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Interval-Based Design Rules for Fixed External Louvers in Glass Curtain Wall Office Buildings for Early-Stage Sustainable Design: A Case Study in Tianjin
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Interval-Based Design Rules for Fixed External Louvers in Glass Curtain Wall Office Buildings for Early-Stage Sustainable Design: A Case Study in Tianjin
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Interval-Based Design Rules for Fixed External Louvers in Glass Curtain Wall Office Buildings for Early-Stage Sustainable Design: A Case Study in Tianjin
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Journal Article
Interval-Based Design Rules for Fixed External Louvers in Glass Curtain Wall Office Buildings for Early-Stage Sustainable Design: A Case Study in Tianjin
2026
Overview
Fixed external louvers are widely used to improve the environmental performance of glass curtain wall office buildings, yet existing studies more often report preferred solutions than transferable decision ranges for early-stage design. This study develops interval-based design rules for a standard-floor prototype of a point-supported glass curtain wall office building in Tianjin, a representative cold-climate city in China. A seven-variable design space integrating spatial-scale and shading variables was evaluated for 3000 Latin hypercube samples in a Rhino–Grasshopper–Honeybee workflow linked to Radiance and EnergyPlus, using Tianjin’s typical meteorological year data and GB 55015—2021-based office schedules, including an occupant density of 10 m[sup.2]/person and occupied heating/cooling setpoints of 20/26 °C. Raw-sample statistics, Bootstrap-based stability testing, and surrogate-model-assisted continuous-response analysis were used to identify dominant variables, single-objective preferred intervals, and a neutral equal-weight baseline compromise zone. Under a neutral equal-weight baseline adopted for early-stage comparison, the compromise interval is concentrated around 20–25°, with 15–30° as a practical starting range, while alternative weighting scenarios show directional shifts toward the prioritized objective.
Publisher
MDPI AG
