Preliminary design method for naturally ventilated buildings using target air change rate and natural ventilation potential maps in the United States

Hiyama, Kyosuke; Glicksman, Leon R.

doi:10.1016/j.energy.2015.06.026

Cited by 46 publications

(27 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the primary steps of design process, prediction of building performance has an effective influence on the future performance of buildings and their energy consumption (1)(2)(3)(4). It is essential to use these insights in the early design stages to improve the efficiency of buildings.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the relationship between depth of overhang and amount of daylight indicators in office buildings of Kerman city

Kermani

Nasrollahi

Mahdavinejad

2018

Environ Health Eng Manag

View full text Add to dashboard Cite

Background: The use of daylight in offices has become an effective strategy to improve the quality of indoor space and energy efficiency. There is enough potential to have daylight autonomy in Kerman as a city with more than 300 sunny days a year. Therefore, this study aimed to investigate the relationship between facades configuration and the amount of daylight in office buildings of Kerman. Methods: This study was carried out based on the simulation in DesignBuilder software (DBS). In this study, 36 typical rooms, with the same physical characteristics (4 m×6 m×4 m), with window-to-wall ratio (WWR) between 10-90% with four overhang depths (0, 0.5, 1 and 1.5 m) were modeled. Results: Based on daylight utilization, the results indicate that an optimal WWR for a room with 1 m overhang depth ranged from 50% to 70%. Also, the room with 0.5 m overhang depth and without overhang, had suitable daylight while WWR was at least 50%, but the room with 1.5 m depth would not encounter glare problem even when WWR was 90%. Conclusion: The results confirm that overhang depth and WWR have significant effect on daylight parameters such as daylight factor (DF), work plane illuminance (WPI), and WPI ratio. Hence, these insights can be useful for designers to design buildings with lower energy use and higher daylight quality, when enough light is provided in office rooms.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of the relationship between depth of overhang and amount of daylight indicators in office buildings of Kerman city

Kermani

Nasrollahi

Mahdavinejad

2018

Environ Health Eng Manag

View full text Add to dashboard Cite

show abstract

“…The increase of additional cooling effect becomes small when the amount of air change rate reaches the design target value. According to a case study in a previous study [20], no obvious increase in cooling effect is observed when the air change rate attains 10 ac/h. Thus, the calculated free-cooling effect at an infinite air change rate is regarded as the natural ventilation potential.…”

Section: The Definition Of the Target Air Change Ratementioning

confidence: 92%

“…In this context, the authors developed a preliminary design method for natural ventilation using the criteria of target air change rate and natural ventilation potential in an earlier study [20]. The authors defined the target air change rate as the maximum gradient of the cooling effect increase from natural ventilation.…”

Section: Introductionmentioning

confidence: 99%

Target Air Change Rate and Natural Ventilation Potential Maps for Assisting with Natural Ventilation Design During Early Design Stage in China

Wen

Hiyama

2018

Sustainability

Self Cite

View full text Add to dashboard Cite

To achieve the desired free-cooling effect, the preliminary design of natural ventilation should be combined with discussions of building shape during the early design stages. In an earlier study a method for supporting strategic design of natural ventilation was developed that relied on the target air change rate and natural ventilation potential. The authors defined target air change rate as a point where the gradient of the increase in the cooling effect from natural ventilation reached a maximum. To verify the viability of the proposed method, the robustness of the target air change rate is examined in this paper using a typical Chinese office building model with representative operation conditions in five climate zones of China. The impacts of insulation level, thermal capacity, and window-to-wall ratio (WWR) on the target air change rate are investigated. In addition, the target air change rate and natural ventilation potential maps in China are created to inform rough natural ventilation strategies in the early design stages. According to the evaluation results, simple natural ventilation strategies are sufficient for buildings with relatively low internal gains to realize the required small target air change rate, regardless of climate conditions. Under moderate internal gains condition, well-organized and examined natural ventilation strategies are required in the Hot Summer and Warm Winter zone and the Temperate zone. However, these strategies are particularly suggested for cities in the Temperate zone with a warm climate due to the higher cooling potential. Moreover, elaborate natural ventilation design is recommended for buildings in cold climates when the internal gains are increased to a high level.

show abstract

“…There are several factors in between that reduce the possibility of designing buildings according to natural ventilation in order to increase the level of indoor thermal comfort to the maximum that need to be considered in urban planning and city development [15]. It is obvious that, in different climates, there are various factors that affect indoor thermal comfort in buildings; thus, regulations are changing according to the climate [16]. It is clear that, to understand the level of thermal comfort taking natural ventilation and building surroundings into consideration, climate conditions should be analyzed as a first step.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Built Environment on Natural Ventilation in a Historical Environment: Case of the Walled City of Famagusta

Arfaei

Hançer

2019

Sustainability

View full text Add to dashboard Cite

Passive building is among the most important subjects in architecture today. The key factor in terms of a solution is related to the level of renewable energy in buildings. Natural ventilation is among the effective factors in indoor thermal comfort. Virtual simulations prepare a basis for reliable and fast result outcomes. Computer Fluid Dynamics (CFD) software is available thanks to advances in technology and mathematical calculation to simulate projects with any conditions. This paper presents thermal comfort reduction where, in the simulation, the closed environment is considered rather than the individual building with no surroundings. In order to reach the conclusion, a comparison between a single building simulation and two locations in the walled city of Famagusta in the Turkish Republic of Northern Cyprus, a historical settlement, is provided to illustrate the changes according to the closed environment conditions. According to the results, if energy consultants aim to present realistic energy data in order to upgrade the level of sustainability of buildings, it is important to consider the effect of the closed environment on natural ventilation in their calculation.

show abstract

Preliminary design method for naturally ventilated buildings using target air change rate and natural ventilation potential maps in the United States

Cited by 46 publications

References 21 publications

Investigation of the relationship between depth of overhang and amount of daylight indicators in office buildings of Kerman city

Investigation of the relationship between depth of overhang and amount of daylight indicators in office buildings of Kerman city

Target Air Change Rate and Natural Ventilation Potential Maps for Assisting with Natural Ventilation Design During Early Design Stage in China

Effect of the Built Environment on Natural Ventilation in a Historical Environment: Case of the Walled City of Famagusta

Contact Info

Product

Resources

About