Analysis of winter thermal comfort conditions: street scenarios using ENVI-met model

Yılmaz, Sevgi; Külekçi, Elif Akpinar; Mutlu, Başak Ertem; Sezen, İşık

doi:10.1007/s11356-020-12009-y

Cited by 29 publications

(10 citation statements)

References 83 publications

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“…The optimization strategy is shown in Figure 6. Previous studies show that this method is feasible when the temperature difference between ENVI-met simulation results and measured results is less than 4 • C [33][34][35][36]. As shown in Figure 4a, the temperature change trend between the ENVI-met simulation results and field measurement results is similar.…”

Section: Optimization Strategymentioning

confidence: 59%

Environmental Effects from Pocket Park Design According to District Planning Patterns—Cases from Xi’an, China

et al. 2022

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Rapid urban expansion leads to the continuous deterioration of the urban thermal environment, which endangers the sustainable development of the city; meanwhile, countries all over the world are becoming increasingly interested in the mitigating effects of urban green spaces on heat islands. In this context, many studies show that pocket parks play an important role in optimizing the thermal environment of urban blocks, especially with the high-intensity development of urban blocks. Moreover, many cities in China have become mature, and it is difficult to open up large green areas. Therefore, to improve the urban thermal environment in summer, it is necessary to adapt to an efficient pocket-park design strategy in blocks. To consider the impact of block development intensity on the design strategy of pocket parks, three pocket parks in blocks with different floor-area ratios in the central area of Xi’an were selected as examples. This research compares the effects of tree density and green-space layout on the thermal environment in different floor-area ratio districts on a summer day using environmental simulation (ENVI-met). The results show that the design strategies of pocket parks in urban blocks with different development intensities are different. High tree density performs better from the perspective of improving the urban thermal environment. For the low and medium development intensity blocks, the effects of the open green space and closed green space are similar, while the open green space layout can significantly improve thermal comfort in high-intensity development blocks.

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Section: Optimization Strategymentioning

confidence: 59%

Environmental Effects from Pocket Park Design According to District Planning Patterns—Cases from Xi’an, China

et al. 2022

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“…This study requires integrative spatial assessment software to evaluate the impact of physical parameters within the urban street on the OTC. ENVI-met software has high sensitivity in estimating outdoor microclimate conditions [29,[71][72][73][74]. It employs a set of algorithms and mathematical models based on the fundamental laws of Computational Fluid Dynamics (CFD) to generate precise 3D simulations of microclimates [30].…”

Section: Microclimate Envi-met Softwarementioning

confidence: 99%

Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates

Necira,

Matallah,

Bouzaher

et al. 2024

Sustainability

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Improving urban walkability in the face of climate change is a critical challenge for urban designers. Street design strategies can mitigate heat stress and enhance pedestrian livability. Most previous studies conducted in hot climates recommend adopting deep canyons to improve summer conditions, overlooking the potential improvement of wide streets as essential structural elements of the urban fabric. This study was conducted in Biskra city, southern Algeria, where several mitigation strategies were applied to ‘Emir Abdelkader Boulevard’, as the main structural street inside the city, to create an optimal street model for arid climates. Five scenarios were developed based on three criteria: (Sc1) asymmetric profile northeast side (NES) > southwest side (SWS); (Sc2) asymmetric profile SWS > NES; (Sc3) cool paving; (Sc4) horizontal shading; and(Sc5) shading with a linear tree arrangement. ENVI-met software version 5.1.1 and the RayMan model were used to estimate the local climate conditions and outdoor thermal comfort levels based on the physiological equivalent temperature (PET). All scenarios reduced PET values across the street, with optimal reductions of −2.0 °C, −3.1 °C, −1.3 °C, −1.7 °C, and −1.2 °C in Sc1, Sc2, Sc3, Sc4, and Sc5, respectively. Concerning pedestrian areas, the optimal results durations were at the southwest side below the arcades’ sidewalks during peak hours: Sc2, Sc3, Sc4, Sc5 (2.2 °C–3 H, 2.3 °C–3 H, 2.4 °C–3 H, 2.5 °C–2 H). Sc1 performed best during daytime hours on the northeast side. The utilizing of these results can strongly help urban planners and landscape architects in creating climate-responsive streets that enhance citizens’ quality of life.

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“…In recent years, numerous psychophysics-based research methods have been developed to quantify people's subjective spatial perception [52]. A space quality evaluation system may also include indicators for acoustic and thermal comfort [53,54]. In conclusion, the study of urban-living street spatial quality can be conducted by incorporating a number of relevant factors from other disciplines to establish a more comprehensive evaluation standard.…”

Section: Limitations Of the Studymentioning

confidence: 99%

Evaluating the Spatial Quality of Urban Living Streets: A Case Study of Hengyang City in Central South China

Duan,

Liao,

Liu

et al. 2023

Sustainability

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Evaluating the spatial quality of a living street entails identifying and assessing the outdoor space that influences residents’ leisure and recreation, which may contribute to urban renewal. The application of multi-source data and deep learning technology enables an objective evaluation of large-scale spatial quality as opposed to the traditional questionnaire survey or experts’ subjective evaluation. Based on street view images, points of interest, and road network data, this study developed subjective and objective evaluation indicators for the central city of Hengyang using semantic segmentation and ArcGIS spatial analysis. This study then assigned weights to each indicator and calculated the spatial quality score for living streets. In addition, the subjective evaluations of the street view images were compared to test and verify the validation of the objective evaluation model. Finally, the study analyzed the accessibility within 500 m of the study area using Spatial Syntax and ArcGIS to overlay the low spatial quality score with the highest accessibility to identify the streets with the highest priority in the subsequent urban plan. The results indicate that the spatial quality of living in the west of Hengyang is higher than that in its northeast region. In addition, Xiao Xia Street, Guanghui Street, and Hengqi Road comprised the majority of the areas that required a priority update. Correspondingly, our research is expected to be a useful management tool for identifying urban street space issues and guiding urban renewal.

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Analysis of winter thermal comfort conditions: street scenarios using ENVI-met model

Cited by 29 publications

References 83 publications

Environmental Effects from Pocket Park Design According to District Planning Patterns—Cases from Xi’an, China

Environmental Effects from Pocket Park Design According to District Planning Patterns—Cases from Xi’an, China

Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates

Evaluating the Spatial Quality of Urban Living Streets: A Case Study of Hengyang City in Central South China

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