Ventilation potential of an absorber-partitioned air channel solar chimney for diurnal use under Mexican climate conditions

Zavala-Guillén, I.; Xamán, J.; Hernández-Pérez, I.; Hernández-López, I.; Jiménez-Xamán, C.; Moreno-Bernal, Pedro; Sauceda, D.

doi:10.1016/j.applthermaleng.2018.12.074

Cited by 46 publications

(3 citation statements)

References 43 publications

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“…For the induced flow rate for ventilation, depending on the dimensions of the solar chimneys and the tested houses or buildings, the number of air changes per hour, denoted ''ACH,'' varied from a range of 6-15 for small test houses (Bansal et al, 2005;Khedari et al, 2000;Zavala-Guille´n et al, 2019) to 3.5-4.0 for real buildings (Asadi et al, 2016;Zavala-Guille´n et al, 2019). Those values of ACH comply with the minimum requirement of 1.3 recommended by ASHRAE standard 62-2 (ASHRAE, 2013).…”

Section: Solar Chimney For Natural Ventilation and Cooling Of Buildingsmentioning

confidence: 99%

Effects of wall proximity on the airflow in a vertical solar chimney for natural ventilation of dwellings

Nguyen

Wells

2020

Journal of Building Physics

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This study investigates performance of a vertical solar chimney, which absorbs solar energy and induces airflow for natural ventilation and cooling of dwellings, under effects of walls neighboring to its air channel. A computational fluid dynamics model was developed to predict induced flow rate and thermal efficiency of a vertical solar chimney with four types of nearby walls: a vertical wall to which the solar chimney was attached, a horizontal plate above the outlet of the air channel, a horizontal plate, and a horizontal wall below the inlet of the air channel. Examined factors included the heat flux in the air channel, the chimney height, the air gap, the distance of the walls, and the location of the heat source in the air channel. The results showed that effects of the wall proximity were modulated by the location of the heat source and the ratio G/ H between the air gap and the chimney height. Particularly, performance of the chimney was enhanced when the heat source was on the opposite side of the vertical wall and when G/ H was large.

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Section: Solar Chimney For Natural Ventilation and Cooling Of Buildingsmentioning

confidence: 99%

Effects of wall proximity on the airflow in a vertical solar chimney for natural ventilation of dwellings

Nguyen

Wells

2020

Journal of Building Physics

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“…From the literature review on the previous research in Indonesia on solar chimney, the researcher in this study found a research about passive application of solar induction ventilation for sustainable building in the equator line [13]. The method of this research is mathematic model to calculate the potentials of chimney ventilation in residential house.…”

Section: B State Of the Art In Indonesiamentioning

confidence: 99%

Potential of Sloped Solar Chimney for the Architectural Development of Sustainable Applied Technology Models for Passive Air Ventilation

Sugini¹,

Mufida²,

Risdiyono³

2021

JDBE

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This paper presents the result of research section for solar chimney (SC) model innovation as a passive cooling strategy. The research is motivated by sustainability issues, especially on the issue of environmental degradation due to uncontrolled use of air conditioning in urban environments. The vertical SC (VSC) model has been tested by the author et al., 2018. Although in general the presence of VSC has a significant effect on room temperature but it turns out that the VSC column height, that is assumed as the main determinant of performance, does not significantly influence [1]. The character of sun altitude in Indonesia is believed to cause the vertical chimney to be ineffective. For this reason, this study tested the Sloped Solar Chimney (SSC) model. The purpose of this study is to test whether: (1) SSC is better than VSC; (2) the sloping chimney thickness and internal chimney height give a difference in SC performance. The SSC model consists of three components: (1) internal vertical chimney inlet; (2) External 30â° slope and (3) external outlets. The test model is made from galvalum. Overall, the research method was carried out in two stages, namely: (1) testing the simulative models by using a software based on empirical data on the context of the urban housing environment being sampled; (2) testing the models in the field. However, only the result of the first stage is presented in this paper. The location of the urban environment of dense housing used as a case study was Jogoyudan, Yogyakarta. The empirical data input consists of 3 groups of houses: on the banks of the river, in the middle of a dense housing and on the edge of a neighborhood road. The modeling software used is CFD analysis. The analysis uses a comparative test statistic with a confidence level of 5%. From the results of the study it is found that SSC caused different thermal qualities in the test model room. The thickness of the sloping chimney also gives a difference in the thermal quality of space. However, this phase of the research has not been able to show significant effects due to the differences in height of the internal chimney.

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“…It is still unknown if a solar chimney can offer enough natural ventilation under typical weather conditions to fulfill the requirement of the airborne infection isolation room suggested by WHO, namely 6 ACH. Zavala-Guillen et al [19] obtained that a solar chimney can offer a 7.9-11.4 ACH natural ventilation for a 27 m 3 room under typical weather conditions in Mexico. Hashmi et al [20] optimized solar chimney design in a house based on energy saving.…”

Section: Introductionmentioning

confidence: 99%

Ventilating aged-care center based on solar chimney: Design and theoretical analysis

Wang¹,

Zhang²,

Wu³

et al. 2022

Energy and Buildings

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Ventilation potential of an absorber-partitioned air channel solar chimney for diurnal use under Mexican climate conditions

Cited by 46 publications

References 43 publications

Effects of wall proximity on the airflow in a vertical solar chimney for natural ventilation of dwellings

Effects of wall proximity on the airflow in a vertical solar chimney for natural ventilation of dwellings

Potential of Sloped Solar Chimney for the Architectural Development of Sustainable Applied Technology Models for Passive Air Ventilation

Ventilating aged-care center based on solar chimney: Design and theoretical analysis

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