结合CFD的EnergyPlus大空间温度分层能耗模拟

Energy Consumption Simulation on Large Space with Thermal Stratification by Softwares of EnergyPlus and CFD

本文探讨了与CFD模拟相结合的EnergyPlus大空间温度分层能耗模拟方法。首先使用Fluent软件对大空间温度分层现象进行了模拟,而后将获得的大空间温度分层数据输入到EnergyPlus Room Air模块,从而精确模拟大空间能耗。结合夏热冬冷地区火车站候车大厅实例,将采用温度分层策略的能耗与普通分层空调系统的能耗进行对比,验证了该模拟方法的可行性,同时证明了大空间采用温度分层策略的节能效果显著。

In this paper,the method of EnergyPlus combined with CFD was presented for simulating the energy consumption of large space with thermal stratification. Firstly, the software of Fluent was used to simulate the thermal stratification in large space, and then the results were put into the Room Air module of EnergyPlus, which would accurately consider the thermal stratification while simulating the energy consumption. To verify the feasibility of this method,a case study on a railway waiting room in hot summer and cold winter region was given out. Furthermore, the energy consumption based on the thermal stratification strategy was compared with that of the ordinary air-conditioning system, and the energy-saving effect of thermal stratification strategy was validated.