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Survey of Sky Effective Temperature Models Applicable to Building Envelope Radiant Heat Transfer

机译：适用于建筑围护辐射辐射的天空有效温度模型的调查

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摘要

Radiative sky cooling is a result of heat loss by longwave emission toward the sky. For the use in hheat transfer applications and calculations, researchers have studied and proposed different sky effective temperature models and correlations since the early 1900s. One such use is for calculating a building's cooling loads, where the sky longwave exchange is an effective building energy balance element. Several factors influence the effective sky temperature, including location, ambient temperature, dew point temperature, and cloud cover. As a result, knowledge of current sky temperature models is important to better understand and characterize building heat transfer interactions, i.e., sky longwave radiative exchange. Therefore, the objective of this paper is to provide a comprehensive survey of existing sky temperature models from the available literature. The role of sky radiative exchange within building energy calculation is demonstrated. Moreover, the models are categorized by data input requirements and wide-ranging results are shown under various climate conditions. Finally, for selected models, a comparison of hourly sky radiation exchange from a horizontal surface is provided.
机译：辐射式天空降温是长波向天空辐射导致热量损失的结果。自1900年代初以来，研究人员就在热传递应用和计算中的应用进行了研究，并提出了不同的天空有效温度模型及其相关性。一种这样的用途是计算建筑物的制冷负荷，其中长波交换是一种有效的建筑物能量平衡元素。有几个因素会影响有效的天空温度，包括位置，环境温度，露点温度和云量。结果，了解当前的天空温度模型对于更好地理解和表征建筑物的传热相互作用，即天空长波辐射交换具有重要意义。因此，本文的目的是根据现有文献对现有的天空温度模型进行全面的调查。演示了天空辐射交换在建筑能耗计算中的作用。此外，根据数据输入要求对模型进行了分类，并显示了各种气候条件下的广泛结果。最后，对于选定的模型，提供了从水平面每小时一次的天空辐射交换的比较。

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  • 来源
    《ASHRAE Transactions》 |2015年第2期|351-363|共13页
  • 作者

    Salem Algarni; Darin Nutter;

  • 作者单位

    Mechanical engineering department, University of Arkansas, Fayette-ville, AR;

    Mechanical engineering department, University of Arkansas, Fayette-ville, AR;

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  • 正文语种 eng
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