Study on Evaporative Cooling Characteristics of Water-bearing Fiber Roof in Multi-climate Regions
The evaporative cooling characteris-tics of water-bearing fiber roofs in various climatic re-gions 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 cool-ing 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 de-crease,Beijing is in the middle,and Chongqing has the least significant decrease.The hourly cooling load re-duction 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 water-bearing fiber roof,and carbon dioxide emission reduc-tion rate of water-bearing fiber roof building air-condi-tioning system in Urumqi are the highest,Beijing is the middle and Chongqing is the lowest.
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