摘要
采用建筑能耗模拟软件,研究含水纤维屋面在我国多种气候区域的蒸发降温性能,测算含水纤维屋面节能和减排效果。3种气候区域分别选取1座典型城市:夏热冬冷地区选取重庆,寒冷地区选取北京,严寒地区选取乌鲁木齐。乌鲁木齐含水纤维屋面蒸发传热量峰值最高,北京居中,重庆最低。与普通屋面建筑逐时冷负荷相比,3座典型城市的含水纤维屋面建筑逐时冷负荷、含水纤维屋面内外表面平均温度均有所降低,乌鲁木齐降幅最明显,北京居中,重庆降幅最不明显。含水纤维屋面建筑逐时冷负荷降幅、含水纤维屋面内外表面平均温度降幅均与含水纤维屋面蒸发传热量成正相关。乌鲁木齐含水纤维屋面建筑空调系统节电率、含水纤维屋面耗水量、含水纤维屋面建筑空调系统二氧化碳减排率最高,北京居中,重庆最低。
The evaporative cooling characteristics of water-bearing fiber roofs in various climatic regions of China were studied by using building energy consumption simulation software,and the energy-saving and emission reduction effects of water-bearing fiber roofs were calculated.A typical city was selected for each of the three climatic regions:Chongqing for hot summer and cold winter,Beijing for cold and Urumqi for severe cold.Urumqi has the highest peak heat transfer through evaporation of water-bearing fiber roofs,Beijing is in the middle,and Chongqing is the lowest.Compared with the hourly cooling load of ordinary roof buildings,the hourly cooling load of water-bearing fiber roof buildings and the average temperature of the inner and outer surfaces of water-bearing fiber roofs in the three typical cities are all reduced,and Urumqi has the most significant decrease,Beijing is in the middle,and Chongqing has the least significant decrease.The hourly cooling load reduction and the average temperature decrease on the inner and outer surfaces of the water-bearing fiber roof building are positively correlated with the heat transfer through evaporation of the water-bearing fiber roof.The power saving rate of water-bearing fiber roof building air-conditioning system,water consumption of waterbearing fiber roof,and carbon dioxide emission reduction rate of water-bearing fiber roof building air-conditioning system in Urumqi are the highest,Beijing is the middle and Chongqing is the lowest.
作者
张英杰
郝学军
ZHANG Yingjie;HAO Xuejun
出处
《煤气与热力》
2024年第7期10-15,42,共7页
Gas & Heat
基金
国家自然科学基金项目(51908020)。
关键词
蒸发冷却屋面
含水纤维屋面
蒸发降温
evaporative cooling roof
waterbearing fiber roof
evaporative cooling