Energy and exergy analysis of a flat-plate solar air heater coated with carbon nanotubes and cupric oxide nanoparticles embedded in black paint

2020 ◽  
Vol 250 ◽  
pp. 119501 ◽  
Author(s):  
Tarek Kh Abdelkader ◽  
Yanlin Zhang ◽  
Eid S. Gaballah ◽  
Shaowei Wang ◽  
Qiang Wan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Flat Plate ◽  
Exergy Analysis ◽  
Cupric Oxide ◽  
Oxide Nanoparticles ◽  
Solar Air Heater ◽  
Black Paint ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Cupric Oxide Nanoparticles

scholarly journals Energy and Exergy Analysis of a Flat-Plate Solar Air Heater Artificially Roughened and Coated with a Novel Solar Selective Coating

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 997
Author(s):  
Tarek Kh. Abdelkader ◽  
Qizhou Fan ◽  
Eid S. Gaballah ◽  
Shaowei Wang ◽  
Yanlin Zhang
Keyword(s):  
Exergy Analysis ◽  
Airflow Rate ◽  
Solar Air Heater ◽  
Solar Drying ◽  
Air Flow Rate ◽  
Black Paint ◽  
Selective Coating ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Condition C

Enhancements in heat transfer, and consequently the thermohydraulic performance of solar air heaters (SAHs), are necessary to widen and optimize their use in many applications such as solar drying or heating buildings. In this investigation, two techniques were used. A novel solar selective coating combined with broken arc ribs roughness was employed with a SAH and the evaluation of the energetic and exergetic performance was applied under four airflow working conditions compared to a smooth absorber SAH coated with the same coating. The results revealed that the Nusselt number of roughened SAH with the new coating exhibited a notable improvement compared to a smooth absorber SAH and a roughened SAH without a coating. Furthermore, the thermal efficiency increased with the increase in the air flow rate and the maximum rise was 18.8% compared to a smooth SAH. The highest increase in exergy was 51.6% with minimum values of exergy destruction and improvement potentials. In brief, the roughened SAH with 4% CNTs/CuO-black paint under the airflow rate of 0.0244 m3/s (condition C) exhibited the best energetic and exergetic performance.

scholarly journals Energy and exergy analysis of air based photovoltaic thermal (PVT) collector: a review

2019 ◽  
Vol 9 (1) ◽  
pp. 109 ◽  
Author(s):  
Ahmad Fudholi ◽  
Mariyam Fazleena Musthafa ◽  
Abrar Ridwan ◽  
Rado Yendra ◽  
Ari Pani Desvina ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Flat Plate ◽  
Solar Collector ◽  
Exergy Analysis ◽  
Exergy Efficiency ◽  
Pv Panel ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Flat Plate Solar Collector

<span lang="EN-US">Photovoltaic thermal (PVT) collectors convert solar radiation directly to both electrical and thermal energies. A PVT collector basiccaly combines the functions of a flat plate solar collector and those of a PV panel. This review presents thermodinamics fundamentals, descriptions, and previous works conducted on energy and exergy analysis of air based PVT collector. Studies in 2010 to 2018 of the energy and exergy analysis of air based PVT collectors are summarized. The energy and exergy efficiency of air based PVT collector ranges from 31% to 94% and 8.7% to 18%, respectively. In addition, flat plate solar collector is presented. Studies conducted on air based PVT collectors are reviewed.</span>

Energy and exergy analysis of a new solar air heater with latent storage energy

2014 ◽  
Vol 39 (27) ◽  
pp. 15266-15274 ◽  
Author(s):  
Salwa Bouadila ◽  
Mariem Lazaar ◽  
Safa Skouri ◽  
Sami Kooli ◽  
Abdelhamid Farhat
Keyword(s):  
Exergy Analysis ◽  
Solar Air Heater ◽  
Air Heater ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Storage Energy
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