摘要
Aiming at the serious heat and cold loss of the building glass curtain wall in the field of amusement and tourism,and the need to meet the landscape requirements of the building facade,this paper put forward the idea of integrating the shading and consumption reduction of glass curtain wall with the landscape requirements,that is,the water curtain was set outside the glass curtain wall to form a landscape energy-saving integrated water curtain wall system,while meeting the needs of landscape and shading.By establishing the numerical calculation model of the system,the corresponding relationship between the thickness of water film and the weakening of solar radiation intensity was revealed,as well as the influence of wind speed and wind direction on the nozzle exit angle and velocity selection;and the synergistic law of air flow rate and air temperature drop amplitude.The results showed that the water film thickness at 3-4 cm can reduce the solar radiation by 65%-80%.The temperature of the air layer between the water film and the curtain wall decreased as the air flow rate decreased,when the thickness of water film was 2 cm and the air velocity was 0.5-1.5 m/s,the air temperature dropped to 2.47-3.6°C.Finally,through the analysis of the actual project-ICE World&WATER Park,the system can reduce 66.8%of solar radiation,and reduce the air layer temperature by 3.9°C.
Aiming at the serious heat and cold loss of the building glass curtain wall in the field of amusement and tourism, and the need to meet the landscape requirements of the building facade, this paper put forward the idea of integrating the shading and consumption reduction of glass curtain wall with the landscape requirements, that is, the water curtain was set outside the glass curtain wall to form a landscape energy-saving integrated water curtain wall system, while meeting the needs of landscape and shading. By establishing the numerical calculation model of the system, the corresponding relationship between the thickness of water film and the weakening of solar radiation intensity was revealed, as well as the influence of wind speed and wind direction on the nozzle exit angle and velocity selection; and the synergistic law of air flow rate and air temperature drop amplitude. The results showed that the water film thickness at 3-4 cm can reduce the solar radiation by 65%-80%. The temperature of the air layer between the water film and the curtain wall decreased as the air flow rate decreased, when the thickness of water film was 2 cm and the air velocity was 0.5-1.5 m/s, the air temperature dropped to 2.47-3.6°C. Finally, through the analysis of the actual project—ICE World & WATER Park, the system can reduce 66.8% of solar radiation, and reduce the air layer temperature by 3.9°C.
基金
project Xiangjiang Happy City — Ice World & Water Park, which is constructed by Ltd of China Construction Fifth Engineering
