Large Space Building Air-conditioning Systems Numerical Simulation Of Airflow And Energy Conservation

Although in the past few decades,has had enough experience for the construction of a large space air conditioning system design,building structure,and new forms of building continues to produce,and at this stage,we face the large space building,the structure is more complex,larger size,more strange,rely on our past experience,it is difficult to meet the design needs,so we need to follow the footsteps of building development,from design to make a variety of design,through the computer to achieve what we can not predict.Because of the characteristics of the air flow in large space building,which has its own characteristics,we face the biggest problem is that it is difficult to accurately grasp the indoor air flow characteristics,which resulted in the designer in the design phase can not know the building indoor air temperature and speed.The air distribution characteristics of the building in the winter condition.We can analyze the characteristics of air distribution in winter,we can analyze the characteristics of air distribution in winter,the air distribution characteristics of buildings,the air conditioning system in large space building,so as to achieve the level of heating.In order to achieve the level of heating.In order to achieve the level of heating.In order to achieve the level of heating.In order to achieve the level of heating.The paper establishes the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the suitable mathematical and physical model.Firstly establish the mathematical and physical model.Establish the suitable mathematical and physical model.Firstly establish the mathematical and physical model.Establish the suitable mathematical and physical model.Firstly establish the mathematical and physical model.Establish the suitable mathematical and physical model.Firstly establish the mathematical and physical model.Establish the mathematical and physical model.Firstly establish the mathematical and physical model.Establish the mathematical and physical model.Firstly establish the mathematical and physical model.Establish the mathematical and physical model.Firstly establish the mathematical and physical model.Establish the mathematical and physical model.Firstly establish the mathematical and physical model.Establish the suitable mathematical and physical model.Firstly establish the mathematical and physical model.Two kinds of work in summer In the case of the most unfavorable situation,the FLUENT simulation results and the measured results are able to draw the same conclusion,thus the FLUENT simulation of the authenticity of the.In this paper,the CFD software of the high middle school gymnasium in Yingkou,the air condition of the spherical vent in winter and summer,the following results are obtained:the operating conditions of the summer:the wind speed is 7?7.5m/s,the air temperature is 17?19.The operating conditions of winter:the wind speed is 3.8-4.5m/s,the air temperature is 28.In addition,the use of spherical nozzles in the stadium in accordance with the scope of the application of spherical jet air velocity to meet the use requirements.Through the above research,the paper puts forward the measures to reduce the temperature gradient in winter:(1)the inclination of the air supply is more than 20,so that the hot air is blown down.Air velocity should be larger,air into a movable,easy to change garments according to the season when adjusted;(2)back to the arrangement of air indoors on both sides of the lower part;(3)reduce the supply air temperature difference,to increase the supply air flow rate;(4)building sealing performance as the better,as far as possible to reduce wind penetration into,in order to avoid waste of energy and affects the working region of the vertical temperature field uniformity.Can also take the following effective measures:(1)the vertical air flows change stratified air conditioning heat jet flow;(2)to set the level of air curtain,blocking the hot air rises;(3)the summer by stratified air conditioning,winter for radiation heating or top supplying heating warm air machine.Through the analysis of the energy consumption of air conditioning system,the main factors affecting the energy consumption of large space air conditioning system include load,air volume,air pressure,positive pressure control,air conditioning system,and so on.Finally in view of the large space air conditioning system put forward some energy saving measures:(1)to design a suitable space shape;(2)building walls,windows,roof,exterior protected construction structure;(3)indoor equipment cooling;(4)a suitable quantity of fresh air;(5)select the reasonable indoor temperature and humidity;(6)accurate load calculation results above the seven have a direct impact on the our hot and cold load,purify the load size,is the basis of air conditioning design only from these aspects taken into account at the same time to reach the ideal effect of energy saving.In addition,it also includes the selection of the air conditioning system,the air conditioning system,the reasonable air flow organization,the balance of the system design and the selection of the location of the air conditioning room.