Performance evaluation of a flat-plate solar collector filled with porous metal foam: Experimental and numerical analysis

Saedodin, Seyfolah; Zamzamian, Seyed Amir Hossein; Nimvari, Majid Eshagh; Wongwises, Somchai; Jouybari, H. Javaniyan

doi:10.1016/j.enconman.2017.09.072

Cited by 104 publications

(29 citation statements)

References 49 publications

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“…One of the extensively studied improvements to Solar Air Heater (SAH) is the use of double pass airflow up and down its absorber plate to reduce heat losses, increase the air path inside the solar collector and thus increase its performance [9]. Saedodin 2017 et al [10] studied the impact of porous metal foam on solar collector output numerically and experimentally. The researchers studied the effects of copper metal foam on thermal performance and the results showed that using the porous substrate improves the amount of Nusselt and average thermal efficiency up to 82% and 18.5% respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermal Investigations of Double Pass Solar Air Heater with Two Types of Porous Media of Different Thermal Conductivity

Jalil¹,

Ali

2021

ETJ

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This study describes an experimental investigation of the thermal efficiency of stainless steel mesh and steel wool as a porous medium in the lower channel of a double pass solar air heater. An experimental setup was planned and developed. Various types of porous media with high thermal conductivity and with different porosities have been tested. The effects of the porosity of wire mesh, the thermal conductivity of porous media, mass flow rate, and the intensity of radiation have been studied. Experimental results show that thermal efficiency with using porous media is greater than without using porous media. When used steel wool as a porous medium, the thermal efficiency reached 79.82 percent while it can be achieved 76. The percent by using stainless mesh as porous material. The reduction in porosity increasing thermal efficiency. The thermal efficiency of multi-pass solar air collector when used steel wool as porous media is 6, 12.6 and31.7percent higher than without porous media at porosity 98.75, 97.5, and 96.25percent. While it can increase 8.1 and 28.5 percent at porosity 97.875 and 95.75 percent when using stainless steel as porous media.

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Section: Introductionmentioning

confidence: 99%

Thermal Investigations of Double Pass Solar Air Heater with Two Types of Porous Media of Different Thermal Conductivity

Jalil¹,

Ali

2021

ETJ

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“…In general, benefiting from porous materials with high thermal conductivity can lead to increased heat mixing, resulting in increased heat transfer rate and better efficiency in solar collectors (non‐direct radiation absorption through the surface absorber). To enhance the heat transfer using porous media, numerous numerical and experimental studies have focused on the use of porous materials in flat plate and parabolic collectors. For instance, Saedodin et al experimentally and numerically examined the effect of metallic foam (partially/totally filled) on the performance of an FPSC.…”

Section: Introductionmentioning

confidence: 99%

“…To enhance the heat transfer using porous media, numerous numerical and experimental studies have focused on the use of porous materials in flat plate and parabolic collectors. For instance, Saedodin et al experimentally and numerically examined the effect of metallic foam (partially/totally filled) on the performance of an FPSC. Their numerical model showed that the optimal dimensionless thickness of the metal foam layer is greater than 0.8.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

Esmaeili

Karami

Delfani³

2020

Int J Energy Res

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The current research proposes the idea of using water-saturated metal oxide foams and water-based nanofluids as solar absorber in the direct absorption solar collectors (DASCs). Specifically, the novel solar collector design utilizes copper oxide (CuO) porous foam and nanoparticle with high optical properties and is expected to have enhanced thermal performance than the conventional collectors utilizing pure water. The finite volume technique is used to solve the governing equations of flow and heat transfer in the radiative participating media. Also, to establish the reliability and accuracy of numerical solutions, the obtained results are compared with the corresponding numerical and experimental data. The computations are carried out for different nanoparticle volume fractions, foam pore sizes, working fluid mass flow rates, and both porous layer thicknesses and positions (inserted at the lower or upper wall of the collector). It is found that the efficiency of DASC partially/fully filled with metal oxide foam is maximized when the collector is completely filled with it. Compared with the water flow, the numerical results show that the collector efficiency using CuO nanofluid and metal oxide foam is improved by up to 26.8% and 23.8%, respectively. Moreover, considering the second law of thermodynamics, the use of CuO nanofluids in the DASC seems to be more effective than the use of CuO porous foam. K E Y W O R D Sdirect absorption solar collector, efficiency, metal oxide foam, nanofluid, second law of thermodynamics

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“…Several researchers have looked at enhancing the thermal efficiency of an SAH by filling the flow channel with porous materials. [26][27][28] An analytical and experimental study by Lansing et al 29 used a diagonal porous layer inside the flow channel of an SAH. The results showed that the insertion of this porous layer could augment the thermal performance of an SAH by 102%.…”

Section: Introductionmentioning

confidence: 99%

Performance augmentation of a solar air heater using herringbone metal foam fins: An experimental work

Taha

Farhan

2020

Int J Energy Res

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Summary The transformation of massive solar irradiation into applicable energy forms like thermal energy plays an essential role in sustainable energy. Solar air heaters (SAH) are a way to transform solar irradiance into heat energy appropriate for human utilization. In the present study, experimental work was implemented to assess the thermo‐hydraulic efficiency of a single duct single glazed SAH with herringbone metal foam fins attached beneath the absorber plate. Three corrugation angle values (30, 60, 90°) for the herringbone fins were examined. Metal foam fins porosity assists the air flows across the fin structure to exploit more heat from the absorber plate. Air flows were circulated by a centrifugal fan, their speeds varying between 0.01 to 0.05 m3/s. The experiments were implemented under realistic outdoor weather conditions in Baghdad, Iraq, from January to March 2020. The results showed that when the corrugation angle increases, the useful energy decreases. At an air flowrate of 0.05 m3/s, maximum useful energy at noon is 709, 588, and 442 W/m2 for corrugation angles of 30, 60, and 90°, respectively. The maximum outlet air temperature for a finned SAH with a corrugation angle of 30° is 60.4°C against 42.1°C for an unfinned SAH, at 0.01 m3/s air flowrate. Maximum thermal efficiency obtained by a finned SAH with a corrugation angle of 30° was 87.7% at an air flowrate of 0.04 m3/s, against 29.4% for an unfinned SAH at an air flowrate of 0.05 m3/s.

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Performance evaluation of a flat-plate solar collector filled with porous metal foam: Experimental and numerical analysis

Cited by 104 publications

References 49 publications

Thermal Investigations of Double Pass Solar Air Heater with Two Types of Porous Media of Different Thermal Conductivity

Thermal Investigations of Double Pass Solar Air Heater with Two Types of Porous Media of Different Thermal Conductivity

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

Performance augmentation of a solar air heater using herringbone metal foam fins: An experimental work

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