Effect of natural ventilation mode on thermal comfort and ventilation performance: Full-scale measurement

Omrani, Sara; Hansen, Veronica Garcia; Capra, Bianca R.; Drogemuller, Robin

doi:10.1016/j.enbuild.2017.09.061

Cited by 101 publications

(34 citation statements)

References 36 publications

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“…In addition, the temperature difference that can be achieved between indoor and outdoor air temperature is higher. In this regard, a field study was carried out in Australia for two days which revealed that for prevailing wind speed up to 3.0 m/s and the mean outdoor air temperature around 26 • C, while using the cross-ventilation type showed the achievement of thermal comfort for indoor conditions 70% of the time compared with 1% in case of using single-side type [31]. Another field study conducted in Cyprus for 1 month showed, in the case of depending on cross-ventilation, the indoor conditions meet thermal comfort conditions up to 40% of the time, while single-sided ventilation achieved only about 2% of the time [32].…”

Section: Influencing Factors On Thermal Comfortmentioning

confidence: 99%

Quantifying Fenestration Effect on Thermal Comfort in Naturally Ventilated Classrooms

et al. 2021

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This study seeks to evaluate thermal comfort in naturally ventilated classrooms to draw sustainable solutions that reduce the dramatic energy consumed in mechanically ventilated spaces. Passive ventilation scenarios are generated using alternations of openings on the windward and leeward sides to evaluate their effects on thermal comfort. Twenty-eight experiments were carried in Bahrain during winter inside an exposed classroom, the experiments were grouped into five scenarios namely: “single-inlet single-outlet” SISO, “single-inlet double-outlet” SIDO, “double-inlet single-outlet” DISO, “double-inlet double-outlet” DIDO and “single-side ventilation” SSV. The findings indicate that single-side ventilation did not offer comfort except at high airspeed, while comfort is attained by using cross-ventilation at ambient temperature between 21.8–26.8 °C. The temperature difference between monitored locations and the inlet is inversely proportional to the number of air changes per hour. The DISO scenario accomplishes the lowest temperature difference. Using cross-ventilation instead of single-side ventilation reduces the temperature differences between 0.5–2.5 °C and increases airspeed up to three folds. According to the measured findings, the DISO cross-ventilation scenario is a valid sustainable solution adaptable to climatic variation locally and beyond with zero-energy consumption and zero emissions.

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Section: Influencing Factors On Thermal Comfortmentioning

confidence: 99%

Quantifying Fenestration Effect on Thermal Comfort in Naturally Ventilated Classrooms

et al. 2021

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“…A double-skin envelope is one of these techniques, which utilizes the addition of an extra layer to the original facade or roof to improve the indoor thermal performance that consequently increases the thermal acceptance [28][29][30][31][32]. Besides, well-designed natural ventilation strongly improves indoor comfort temperatures and shows a wide range of comfortable indoor temperatures [33,34].…”

Section: Atrium Design and Thermal Performancementioning

confidence: 99%

“…Natural ventilation has been considered as an effective strategy to improve indoor air quality and thermal comfort [33,44]; thus, this strategy is supposed to be designed according to the exterior climatic conditions, which vary from one region to another [45]. Since it mainly depends on the air movement between the outdoors and the indoors, achieving comfortable thermal conditions requires higher ventilation rates than improving the quality of indoor air does [37], and designing the building openings by placing the inlets and the outlets defines the air movement inside the space [46].…”

Section: Atrium Thermal Pefrormancementioning

confidence: 99%

Thermal Comfort Improvement for Atrium Building with Double-Skin Skylight in the Mediterranean Climate

Sokkar¹,

Alibaba²

2020

Sustainability

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Atria are added to buildings for their aesthetical, environmental, and economic benefits; the appropriate atrium design can enhance an atrium’s thermal performance and the adjacent spaces’ temperatures. However, inappropriate design decisions cause thermal discomfort and consequently, higher energy consumption. Since the Mediterranean climate has diverse climatic conditions around the year, a central atrium with a top-lit skylight is recommended, but during the summer period it can cause overheating, and the insertion of shading elements shrinks the lighting performance: thus, the atrium skylight design is supposed to improve thermal comfort without affecting the lighting level. This study investigated the improvement of thermal performance in the atrium building by the implementation of a double-skin skylight (DSS) to enhance the atrium thermal performance without shading. The research conducted computer simulations with Environmental Design Solutions (EDSL) Tas software sequentially. The study prepared various design strategies, and different proposals were tested and compared in terms of indoor temperatures, with reference to American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE-55). The implementation of DSS achieved an average of 77% comfort in working hours around the year with different opening percentages according to the outdoor conditions. Moreover, results show that changing the DSS glazing materials did not affect the thermal performance of the atrium.

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“…Full-scale measurements (Omrani et al 2017) were performed to investigate the effect of natural ventilation mode (i.e., single-sided, cross ventilation) on thermal comfort and ventilation performance. Results highlighted a significantly better performance of cross ventilation over single-sided ventilation.…”

Section: Physical-physical Interactionsmentioning

confidence: 99%

Interactions Among Health Risk Factors and Decision-Making Process in the Design of Built Environments

Dovjak

Kukec

2019

Creating Healthy and Sustainable Buildings

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The identification of interactions among parameters of health risk factors is a crucial step for the effective assessment and prevention of problems in unhealthy built environments. This chapter introduces the health risk management process in the context of the designs of healthy built environments (Sect. 4.1). In Sects. 4.2-4.3, comprehensive descriptions of all detected interactions among health risks and their parameters that have harmful impacts on user health and wellbeing are defined. Section 4.2 provides a detailed analysis of single group interactions between:

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Effect of natural ventilation mode on thermal comfort and ventilation performance: Full-scale measurement

Cited by 101 publications

References 36 publications

Quantifying Fenestration Effect on Thermal Comfort in Naturally Ventilated Classrooms

Quantifying Fenestration Effect on Thermal Comfort in Naturally Ventilated Classrooms

Thermal Comfort Improvement for Atrium Building with Double-Skin Skylight in the Mediterranean Climate

Interactions Among Health Risk Factors and Decision-Making Process in the Design of Built Environments

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