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Energy balance calculation of window glazings in the northern latitudes using long-term measured climatic data

机译:使用长期测量的气候数据计算北纬地区玻璃窗的能量平衡

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摘要

This article examines long-term patterns in energy performance of windows. It presents energy balance calculation results of window glazings in cardinal directions in the Estonian climate representing the Nordic climate in general. Measured climate input data of 43 years were used in addition to standard energy calculation years. The energy balance of five different glazing types was compared during the heating period of October to March. Calculations were made according to the EU standard ISO 13 790. It was found that southern facing glazings with reduced solar to thermal transmittance ratio higher than 0.63 m~2 K/ W can have positive energy balance over the sum of the heating period. Two of the selected glazings exceeded this level and achieved positive energy balance over the heating period in all years. On the other hand, glazings in the other cardinal directions predominantly were found to experience negative mean energy balance over the sum of the heating period. In the maximization of energy and economic efficiency, this sends the message to architects that, under certain conditions, optimization constraints are more important in some cardinal directions than in others. Such results support scientifically-informed decision making by practitioners at early design stages, for optimal energy efficiency.
机译:本文研究了窗户能量性能的长期模式。它提供了代表整个北欧气候的爱沙尼亚气候中基本方向的玻璃窗的能量平衡计算结果。除标准能源计算年外,还使用了43年的实测气候输入数据。在十月至三月的供暖期间比较了五种不同类型的玻璃的能量平衡。根据欧盟标准ISO 13 790进行了计算。发现降低了日光和热传递比的0.6%m〜2 K / W的南方饰面玻璃可以在整个加热期间保持正能量平衡。所选玻璃中有两个超过了这一水平,并在整个加热期间实现了正能量平衡。另一方面,发现在其他基本方向上的玻璃在整个加热期间总的来说具有负的平均能量平衡。在最大限度地提高能源和经济效率方面,这向建筑师传达了一个信息,即在某些条件下,优化约束在某些基本方向上比在其他基本方向上更为重要。这样的结果支持从业人员在设计的早期阶段就科学地做出明智的决策,以实现最佳的能源效率。

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