Theoretical and experimental investigation of the thermal performance of a double exposure flat-plate solar collector

Nikolić, Novak; Lukić, Nebojša

doi:10.1016/j.solener.2015.06.038

Cited by 33 publications

(4 citation statements)

References 25 publications

(38 reference statements)

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“…These results show that the solar collector double glazing and double pass conducts to a thermal efficiency superior to the one of an air plane solar collector simple pass, or single glazing. Our results are close to those of Ihaddadene et al, [14] and Nikolić et al, [16]. Results reported by theses authors show that the thermal efficiency of an air plane solar collector double glazing is above 45%.…”

Section: Validationsupporting

confidence: 92%

“…They exist under two principal configurations: concentrators and plane collectors. The latter, being able to use water or the air as thermal agent, are present in several research tasks [11][12][13][14][15][16][17], which relate to the optimization of the thermal effectiveness. The reduction of post-harvest losses can be obtained by using a modular solar drier, for which the air is preheated by the solar collectors.Thus there are several configurations of the plane solar collector with air, such as single glazing and double glazing with single pass or double passes.Preliminary studies have found that for a double glazing collector, the useful heat flux is greater than that of a single glazing unit [7,18].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Geometric Parameters on the Thermal Performances of a Double Air Pass Solar Collector

Abraham¹,

Ghiaus²

2019

SJEE

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This work focused on the numerical study of the thermal performance of a solar collector in order to improve the indirect solar drying of fruit in an environment with high solar potential. It aims to contribute to the reduction of post-harvest losses observed during periods of high production. From the retained physical model, an equivalent electrical scheme has been established and energy balance was applied to each slice of the model using the nodal method. The obtained different equations were discretized using the implicit method of finite differences, and solved by the iterative Gaussian Pivot method written in FORTRAN program. The obtained results showed that, from April to June (mangoes harvest period in Ngaoundere city) the raining period in Adamawa Region, the solar air collector that length to width ratio is between 2 and 3, is sufficient to carry out indirect solar drying of fruits with forced convection. The outlet air temperature of the solar collector was between 45 and 60°C with an average value of 50°C, and the thermal efficiency was between 65 and 95% with an average value of 80%. Double glazing improves efficiency of the solar air collector for a small footprint.

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Section: Validationsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Influence of Geometric Parameters on the Thermal Performances of a Double Air Pass Solar Collector

Abraham¹,

Ghiaus²

2019

SJEE

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“…It represents the third common polymer materials after Polyethylene and Polyphenylene. Approximately forty million tons per year produces [19].…”

Section: Polyphenylene Ether Polystyrene Blend and Polyethylenementioning

confidence: 99%

Polymer Flat Plate Solar Collectoer: A Review

Hashim,

Daham,

Abed

2024

TURCOMAT

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A brief description on polymer flat plat solar collector manufacturing, design, and applications are given in this work. The main obstacles that face these collectors type, and how can be processed are also discussed. It is found that polymer low thermal conductivity, and degradation are the most essential difficulties in this industry, and increase heat transfer area and additives are the best common solutions. While stabilizers can be added to increase polymer life time.

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“…To improve the efficiency of solar energy, there are extensive studies and efforts have focused on improving the heat efficiency and optimizing the structure of solar air collectors [12][13][14][15]. A more effective approach is to maximize the contact between the circulating air and the absorber plate through forced turbulence in double channel, including V-corrugated or sine-wave absorber plates, with fins, baffles or ribs [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Thermal Characteristics and Parametric Analysis of an Improved Solar Wall

Zhao

Zhu

et al. 2021

Applied Sciences

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Solar air collectors installed on buildings can significantly reduce conventional energy consumption in winter and summer. However, some problems arise in the utilization process, such as overheating, inconvenient operation control and low energy efficiency, etc. This work is a parametric analysis focusing on the automatic control and thermal efficiency improvement of the solar wall. An improved color-changing solar wall integrated with automatic control components, such as a photoelectric fan and temperature-controlled damper, was proposed in this paper. Based on the experimental data, the average daily heat output of the color-changing solar wall is 1.08 MJ per unit floor area on clear days in winter and the average thermal efficiency is 56.8%. Meanwhile, a quantitative analysis was carried out based on monitoring experiments for evaluating the thermal characteristic of automatic control components. Furthermore, in order to improve the thermal performance of the solar wall, parametric analysis was performed by numerical simulation. Results from this paper can provide a theoretical basis for the application of solar air collectors in modern buildings.

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Theoretical and experimental investigation of the thermal performance of a double exposure flat-plate solar collector

Cited by 33 publications

References 25 publications

Influence of Geometric Parameters on the Thermal Performances of a Double Air Pass Solar Collector

Influence of Geometric Parameters on the Thermal Performances of a Double Air Pass Solar Collector

Polymer Flat Plate Solar Collectoer: A Review

Thermal Characteristics and Parametric Analysis of an Improved Solar Wall

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