Research On Indoor Airflow Organization Simulation And Anti-condensation In Large Swimming Pool

The high-temperature and high-humidity indoor airflow organization environment of the large-scale closed swimming pool makes the HVAC design need to meet higher requirements.It mainly includes the following two aspects: in the same large space,different comfort requirements for the audience and pool area personnel should be met;reasonable control of the relative humidity of the air in the swimming pool,to ensure that no condensation on the surface of the maintenance structure and extend the service life of the stadium.This thesis takes a practical participation in the game swimming pool HVAC design project as the background,and proposes feasible return air plans for the venue under summer and winter conditions,and carries out simulation analysis and comparison.The thesis first analyzes the main sources of swimming pool load,compares the theoretical background and application range of different calculation formulas,and more accurately estimates the actual load in the stadium.Comparing the common airflow organization of swimming pools,combined with the architectural features,the swimming pool is designed to use the airflow organization of the side air supply and the vertical air curtain in the HVAC design.The airflow organization uses vertical air curtains.Separate the air from the auditorium and the pool area,and meet the comfort requirements of the personnel in different areas through the district air supply.At the same time,the air inlet,air outlet and vent design in the venue are completed.Based on the results of load calculation and air conditioning,two feasible HVAC design schemes under summer conditions are proposed.The simulation software is used to analyze the distribution of temperature and humidity fields and velocity fields of typical sections in swimming pools under different schemes.The air temperature of the auditorium is 18°C,the relative humidity is 63%,the air supply in the pool area is 23°C,and the relative humidity is 65%,which can meet the design specifications of the swimming pool.At the same time,the surface temperature of the maintenance structure of the swimming pool is checked.There is no condensation on the surface of the structure.In winter conditions,the vertical air curtain and the roof exhaust vent are closed to reduce the diffusion of hot air into the large space and reduce the energy consumption of the swimming pool.The comparison of the two HVAC design schemes in winter conditions proves that the air temperature of the auditorium is 31°C,the relative humidity is 40%,the air supply temperature in the pool area is 35°C,and the relative humidity is 45%,which meets the thermal needs of the personnel and does not appear any condensation phenomenon at the same time,which proves the feasibility of the program.After clarifying the standards and specifications of the swimming pool HVAC design,this thesis provides a theoretical guide for the determination of the swimming pool return air plan by visualizing the indoor airflow organization of the swimming pool.