The glass curtain wall is widely favored by the owners for its good appearance modeling effect. In using process,however,excessive energy consumption,low level indoor comfort and other problems of glass curtain wall a...The glass curtain wall is widely favored by the owners for its good appearance modeling effect. In using process,however,excessive energy consumption,low level indoor comfort and other problems of glass curtain wall are often exposed. Aiming at office buildings in hot Summer and cold Winter zone,taking the optimization of thermal comfort of double glass curtain wall in the summer and the reduction of building energy consumption throughout the year as the breakthrough point,using the method of energy simulation analysis,through changing the size of internal shading component in the simulated room,this paper analyzes and summarizes the variation law of its energy consumption value,to explore the relatively reasonable design plan of shading systems of the building with glass curtain wall.展开更多
Boiling heat transfer and the controllability of the thermal load of the cylinder head were studied.The thermodynamic phase change characteristics of the cylinder head coolant were considered and the mass,momentumand ...Boiling heat transfer and the controllability of the thermal load of the cylinder head were studied.The thermodynamic phase change characteristics of the cylinder head coolant were considered and the mass,momentumand energy transfers between two phases were calculated with the interface transfer submodels by using the computational fluid dynamics software CFX. Results showed that compared with the single-phase flow without considering the boiling heat transfer,the sub-cooled boiling heat transfer of the cylinder head was greatly increased. According to the results of the numerical simulation,an optimized structure of the water jacket was proposed. Finally,temperature and velocity of coolant,diameter of flow passage and mean bubble diameter that influences sub-cooled boiling were studied using the orthogonal experiment method.展开更多
文摘The glass curtain wall is widely favored by the owners for its good appearance modeling effect. In using process,however,excessive energy consumption,low level indoor comfort and other problems of glass curtain wall are often exposed. Aiming at office buildings in hot Summer and cold Winter zone,taking the optimization of thermal comfort of double glass curtain wall in the summer and the reduction of building energy consumption throughout the year as the breakthrough point,using the method of energy simulation analysis,through changing the size of internal shading component in the simulated room,this paper analyzes and summarizes the variation law of its energy consumption value,to explore the relatively reasonable design plan of shading systems of the building with glass curtain wall.
基金Supported by the National Key Basic Research Program of China(1030021210710)
文摘Boiling heat transfer and the controllability of the thermal load of the cylinder head were studied.The thermodynamic phase change characteristics of the cylinder head coolant were considered and the mass,momentumand energy transfers between two phases were calculated with the interface transfer submodels by using the computational fluid dynamics software CFX. Results showed that compared with the single-phase flow without considering the boiling heat transfer,the sub-cooled boiling heat transfer of the cylinder head was greatly increased. According to the results of the numerical simulation,an optimized structure of the water jacket was proposed. Finally,temperature and velocity of coolant,diameter of flow passage and mean bubble diameter that influences sub-cooled boiling were studied using the orthogonal experiment method.
