being considered in smart agriculture: food security, availability, accessibility, utilization, and stability. Scope and approach: Food supply-demand chain can seriously be effected by uncontrolled population growth. Thus, any perspective to solve these uncontrolled conditions can have a positive impact. Especially giving emphasis on reduction of food losses via expoloring various ways of production, or increasing productivity, or ensuring food security are effective ways for solutions. For example, the use of solar drying for agricultural, marine or meat products is very important for preservation, thus minimizing food losses. However, traditional sun drying is a relatively slow process. Also, the product quality worsens due to several factors: microorganism growth, enzymatic reactions, insect infestations. It is known that utilizing solar energy involves several factors that need attention. Thus, a lot of effort is directed toward improving solar energy technology for drying processes. Key findings and conclusion: This study presents a smart agriculture design for drying using low cost and highlyefficient solar selective absorber. The system is based on an air heating flat plate solar absorber. Levelized cost of heat (LCOH) for the prototype using solar renewable energy is calculated and compared with the fossil fuel energy sources; natural gas, electricity, and liquified petroleum gas (LPG). In addition; a comparison of the costs for air collectors using various selective absorbers; unglazed or glazed, is presented. It is shown that solar energy, in the long run, will be more advantageous compared to fossil fuels.

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A Review on Experimental Analysis of Double Pass Solar Air Heater With Baffled Absorber Plate

Cited by 2 publications

References 8 publications

Solar drying of sludge of biofouling washing coming from the aquaculture industry.

Solar drying of sludge of biofouling washing coming from the aquaculture industry.

Smart agriculture through using cost-effective and high-efficiency solar drying

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