北京某建筑1层大厅供暖空调系统节能改造优化设计
摘要：
为解决严寒、寒冷地区高大空间供暖气流组织设计不合理、热舒适差的问题,通过对北京某建筑1层大厅温度、风量、需热量等进行实测分析,以及对类似典型项目大空间进行调研研究,得出了在原供暖空调系统方案的基础上,增设地板辐射供暖系统的改造方案。并借助CFD模拟软件,对改造前后的室内热环境进行了气流组织对比分析。结果表明,采用地板辐射供暖系统改造方案之后,可以明显改善大厅冬季的热舒适度。研究结果可为严寒、寒冷地区高大空间冬季供暖空调系统设计及优化改造提供参考。
Abstract：
To address the issues of unreasonable air distribution design and poor thermal comfort in heating systems for large spaces in severe cold and cold zones, this paper conducts on-site measurements and analyses of temperature, air volume, and heat demand in the lobby of a building in Beijing, and also investigates similar typical large-space projects. Based on the original heating and air conditioning system scheme, a renovation scheme that adds a floor radiant heating system is proposed. By using CFD simulation software, a comparative analysis of air distribution in the indoor thermal environment before and after the renovation is carried out. The results indicate that after adopting the floor radiant heating system renovation scheme, the thermal comfort in the lobby during winter can be significantly improved. The research findings can provide references for the design and optimization retrofit of heating and air conditioning systems for large spaces in severe cold and cold zones during winter.
Keywords:heating; high space; airflow organization design; floor radiant heating; CFD simulation; indoor thermal environment