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首页> 外文期刊>Building and Environment >An integrated empirical and modeling methodology for analyzing solar reflective roof technologies on commercial buildings
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An integrated empirical and modeling methodology for analyzing solar reflective roof technologies on commercial buildings

机译：用于分析商业建筑的太阳能反射屋顶技术的综合经验和建模方法

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摘要

Buildings impact the environment in many ways as a result of both their energy use and material consumption. In urban areas, the emission of greenhouse gases and the creation of microclimates are among their most prominent impacts so the adoption of building design strategies and materials that address both these issues will lead to significant reductions in a building's overall environmental impact. This report documents the energy savings and surface temperature reduction achieved by replacing an existing commercial building's flat roof with a more reflective 'cool roof surface material. The research methodology gathered data on-site (surface temperatures and reflectivity) and used this in conjunction with the as-built drawings to construct a building energy simulation model. A 20-year cost benefit analysis (CBA) was conducted to determine the return on investment (KOI) for the new cool roof construction based on the energy simulation results. The results of the EnergyPlus™ simulation modeling revealed that reductions of 1.3-1.9% and 2.6-3.8% of the total monthly electricity consumption can be achieved from the 50% cool roof replacement already implemented and a future 100% roof replacement, respectively.rnThis corresponds to a saving of approximately $22,000 per year in energy costs at current prices and a consequent 9-year payback period for the added cost of installing the 100% cool roof. The environmental benefits associated with these electricity savings, particularly the reductions in environmental damage and peak-time electricity demand, represent the indirect benefits of the cool roof system.
机译：建筑物由于其能源消耗和材料消耗而在许多方面影响环境。在城市地区，温室气体的排放和小气候的产生是其最突出的影响，因此采用能够解决这两个问题的建筑设计策略和材料将大大降低建筑的整体环境影响。该报告记录了通过以更具反射性的“凉爽屋顶表面材料”代替现有商业建筑的平屋顶所实现的节能和表面温度降低。该研究方法现场收集了数据（表面温度和反射率），并将其与竣工图结合使用以构建建筑能耗模拟模型。进行了为期20年的成本效益分析（CBA），根据能源模拟结果确定了新的凉爽屋顶结构的投资回报率（KOI）。 EnergyPlus™仿真模型的结果表明，已经实施的50％的凉爽屋顶更换和未来的100％的屋顶更换分别可以减少每月总用电量的1.3-1.9％和2.6-3.8％。按当前价格计算，每年可节省约22,000美元的能源成本，并为安装100％凉爽屋顶的额外成本带来9年的投资回收期。与这些节电措施相关的环境效益，尤其是减少环境破坏和高峰时段用电需求，代表了凉爽屋顶系统的间接收益。

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  • 来源
    《Building and Environment》 |2010年第2期|453-460|共8页
  • 作者

    J.H.Jo; J.D. Carlson; J.S. Golden; H. Bryan;

  • 作者单位

    School of Sustainability, Arizona State University, P.O. Box 875502 21 E. 6th Street, Suite. 120, Tempe, AZ 85287-5502, USA;

    National Center of Excellence on SMART Innovations for Urban Climate & Energy, Arizona State University, Tempe, AZ, USA;

    School of Sustainability, Arizona State University, P.O. Box 875502 21 E. 6th Street, Suite. 120, Tempe, AZ 85287-5502, USA National Center of Excellence on SMART Innovations for Urban Climate & Energy, Arizona State University, Tempe, AZ, USA;

    School of Architecture, Arizona State University, Tempe, AZ, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cool roof systems; albedo; urban heat island (UHI) effect; building energy modeling;

    机译：凉爽的屋顶系统;反照率城市热岛效应建筑节能建模;

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