Solar chimneys: simulation and experiment

Afonso, Clito; Oliveira, Armando C.

doi:10.1016/s0378-7788(99)00038-9

Cited by 205 publications

(86 citation statements)

References 6 publications

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“…In England, it has been reported that energy consumption of mechanical ventilation systems, such as pumps, fans etc in office building, constitutes about 20 % of the total energy consumption 1) . In related research conducted by J. Hummelaarda et al 2) , results have been documented of studies that compare temperature and CO 2 and simulation, Clito Afonso et al 3) , have verified the ventilation performances of the solar chimney, as adopted by this study. In addition, Jyotirmay Marthura et al 4) , have examined an experimental model of the solar chimney and reported the results for the appropriate size of the solar chimney in accordance with the ratio between the height of the heat absorbers and the gap between the glass and the absorber.…”

Section: Introductionsupporting

confidence: 64%

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Ventilation Performance by the Concentration Change of HCHO and TVOC with Three Models of Two Ventilation Systems and One Natural Condition

Cho

Kim

Park³

et al. 2009

Journal of Asian Architecture and Building Engineering

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This study has prepared three models with two different types of ventilation systems including a natural ventilation system with a solar chimney installed, a mechanical ventilation system equipped with a fan which has a volume flow rate of 0.736 m 3 /min, and one type of natural condition that depends only on infiltration. The ventilation performance of each model was then measured and evaluated by analyzing the amount of concentration change of HCHO and TVOC. The results of this analysis showed that the concentration reduction rate of HCHO and TVOC were 38.9% and 68.4%, respectively, in the natural ventilation system that had a solar chimney, while concentrations were 31.5% and 64.9%, respectively, in the mechanical ventilation system that was equipped with a fan.

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Section: Introductionsupporting

confidence: 64%

“…In the experimental model that adopted a natural ventilation system equipped with a solar chimney, HCHO was measured at 934.4 μ g/m 3 , while TVOC was measured at 1,981.4 μ g/m 3 . In the experimental model equipped with a mechanical ventilation system, HCHO was measured at 970.2 μ g/m 3 , and TVOC was measured at 1,469.0 μg/m .…”

mentioning

confidence: 99%

Ventilation Performance by the Concentration Change of HCHO and TVOC with Three Models of Two Ventilation Systems and One Natural Condition

Cho

Kim

Park³

et al. 2009

Journal of Asian Architecture and Building Engineering

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“…The experiment that was carried out by C. Alfonso and A. Olivera [5] makes it possible to broaden the knowledge on justified use of solar chimneys. A test model was made in Porto, in Portugal.…”

Section: The Examples Of Real Models Of Solar Chimneysmentioning

confidence: 99%

Increasing natural ventilation using solar chimney

Nakielska

Pawłowski

2017

E3S Web Conf.

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Abstract.At a time when much attention is paid to the problem of energy saving is looking for new technical solutions, among others in the construction industry. At present, searching new solutions is a worldwide trend in creating buildings. Those solutions enable a comfortable use of building structures in harmony with natural environment and ensure reducing energy consumption. Solar chimneys, which facilitate the gravity ventilation by using solar energy, may be a solution to the problem. In hot climates solar chimney has been applied in the process of passive cooling of a building. In temperate zones and cold is used to assist natural ventilation. The problem of the solar chimney is not popular in Poland. Construction in Bydgoszcz two research positions, enabled the analysis of the impact of solar chimneys on the thermal comfort of rooms. This article presents experimental studies on solar chimney located in Poland. The analysis of the flow of air in the room during the day have been measured using two testmodels situated on the 3.1 building of UTP University of Science and Technology at 7 Kaliska street in Bydgoszcz.

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“…The location and function can: (i) continue the structure of a conventional chimney [4] (ii) be combined with exterior walls Setting a translucent panel at the outermost part of the building structure allows the solar radiation to penetrate, and then there will be an air channel between the exterior wall and the newly-set translucent panel. The sunshine can directly irradiate on the exterior wall, which makes the air around the exterior wall create a thermal buoyancy flow [5].…”

Section: Open Accessmentioning

confidence: 99%

Energy Saving Evaluation of the Ventilated BIPV Walls

Lai

Lin

2011

Energies

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This study integrates photovoltaic (PV) system, building structure, and heat flow mechanism to propose the notion of ventilated Building-Integrated Photovoltaic (BIPV) walls. The energy-saving potential of the ventilated BIPV walls was investigated via engineering considerations and computational fluid dynamics (CFD) simulations. The results show that the heat removal rate and indoor heat gain of the proposed ventilated BIPV walls were dominantly affected by outdoor wind velocity and airflow channel width. Correlations for predicting the heat removal rate and indoor heat gain, the reduction ratio of the indoor heat gain, CO 2 reduction, and induced indoor air exchange are introduced.

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Solar chimneys: simulation and experiment

Cited by 205 publications

References 6 publications

Ventilation Performance by the Concentration Change of HCHO and TVOC with Three Models of Two Ventilation Systems and One Natural Condition

Ventilation Performance by the Concentration Change of HCHO and TVOC with Three Models of Two Ventilation Systems and One Natural Condition

Increasing natural ventilation using solar chimney

Energy Saving Evaluation of the Ventilated BIPV Walls

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