Parametric analysis of the thermal behavior of a single-channel solar chimney
| Autor: | J. Serrano-Arellano, J. Arce, M.M. Villar-Ramos, E.V. Macias-Melo, K.M. Aguilar-Castro, L.M. López-Manrique, I. Hernández-Pérez, H.P. Díaz-Hernández |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Solar chimney Parametric analysis Renewable Energy Sustainability and the Environment 020209 energy Airflow Airspeed Enclosure 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Thermal 0202 electrical engineering electronic engineering information engineering General Materials Science 0210 nano-technology Air gap (plumbing) Parametric statistics |
| Zdroj: | Solar Energy. 209:602-617 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2020.08.072 |
| Popis: | This work presents the design, construction, instrumentation and thermal evaluation of a single-channel solar chimney under a warm-humid climate. A solar chimney (0.8 m width and 2 m length) with a capacity for varying the air gap (0–0.28 m), the inclination angle (0 − 90°), and the amount of energy absorbed by the absorber plate. A parametric study was performed with a total of 60 tests under laboratory conditions. A maximum temperature difference of 16.7 °C was obtained for an angle of 15° and a 0.075 m air gap, and when the air gap was varied, the highest air speed was 0.38 m s−1. The results show that a solar chimney can be used as a passive ventilation system, where up to 5 times more air flow can be removed in an enclosure, with a maximum air change rate (ACH) of 27.11 h−1, and a maximum efficiency of 88.9%. The data obtained can be used not only to select the configuration of a chimney but also for other applications where heating or the removal of air is required, such as for drying or in ventilated roofs. |
| Databáze: | OpenAIRE |
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