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A comparison of thermal comfort conditions in four urban spaces by means of measurements and modelling techniques

机译：通过测量和建模技术比较四个城市空间的热舒适条件

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Microclimatic conditions inside urban areas depend on the result of the interaction of the regional climate with the whole urban area and on the local characteristics of the urban development. Inadequate human thermal comfort conditions can affect quality of life and the use of public open spaces. In this study, outdoor thermal conditions are examined through three field campaigns in Bilbao in the north of the Iberian Peninsula. Climate variables are measured in four different areas of the city in different regional climate conditions. Thermal comfort evaluation is undertaken by means of the thermal index PET (Physiological Equivalent Temperature). Measurements are compared with estimated values derived from ENVI-met model. Results show that the differences between modelled and measured climatic variables can imply a relevant deviation in PET (i.e. difference between modelled and measured values). Regression and correlation analyses account for the importance of the deviation of each climatic variable in the deviation of PET values. Deviation of PET appears to be highly conditioned by the deviation of mean radiant temperature values especially during clear sky days. Under overcast conditions deviation of wind speed also becomes a relevant aspect. Consequently, reliable estimation of these variables is required if modelling techniques are to be used in the assessment of thermal comfort in outdoor urban spaces. (C) 2015 Elsevier Ltd. All rights reserved.
机译：城市区域内的小气候条件取决于区域气候与整个城市区域相互作用的结果以及城市发展的局部特征。人体的热舒适条件不足会影响生活质量和公共场所的使用。在这项研究中，通过在伊比利亚半岛北部的毕尔巴鄂进行了三场野战，研究了室外的热条件。在不同区域气候条件下，在城市的四个不同区域中对气候变量进行了测量。热舒适性评估是通过热指数PET（生理等效温度）进行的。将测量结果与从ENVI-met模型得出的估计值进行比较。结果表明，模拟气候变量与实测气候变量之间的差异可能暗示PET中存在相关偏差（即模拟值与实测值之间的差异）。回归和相关分析说明了每个气候变量的偏差在PET值偏差中的重要性。 PET的偏差似乎受到平均辐射温度值偏差的高度限制，特别是在晴天。在阴天条件下，风速偏差也成为一个相关方面。因此，如果要在室外城市空间的热舒适性评估中使用建模技术，则需要对这些变量进行可靠的估计。 （C）2015 Elsevier Ltd.保留所有权利。

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