Performance of a new solar air heater with packed-bed latent storage energy for nocturnal use

Bouadila, Salwa; Kooli, Sami; Lazaar, Mariem; Skouri, Safa; Farhat, Abdelhamid

doi:10.1016/j.apenergy.2013.04.062

Cited by 132 publications

(33 citation statements)

References 39 publications

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“…They validated their theoretical results with the available experiments. The results of an analytical and experimental investigation of a new SAH with latent storage collector using spherical capsules as a packed bed absorber by Bouadila et al [19] demonstrated that the useful energy which can be used during the 11 hours of the off-sun time comes out to be 200 W/m 2 . In addition, the daily energy efficiency varies between 32% and 45%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Slit Spacing and Bed Height on the Thermal Performance of Slit-Glazed Solar Air Heater

Mousavi

Egelioğlu

2017

International Journal of Photoenergy

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The thermal performances of three slit-glazed solar air heaters (SGSAHs) were investigated experimentally. Three SGSAHs with different bed heights (7 cm, 5 cm, and 3 cm) were fabricated with multiple glass panes used for glazing. The length, width, and thickness of each pane were 154 cm, 6 cm, and 0.4 cm, respectively. Ambient air was continuously withdrawn through the gaps between the glass panes by fans. The experiments were conducted for four different gap distances between the glass panes (0.5 mm, 1 mm, 2 mm, and 3 mm) and the air mass flow rate was varied between 0.014 kg/s and 0.057 kg/s. The effects of air mass flux on the outlet temperature and thermal efficiency were studied. For the SGSAH with bed height of 7 cm and glass pane gap distance of 0.5 mm, the highest efficiency was obtained as 82% at a mass flow rate of 0.057 kg/s and the air temperature difference between the inlet and the outlet (ΔT) was maximum (27°C) when the mass flow rate was least. The results demonstrate that for lower mass flow rates and larger gaps, the performance of SGSAH with a bed height of 3 cm was better compared to that of others. However, for higher mass flow rates, the SGSAH with 7 cm bed height performed better.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of the Slit Spacing and Bed Height on the Thermal Performance of Slit-Glazed Solar Air Heater

Mousavi

Egelioğlu

2017

International Journal of Photoenergy

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“…A remedy for the low thermo-physical properties of air when used as a working fluid is proposed by Benli [15]. Bouadila et al [16,17] conducted an experimental study to evaluate the thermal performance of a new solar air heater using a packed bed of spherical capsules with a latent heat storage system. The Unglazed Transpired Solar Collector (UTC), as a suitable device for preheating the outside air, has been studied by using exergy analysis in Golneshan and Nemati [18].…”

Section: Flat-plate Collectorsmentioning

confidence: 99%

Exergy analysis on solar thermal systems: A better understanding of their sustainability

et al. 2016

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a b s t r a c tThis paper presents a review of exergy analysis of solar thermal systems. It includes both various types of solar collectors and various applications of solar thermal systems. As solar collectors are an important technology when sustainability is considered, exergy analysis, which gives a more representative performance evaluation, is a valuable method to evaluate and compare possible configurations of these systems. It should be noted that this review is based on literature published in the last two years.

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“…It has also been found that the present correlations show much better agreement as compared to the values predicted by earlier correlations for such systems, it substantiates that the thermo-hydraulic performance of a solar air heater is a strong function of mass flow rate, geometrical parameters and porosity of the wire mesh screen. Table 1 Recent work on packed bed solar air heaters [21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation on thermo-hydraulic performance of wire screen matrix packed solar air heater

Verma

Varshney

2015

Sustainable Energy Technologies and Assessments

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Performance of a new solar air heater with packed-bed latent storage energy for nocturnal use

Cited by 132 publications

References 39 publications

Experimental Study of the Slit Spacing and Bed Height on the Thermal Performance of Slit-Glazed Solar Air Heater

Experimental Study of the Slit Spacing and Bed Height on the Thermal Performance of Slit-Glazed Solar Air Heater

Exergy analysis on solar thermal systems: A better understanding of their sustainability

Parametric investigation on thermo-hydraulic performance of wire screen matrix packed solar air heater

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