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首页> 外文期刊>ASHRAE Transactions >Cool Roof Use in Commercial Buildings in the United States: An Energy Cost Analysis
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Cool Roof Use in Commercial Buildings in the United States: An Energy Cost Analysis

机译：美国商业建筑中凉爽屋顶的使用：能源成本分析

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摘要

Solar radiation absorption and reflection on roof surfaces affects heating and cooling energy demand. Prior studies of energy costs associated with the long-term trend toward using highly reflective roof membranes, (i.e., "cool roofs") are reviewed and shown to have conflicting results in terms of the impact on heating costs. Also, the guidance for membrane reflectivity selection for building designers in terms of climate zone and/or heating and cooling degree days has not been clear. In this paper, both 2015 energy costs and insulation codes by state have been used to model the impact of cool roofs on building energy demand. Assuming natural gas as a heating energy source and electric air-conditioning, then the modeled cool roofs are shown to provide a net cost savings across all cities studied, even when long-term membrane reflectivity values are considered. When electric demand charges are factored in, there is little correlation between the magnitude of savings and location climate.
机译：屋顶表面的太阳辐射吸收和反射会影响加热和冷却能量的需求。回顾了与使用高反射率的屋顶膜（即“凉爽的屋顶”）的长期趋势相关的能源成本的先前研究，并显示出对加热成本的影响有矛盾的结果。同样，关于建筑物设计师在气候区和/或加热和冷却度日方面的膜反射率选择的指导还不清楚。在本文中，2015年能源成本和各州的隔热规范均已用于模拟凉爽屋顶对建筑能源需求的影响。假设以天然气作为加热能源和电动空调，那么即使考虑到长期的膜反射率值，所建模的凉爽屋顶也能在所有研究城市中节省净成本。考虑到电力需求费用后，节约的幅度与所在地气候之间几乎没有关联。

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