准稳态建筑负荷计算软件IBE与动态模拟软件TRNSYS在寒冷地区应用的对比研究
Comparison between quasi-steady energy calculation software IBE and dynamic simulation software TRNSYS applied to cold zone
摘要：
介绍了ISO 13790中提出的准稳态建筑负荷计算方法，为了说明这种计算方法的准确性，针对寒冷地区单区和多区模型算例，对比分析了以这种计算方法为核心开发的软件IBE和动态负荷模拟软件TRNSYS的计算结果，并在单区模型中讨论了不同南窗面积、内热和通风作息对于计算结果的影响。结果显示，2种软件负荷计算结果的相对偏差绝大部分小于20%，但在南窗面积较小时年累积热负荷计算结果存在较大偏差，原因是此时IBE对动态系数估算过低。总的来说，ISO 13790中的准稳态建筑负荷计算方法适用于我国寒冷地区居住建筑的负荷计算，计算精度满足工程需求。
Abstract：
Presents the quasi-steady building energy calculation method proposed by ISO 13790.To verify its calculation accuracy, compares the calculation results of IBE based on the quasi-steady method with a validated dynamic simulation tool TRNSYS in both single-zone and multi-zone models in cold zone. Discusses the effects of different southern window areas and internal heat and ventilation schedules on the calculation results in the single-zone model. The results show that the relative deviations of the two software’s load calculation results are mostly less than 20%, but there is a large deviation in the annual cumulative heat load calculation results when the southern window area is small, due to the underestimated dynamic factor by IBE. In general, the quasi-steady method is suitable for the Chinese residential building energy calculation in cold zone, and the calculation precision meets engineering requirements.
Keywords:quasi-steady energy calculation, dynamic simulation, IBE, TRNSYS, single-zone, multi-zone, southern window area, internal heat and ventilation schedule