Scholarlink

<p>The vertical expansion of cities has increased the impervious areas by integrating a large portion of tall building curtain wall facades. Wind-driven rain (WDR) load on the facades has amplified urban rainfall runoff. This factor highlights facade areas to be further explored as new catchment areas for vertical rainwater harvesting (VRWH), as well as mitigating their negative impacts on rainfall runoff. This study aims to explore the predictability of WDR load quantity for VRWH on building facades. Due to the lack of in-situ WDR dataset, a one-year in-situ measurement is conducted for predictive modelling of the WDR intensity (R<sub>wdr</sub>). WDR coefficients of the semi-empirical models, i.e., the ISO standard 15927–3 (α) and ASHRAE standard 160P (F<sub>L</sub>), are refined afterwards to improve the predictive performance of the models. The results showed significant improvement; the ISO model predicted annual harvesting R<sub>wdr</sub> (mm/h) up to 40.91&#xa0;mm/h per square metre, equivalent to 29% for potable and 70% for non-potable usage reduction. The ASHRAE model predicted annual harvesting R<sub>wdr</sub> (mm/h) up to 63.24&#xa0;mm/h (per sqm), equivalent to 44% for potable and 109% for non-potable usage reduction, at heights greater than 50&#xa0;m.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental Measurement and Predictive Modelling of Wind-driven Rainwater Collections from Building Facades Towards New Vertical Rainwater Harvesting Systems in Tropical Urban Setting

  • 期刊论文

  • 发表日期：

    2025年8月8日

查看全文
  • Mozhgan Samzadeh,
  • Nazli Bin Che Din,
  • Norhayati Mahyuddin,
  • Zunaibi Abdullah

摘要

The vertical expansion of cities has increased the impervious areas by integrating a large portion of tall building curtain wall facades. Wind-driven rain (WDR) load on the facades has amplified urban rainfall runoff. This factor highlights facade areas to be further explored as new catchment areas for vertical rainwater harvesting (VRWH), as well as mitigating their negative impacts on rainfall runoff. This study aims to explore the predictability of WDR load quantity for VRWH on building facades. Due to the lack of in-situ WDR dataset, a one-year in-situ measurement is conducted for predictive modelling of the WDR intensity (Rwdr). WDR coefficients of the semi-empirical models, i.e., the ISO standard 15927–3 (α) and ASHRAE standard 160P (FL), are refined afterwards to improve the predictive performance of the models. The results showed significant improvement; the ISO model predicted annual harvesting Rwdr (mm/h) up to 40.91 mm/h per square metre, equivalent to 29% for potable and 70% for non-potable usage reduction. The ASHRAE model predicted annual harvesting Rwdr (mm/h) up to 63.24 mm/h (per sqm), equivalent to 44% for potable and 109% for non-potable usage reduction, at heights greater than 50 m.

Graphical Abstract