【摘要】 因大空间建筑室内存在热分层现象,能耗模拟会产生一定的误差。为了提高能耗模拟的准确性,尝试联合应用EnergyPlus与CFD,采用耦合策略对某一大空间建筑进行能耗模拟。EnergyPlus计算出该建筑墙体的内表面温度作为CFD模拟的温度边界条件。CFD计算出墙体的内表面对流换热系数及室内温度场。将对流换热系数与室内温度场作为EnergyPlus的补充条件进行能耗计算,得到基于耦合策略的能耗模拟结果。通过与实测能耗数据对比,发现基于耦合策略得到的结果更为准确,验证了该方法对大空间建筑进行能耗模拟的有效性和可靠性,对绿色建筑能耗分析计算具有一定的借鉴意义。更多还原

【Abstract】 Due to the thermal stratification in large space buildings,the energy consumption simulation can generate considerable errors. In order to increase the accuracy of energy consumption simulation,EnergyPlus and CFD are used together to compute the energy consumption of a large space building by adopting coupling strategy. EnergyPlus can provide interior surface temperatures of building envelopes to CFD as boundary conditions. CFD can determine the internal surface convective heat transfer coefficient and indoor temperature field. The internal surface convective heat transfer coefficient and indoor temperature field are used as the additional conditions of EnergyPlus to calculate the energy consumption again,which can obtain the energy consumption results of the coupling strategy. By comparing with the actual energy data,the energy consumption results obtained by coupling strategy are more accurate,which verifies the effectiveness and reliability of the coupling strategy for energy consumption simulation of large space buildings. This has certain reference significance for the analysis of green building energy consumption.更多还原