Finned Single-pass Solar Air Heaters with Wire Mesh as an Absorber Plate

Autor:	M. Ghazal, Fuat Egelioğlu, M. F. El-Khawajah
Rok vydání:	2014
Předmět:	geography Work (thermodynamics) Thermal efficiency Materials science geography.geographical_feature_category Renewable Energy Sustainability and the Environment Mass flow Thermodynamics Air mass (solar energy) Inlet Volumetric flow rate Mass flow rate Composite material Porous medium
Zdroj:	International Journal of Green Energy. 12:108-116
ISSN:	1543-5083 1543-5075
DOI:	10.1080/15435075.2014.889016
Popis:	Single-pass solar air heaters (SAHs) with two and six fins attached and packed with wire mesh layers were experimentally investigated. Wire mesh layers were used between the fins in the place of an absorber plate. The effects of air mass flow rate on the outlet temperature and thermal efficiency were studied. The results showed an increase in the thermal efficiency as the air mass flow rate was increased. The range of the mass flow rate used in this work was between 0.0121and 0.042 kg/s. It was found that for the same mass flow rate the SAH having six fins has higher efficiency compared to the system that has two fins. The maximum efficiencies for the SAHs were obtained at the mass flow rate of 0.042 kg/s. The maximum efficiencies for the six-finned and two-finned SAHs were 79.81% and 71.8%, respectively. In addition, the maximum temperature difference between the inlet and the outlet, ΔT, for the SAH with six fins exceeded the two-finned SAH for the same mass flow rates. The maximum ΔT was 51.1°C for the...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2d2ebef21a742254022de0679d65de97 https://doi.org/10.1080/15435075.2014.889016 Zobrazit plný text záznamu