Yan Jiang’s research while affiliated with The University of Kitakyushu and other places

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Publications (3)


Curved mesh shading in architectural practice: (a) IBM Building [22]; (b) Messe Basel New Hall [23]; (c) King Fahad National Library [24]; (d) Bruno Bischofberger’s Art Complex [25].
Research workflow.
Laboratory room photos: (a) Outdoor; (b) Indoor.
Curved mesh shading diagram.
Typical cities and their climate analysis: (a) Representative cities in China’s five climate zones; (b) Monthly average temperature and solar irradiance of typical cities.

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A Study on the Daylighting, Energy Consumption, and Climate Adaptability of Curved Mesh Shading Based on the Parametric Performance Design Method
  • Article
  • Full-text available

June 2024

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111 Reads

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1 Citation

Yan Jiang

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Zongxin Qi

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Shenglin Ran

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[...]

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Weijun Gao

Building shading forms are becoming increasingly diversified, driven by both building performance requirements and architectural aesthetics. The application of computer technology in shading design and performance evaluation is becoming increasingly popular. This study adopted a parametric performance design method and created a one-click workflow for parametric curved mesh shading design and performance evaluation based on the Grasshopper platform and Ladybugtools. Applying this workflow, this paper takes five typical cities in different climate zones in China as examples to analyze the impact rules of curved mesh shading parameters (blade width, number of horizontal grids, and number of vertical grids) on building daylighting and energy consumption and explore the application potential of curved mesh shading. This study found that curved mesh shading has the best potential to improve daylighting in Harbin and can increase the annual average UDIa (300~3000 lux) by 7.42%. In Guangzhou, curved mesh shading has the highest potential for energy saving, which can reduce annual energy consumption by 14.8%. This study can provide theoretical, methodological, and data support for the optimal design of curved mesh shading.

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A Study on the Effect of Dynamic Photovoltaic Shading Devices on Energy Consumption and Daylighting of an Office Building

February 2024

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70 Reads

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9 Citations

Photovoltaic shading devices (PVSDs) have the dual function of providing shade and generating electricity, which can reduce building energy consumption and improve indoor daylighting levels. This study adopts a parametric performance design method and establishes a one-click simulation process by using the Grasshopper platform and Ladybugtools. The research focuses on the effect of dynamic PVSDs on daylighting and energy consumption in an office building in Qingdao. The optimal configuration of PVSDs for each month under three dynamic strategies (rotation, sliding, and hybrid) is determined here. Additionally, different control strategies and fixed PVSDs are compared to clarify the impact of various control strategies on daylighting and energy consumption. The findings reveal that, compared to no shading, dynamic PVSDs in the rotation strategy, sliding strategy, and hybrid strategy can achieve energy savings of 32.13%, 47.22%, and 50.38%, respectively. They can also increase the annual average UDI by 1.39%, 2.8%, and 3.1%, respectively. Dynamic PVSDs can significantly reduce the energy consumption of office buildings in Qingdao while improving indoor daylighting levels. A flexible control strategy that adapts to climate change can significantly improve building performance. This research can provide theoretical, methodological, and data support for the application of the PVSD in cold-climate regions in China.


A Study on the Effect of Dynamic Photovoltaic Shading Devices on Energy Consumption and Daylighting of an Office Building

February 2024

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80 Reads

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7 Citations

Photovoltaic shading devices (PVSDs) have the dual function of providing shade and generating electricity, which can reduce building energy consumption and improve indoor daylighting levels. This study adopts a parametric performance design method and establishes a one-click simulation process by using the Grasshopper platform and Ladybugtools. The research focuses on the effect of dynamic PVSDs on daylighting and energy consumption in an office building in Qingdao. Through simulation, the study calculates the monthly energy consumption and useful daylight illuminance (UDI) under different inclination angles and installation heights of PVSDs. And the optimal configuration of PVSDs for each month under three dynamic strategies (rotation, sliding, and hybrid) is determined. Additionally, different control strategies and fixed PVSDs are compared to clarify the impact of various control strategies on daylighting and energy consumption. The findings reveal that, compared to no shading, dynamic PVSDs in rotation strategy (with an installation height of 0 m), sliding strategy (with an inclination angle of 20°), and hybrid strategy can achieve energy savings of 32.13%, 47.22%, and 50.38%, respectively. They can increase the annual average UDI by 1.39%, 2.8%, and 3.1%, respectively.

Citations (2)


... The results of the analyses will be individualised to the analysed building and its location, so providing general guidelines regarding the parameters of the shields is pointless. The analyses may be made easier by the use of parametric design, e.g. using the Rhinoceros and Grasshopper [2,3] programmes together with Octopus [4] or Ladybugtools [5], in which the shape of covers can be automatically optimised based on the given parameters. Research has shown that horizontal blinds are more effective than vertical ones, and the greatest shade was obtained from mesh-shaped covers (Fig. 2.A) [6] or curved mesh [5] (Fig. 2.B) because the combination of vertical and horizontal shading causes shading even at a low angle of incidence of sunlight [7]. ...

Reference:

Effectiveness of Screens Shading Opaque Facades in Terms of Building Thermal Modernisation
A Study on the Daylighting, Energy Consumption, and Climate Adaptability of Curved Mesh Shading Based on the Parametric Performance Design Method

... Solar energy harvesting was the most studied RES, as has been mentioned in refs. [29][30][31][32][33][34][35][36][37][38][39][40][41][44][45][46][47][48][49], which accounted for 90% of the reviewed papers from the time interval between 2013 and 2024, highlighting the predominant use of PV technologies. PV technologies used include dynamic PV shading devices, solar tracking PV modules, and rooftop PV installation. ...

A Study on the Effect of Dynamic Photovoltaic Shading Devices on Energy Consumption and Daylighting of an Office Building