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            暖通空調雜志社>期刊目次>2021年>第1期

            復雜輻射場對城市微氣候的影響

            Impact of complex radiation field on urban microclimate

            劉大龍【1】【2】宋慶雨【1】劉加平【1】【2】
            【1】西安建筑科技大學 【2】西部綠色建筑國家重點實驗室

            摘要:

            太陽輻射是影響城市微氣候的關鍵要素。為分析輻射場對微氣候的影響機制,提出了城市復雜輻射場的概念并分析了其特性。采用模擬方法研究了下墊面、空間圍合方式與城市輻射場的關系及輻射場對微氣候的影響。研究發現:下墊面熱物性參數對城市輻射場影響顯著,建筑圍合空間下墊面對輻射場的影響比開敞空間更顯著;長波輻射發射率大的下墊面對微氣候影響更顯著;輻射場對氣溫的影響強于對相對濕度的影響。

            關鍵詞:復雜輻射場,城市微氣候,圍合空間,反射輻射,長波輻射

            Abstract:

            Solar radiation is a key factor affecting the urban microclimate. In order to analyse the influence mechanism of radiation field on the microclimate, proposes the concept of urban complex radiation field and analyses its characteristics. Adopts the simulation method to study the relationship between the underlying surface, the enclosed space and the urban radiation field, and the influence of radiation field on the microclimate. The research finds that the thermal parameters of the underlying surface of enclosed spaces have a more significant impact on the urban radiation field than those of open spaces. The underlying surface with a large long-wave radiation emissivity has a more significant impact on the microclimate. The influence of radiation field on air temperature is stronger than the influence on relative humidity.

            Keywords:complexradiationfield,urbanmicroclimate,enclosedspace,reflectedradiation,long-waveradiation

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