Finding the best configuration for a solar air heater by design and analysis of experiment

Nowzari, Raheleh; Mirzaei, Noorbakhsh; Aldabbagh, L.B.Y.

doi:10.1016/j.enconman.2015.04.058

Cited by 23 publications

(12 citation statements)

References 20 publications

(22 reference statements)

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“…The analysis of variance has different applications, but it has been used in few studies. For instance, Nowzari et al employed ANOVA to develop a statistical model to find the best configuration (highest thermal efficiency) for a newly designed solar air heater [25]. The main objective of this type of study is to determine which factors (controllable or uncontrollable) have the greatest influence on the output.…”

Section: System Evaluation Using the Analysis Of Variance (Anova)mentioning

confidence: 99%

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2021

TFAMENA

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In this study, the thermal performance of a newly designed solar air heater was examined using a thoughtfully designed and analysed experimental methodology. In the analysis, three factors (collector type, bed height, and airflow rate) were adjusted and their effects on the performance of the system were evaluated; additionally, mesh layers were used to act as absorber plates. The single and counter flow collectors were also examined using different bed heights (3 cm, 5 cm, and 7 cm) at various airflow rates (0.011 kg/s, 0.035 kg/s, and 0.043 kg/s). Subsequently, the results obtained from this experiment were analysed using the analysis of variance (ANOVA) method. According to the data obtained from the ANOVA method and pairwise mean comparisons, the best configuration that yields the highest thermal performance was the one with counter flow passage (3 cm bed height, and 0.043 kg/s air flow rate). Moreover, a 99% confidence interval was utilized in estimating the lower and upper bounds of thermal performance for each system setup.

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Section: System Evaluation Using the Analysis Of Variance (Anova)mentioning

confidence: 99%

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2021

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“…They approved the exactness of this hypothetical technique through a trial strategy. Nowzari et al 31 found that the collector had the most noteworthy assortment effectiveness when the collector angle was 28.4 . Mzad et al 32 hypothetically and experimentally concentrated on improving a preliminary solar air heater execution for different tilts, glazing and protection materials.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of domestic solar air heating system using V-shaped baffles – An experimental study

Rajendran¹,

Ramasubbu²,

Karthick

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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An experimental study has been carried out to enhance a solar air heater’s performance by integrating artificial roughness through baffles on the absorber plate. In this paper, the thermal and energy matrices analysis of a Solar Air Heater (SAH) roughened with V up perforated baffles have been investigated. The effect of various mass flow rates on the SAH was analyzed with and without baffles. Experimental outputs like outlet air temperature, useful energy (heat) gain and thermal efficiency were evaluated to confirm the performance improvement. The baffled absorber plate SAH was found to give the maximum thermal efficiency and useful energy gain of 89.3% and 1321.37 W at a mass flow rate of 0.0346 kg/s, 13% and 12% higher than SAH without baffle. This result showed that the V up-shaped ribs in flow arrangement provide better thermal performance than smooth plate SAH for the parameter investigated. Energy matrices analysis and carbon dioxide mitigation of the SAH system were also analyzed.

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“…Due to its simple design, low maintenance cost, and economic feasibility, a solar air heater is more widely used compared to other solar systems [1]. A common type of solar air heaters is the flat-plate solar air heater that utilizes solar energy to heat air [2]. In general, these types of solar air heaters are used for drying or curing concrete and clay in the construction industry [3,4], or drying fruits and vegetables within the food industry [5].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have proposed the use of porous materials instead of a metal sheet for the latter mentioned aim [10]. In another study, a perforated Plexiglas was used instead of a normal cover to improve the cooling process of the cover and to enhance the performance of the collector [2]. Yang et al designed a solar air heater including offset trip fins and developed a numerical model to optimize the system [11].…”

Section: Introductionmentioning

confidence: 99%

Selecting the Optimal Configuration for a Solar Air Heater Using the Grey–Taguchi Method

2020

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In this study, a typical Grey-Taguchi method has been applied in order to select the optimal configuration of a solar air heater to achieve optimum performance. The analysis is performed for different system configurations in terms of collector type, mass flow rate, and cover type. The Grey-Taguchi method, which requires the minimum possible numbers of the demanded experiments for accomplishing a robust statistical decision for a given experimental problem, has been employed, and temperature difference and thermal performance have been used as the two main criteria. It is found that by considering the temperature difference criterion, at a mass flow rate of 0.011 kg/s, the best configuration is the double-pass solar collector owning a one-fourth pierced Plexiglas cover with a distance of 60 mm between the centers of the holes. On the other hand, by considering the thermal performance as the criterion, the best configuration at a mass flow rate of 0.032 kg/s is found to be the double-pass solar collector holding a half-pierced Plexiglas cover and a distance of 60 mm distance between the centers of the holes. Finally, once both factors are taken into consideration, the optimal configuration suggested by the method is the double-pass collector with a one-quarter pierced Plexiglas cover. The method also suggests keeping a 30 mm distance between the centers of the holes and applying 0.032 kg/s of the mass flow rate to achieve the highest performance.

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Finding the best configuration for a solar air heater by design and analysis of experiment

Cited by 23 publications

References 20 publications

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Performance analysis of domestic solar air heating system using V-shaped baffles – An experimental study

Selecting the Optimal Configuration for a Solar Air Heater Using the Grey–Taguchi Method

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