热环境模拟下大空间建筑室内能耗优化方法

Optimization Method of Indoor Energy Consumption of Large Space Buildings Based on Thermal Environment Simulation

以节约建筑室内能耗、提升人体舒适度为目的,研究大空间建筑室内热环境模拟与能耗优化方法。方法以某城市大型商场为研究对象,依据该建筑室外参数、围护结构热工性能、室内热干扰与空调采暖情况建立其连续性方程、能量方程等数学模型,并利用数学模型获取该建筑室内热环境参数。利用计算流体力学软件与室内热环境参数模拟大空间建筑室内热环境,依据模拟结果,夏季通过喷口双侧送风和底板送风相结合的送风方式,冬季通过适当关闭送风喷口、增加送风量等方式,优化该建筑能耗。实验结果表明:优化后建筑室内空调系统能耗降低明显;不同季节人体热反应量化数值下降幅度较大,有效提升了室内人员的舒适度。

The indoor thermal environment simulation and energy consumption optimization methods of large space buildings were studied in order to save indoor energy consumption and improve human comfort. Firstly, taking a large shopping mall in a city as the research object, the continuity equation and energy equation were founded. Through the outdoor parameters, thermal performance of enclosure structure, indoor thermal interference and air conditioning and heating, the mathematical models such as continuity equation and energy equation were established, and the indoor thermal environment parameters were obtained by using the mathematica model. Secondly, the hydrodynamics software was applied, and the indoor thermal environment parameters were calculated to simulate the indoor thermal environment of large space buildings. Eventually, according to the simulation results, the best air supply mode in summer and winter was obtained, thus optimizing the building energy consumption. The air supply mode in summer was the combination of air supply on both sides of the nozzle and air supply on the bottom plate. In winter, the air supply mode was to properly close the air supply nozzle and increase the air supply volume. The experimental results show that the energy consumption of the optimized indoor air conditioning system is significantly reduced while ensuring the comfort of indoor personnel.