Investigating the effect of well geometry on the daylight performance in the adjoining spaces of vertical top-lit atrium buildings

Ghasemi, Mohsen; Kandar, Mohd Zin; Noroozi, Maliheh

doi:10.1177/1420326x15589121

Cited by 23 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This paper employed the Radiance tool through Integrated Environmental Solution Virtual Environment (IES-VE) software to investigate daylighting performances of various interior layouts. IES-VE, as a multifunctional simulation software, can analyze energy efficiency in buildings from the preliminary stages of design [28]. The Radiance-IES simulation engine generates high-quality daylight modelling images compared to other daylight simulation tools [29].…”

Section: Methodsmentioning

confidence: 99%

Impact of Internal Shading Controls on Efficient Daylighting in Home-Office Workspaces in Tropical Climates

et al. 2021

View full text Add to dashboard Cite

Home office workspaces have significantly grown in residential sectors throughout the world. Nowadays, many people worldwide are forced to work from their housing units due to the outbreak of the COVID-19 pandemic. However, the existing residential buildings were only designed for living activities, not for desk-related tasks. This is more critical in tropical regions with the overabundance of indoor daylight and lack of external shadings on existing buildings. Despite the limitations for modifying the external facades, interior retrofit plays a major role in improving visual environments. Daylighting performances of various configurations, including internal shading devices, interior surfaces, and window films, were experimented with the Radiance-IES program. A field measurement of daylight was conducted in a home office room under the Malaysian tropical sky to validate the simulated results. This research proved that the existing residential buildings in the tropical climates had poor daylighting performance where the mean indoor illuminance could be over 10,000 lx. The combination of a light shelf, a partial blind, and the tinted window film could effectively 85% alleviate the excessive indoor daylight level. This configuration recorded a significant improvement in Useful Daylight Zone (around 300%), and Daylight Glare Probability was considerably reduced from 0.46 to 0.34.

show abstract

Section: Methodsmentioning

confidence: 99%

Impact of Internal Shading Controls on Efficient Daylighting in Home-Office Workspaces in Tropical Climates

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Radiance simulation engine in IES<VE> (Integrated Environmental Solution<Virtual Environment>) was used to evaluate daylight performances of various interior design parameters. IES<VE> is a multifunctional software to simulate green buildings and analyse energy efficiency in buildings from the preliminary phases of design [43,44]. Radiance-IES is a prominent daylighting performance tool used by specialists in different fields, such as architects, engineers, etc., that could be integrated with other simulation tools [45,46].…”

Section: Methodsmentioning

confidence: 99%

Adjustable Internal Shading for Home Office Daylighting in Tropical Climates

Mousavi¹,

Khan²,

Mohammadi³

2021

IJDNE

View full text Add to dashboard Cite

Home-based workspaces have considerably increased all over the world. Besides, the recent outbreak of the COVID-19 disease forced many people to work from their homes. However, existing residential apartment buildings (ERABs) had been designed for accommodation but not for office works. Low-quality visual environments in ERABs, which have no shading controls on their windows, are evident in tropical climates with extremely high solar radiation. Thus, interior retrofit is significant to provide visual comfort for users in ERABs with low flexibility for modification of their facades. Different interior design variables were simulated by the Radiance-based program to analyse daylighting in a closed-plan room. Before the simulation experiments, field measurement of daylight was performed under a tropical sky to validate the results, and the findings revealed significant Pearson correlations. This paper showed that ERABs are confronting extremely high indoor daylight quantity, up to 10,228 lx, and low quality with intolerable glare. An adjustable model of internal shading, including an integrated Venetian blind with a horizontal light shelf and the window films, was proposed to improve quantitative and qualitative performances of daylighting in tropical regions. This dynamic model could be adjusted to various positions based on daylighting conditions in the buildings. By comparing the simulation results of this model with the base model, indoor illuminance levels could successfully reduce from 32% to 86%; Illuminance Uniformity Ratio (IUR) and Target Daylight Illuminance (TDI) significantly improved up to 180% and 300%, respectively; Daylight Glare Probability (DGP) and CIE Glare Index (CGI) changed from intolerable to imperceptible status. Accordingly, the proposed model can considerably improve daylight quantity and quality in the test room during different times. This study concludes that the dynamic model of internal shadings could provide efficient daylighting, by decreasing the extremely high indoor illuminance and glare in the ERABs in tropical climates.

show abstract

“…IES-VE is a multi-functional simulation software that can be applied to energy analysis and green buildings from the beginning design stages [40]. IES-VE can efficiently simulate daylight conditions in a building through the Radiance-IES simulation engine.…”

Section: Methodsmentioning

confidence: 99%

“…Previous research showed that the Radiance-IES is the most comprehensive daylight simulation engine, compared with several daylight simulation programs, to measure quantitative and also qualitative performances of daylight in buildings [41]. Several studies on daylighting for tropical regions also used the Radiance-IES program [24,40,42,43].…”

Section: Methodsmentioning

confidence: 99%

Impact of Furniture Layout on Indoor Daylighting Performance in Existing Residential Buildings in Malaysia

Mousavi

Khan

Lim

2018

Journal of Daylighting

View full text Add to dashboard Cite

Currently, home-based computing workspaces have developed substantially all over the world, especially in Malaysia. This growing trend attracts computer workers to run a business from their residential units. Hence, visual comfort needs to be considered in addition to thermal comfort for home workers in their residential working rooms. While such rooms are always occupied with furniture, the layout of the furniture may influence the indoor daylighting distribution. Several various furniture layouts can be arranged in a residential working room. However, to have better generalisation, this study focused on the impacts of mostly-used-furniture-layouts (MUFLs) on indoor daylighting performance in residential working rooms. The field measurement was conducted in a typically furnished room under a tropical sky to validate the results of the simulation software under different sky conditions. Then, daylight ratio (DR), as a quantitative daylighting variable, and the illuminance uniformity ratio (IUR), CIE glare index (CGI), and Guth visual comfort probability (GVCP), as qualitative daylighting variables, were analysed through simulation experiments. In conclusion, by changing the furniture layout, daylight uniformity recorded the highest fluctuations in the case room among all variables. While various furniture layouts, in a residential working room in the tropics, may even slightly reduce the extreme indoor daylight quantity, they can worsen the indoor daylight quality compared to an unfurnished space. The paper shows that furniture as an interior design parameter cannot help to improve tropical daylighting performance in a building.

show abstract

Investigating the effect of well geometry on the daylight performance in the adjoining spaces of vertical top-lit atrium buildings

Cited by 23 publications

References 22 publications

Impact of Internal Shading Controls on Efficient Daylighting in Home-Office Workspaces in Tropical Climates

Impact of Internal Shading Controls on Efficient Daylighting in Home-Office Workspaces in Tropical Climates

Adjustable Internal Shading for Home Office Daylighting in Tropical Climates

Impact of Furniture Layout on Indoor Daylighting Performance in Existing Residential Buildings in Malaysia

Contact Info

Product

Resources

About