Experimental study for natural ventilation on a solar chimney

Arce, J.; Jiménez, M.J.; Guzmán, Javier; Heras, M.R.; Álvarez, G.; Xamán, J.

doi:10.1016/j.renene.2009.04.026

Cited by 153 publications

(43 citation statements)

References 15 publications

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“…In addition it showed that solar assisted ventilation was more efficient than only opening of windows. Another work by Arce, J. et al [8] examined the thermal performance on a fullscale solar chimney that revealed that it was possible to achieve average airflow rates of 177 m 3 /h, which is sufficient for natural ventilation.…”

Section: Heat Exchangermentioning

confidence: 99%

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Onyango

2012

WIT Transactions on Ecology and the Environment

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The US government has set a target of reducing CO 2 emissions by 20% below the 2005 targets by the year 2020. Literature review reveals that residential buildings contribute over 20% of the total emissions mainly used for space heating, cooling, water heating and lighting. In hot humid climates, the concern is mainly for cooling and hot water that account for over 50% of the total residential energy consumption in South Florida as pointed out by Fairey and Parker (in Updated Miscellaneous Electricity Loads and Appliance Energy

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Section: Heat Exchangermentioning

confidence: 99%

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Onyango

2012

WIT Transactions on Ecology and the Environment

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“…Studies reveal that the height [6], chimney position [7], type of absorber [8], width and depth of cavity [15], inclination angle [16], and the insulation or thermal mass in the solar chimney [17] are the primary factors that should be considered when designing a solar chimney. The above analysis indicated that solar chimney possesses the potential of cooling effect and cooling load reduction, and the potential can be enhanced by optimizing the designing factors.…”

Section: Introductionmentioning

confidence: 99%

Thermal Storage Capacity and Night Ventilation Performance of a Solar Chimney Combined with Different PCMs

Lü

Gao

2017

International Journal of Photoenergy

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Thermal storage capacity and airflow rate of a solar chimney combined with different PCMs are numerically studied during nighttime. PCMs with phase change temperatures of 38°C, 44°C, 50°C, and 63°C are selected in this numerical study. Results show that the maximum average ventilation rate of 610 kg/m 2 and maximum thermal storage of 4750 kJ/m 2 are achieved at the phase change temperature of 38°C. However, for phase change temperature of 63°C, night ventilation does not occur under the identical conditions. The findings reveal that a lower phase change temperature can increase the chargeability (and therefore the dischargeability) of a solar chimney, since a higher phase change temperature demands higher solar radiation intensity and longer charging time for a solar chimney. For PCM with a phase change temperature of 44°C, most of the heat stored in PCM is lost to ambient through glass cover by radiation and only a small portion is used for heating the air within air channel.

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“…The results showed that the efficiency of the chevron pattern is superior to that of the flat plate absorber under the considered configurations and operating conditions. Arce et al [19] investigated the thermal performance of a solar chimney on a full-scale model under real meteorological conditions for natural ventilation. The present study revealed that the airflow rate through the solar chimney was significantly influenced by a pressure difference between exit and inlet, caused by temperature gradient and wind velocity.…”

Section: Introductionmentioning

confidence: 99%

“…In general, most studies have investigated the effects of different parameters on airflow rate and thermal performance. A review of the literature [15][16][17][18][19][20][21] indicates that the collected air temperature in building ventilation was in the range 40-70°C, and the collector efficiency of 20-75% with various parameters.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

Lee

Hung

Lin³

et al. 2015

Applied Energy

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Experimental study for natural ventilation on a solar chimney

Cited by 153 publications

References 15 publications

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Simulation of a passive ground-coupled cooling system for a room in a hot humid climate

Thermal Storage Capacity and Night Ventilation Performance of a Solar Chimney Combined with Different PCMs

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

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