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Comparison of the Energy Conversion Efficiency of a Solar Chimney and a Solar PV-Powered Fan for Ventilation Applications

1
Sustainable Process Integration Laboratory—SPIL, NETME Centre, Brno University of Technology, Brno 61669, Czech Republic
2
Energy Institute, Faculty of Mechanical Engineering, Brno University of Technology, Brno 61669, Czech Republic
*
Author to whom correspondence should be addressed.
Energies 2018, 11(4), 912; https://doi.org/10.3390/en11040912
Received: 16 February 2018 / Revised: 4 April 2018 / Accepted: 8 April 2018 / Published: 12 April 2018
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Abstract

A study into the performance of a solar chimney and a solar photovoltaic (PV)-powered fan for ventilation applications was carried out using numerical simulations. The performance of the solar chimney was compared with that of a direct current (DC) fan powered by a solar PV panel. The comparison was carried out using the same area of the irradiated surface—the area of the solar absorber plate in the case of the solar chimney and the area of the solar panel in the case of the photovoltaic-powered fan. The two studied cases were compared under various solar radiation intensities of incident solar radiation. The results indicate that the PV-powered fans significantly outperform solar chimneys in terms of converting solar energy into the kinetic energy of air motion. Moreover, ventilation with PV-powered fans offers more flexibility in the arrangement of the ventilation system and also better control of the air flow rates in the case of battery storage. View Full-Text
Keywords: building ventilation; solar energy; solar chimney; solar photovoltaics; DC fan; energy conversion building ventilation; solar energy; solar chimney; solar photovoltaics; DC fan; energy conversion
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Klimeš, L.; Charvát, P.; Hejčík, J. Comparison of the Energy Conversion Efficiency of a Solar Chimney and a Solar PV-Powered Fan for Ventilation Applications. Energies 2018, 11, 912.

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