基于ASHARE-140标准的建筑热过程模拟结果对比校验——以DeST为例

Comparison and Verification of Simulation Results of Building Thermal Process Based on ASHARE-140 Standard——Taking DeST as an Example

基于美国暖通工程师协会ASHRAE-140国际建筑能耗模拟软件对比标准,采用对比测试法,对建筑能耗模拟软件计算内核的准确性进行全面检验,并对计算结果的稳定性进行评估,是目前国际上主流的建筑能耗模拟软件均参与的验证过程。本文重点针对ASHRAE-140标准2014版本展开分析。首先本研究细致对比了ASHRAE-140标准2014版本和2007版本在算例设定上的差异,并讨论了发生算例变动的主要原因。进而,以清华大学自主开发的DeST建筑能耗模拟分析软件为研究对象,采用ASHRAE-140标准2014版本,对DeST进行检验、勘误和修正。在对比过程中,本文重点分析了太阳辐射二次透射损失、遮阳计算、表面换热系数输入方法对模拟软件计算结果的影响程度,并通过案例设计着重分析对计算结果影响较大的参数设置以及造成模拟差异的算法原因。从计算结果来看,DeST软件与其他模拟软件计算结果的差异基本控制在10%内。本文的研究工作展示了ASHRAE-140国际建筑能耗模拟软件对比标准在检验内核软件的开发质量以及可靠性研究方面的有效作用。通过本研究的验证过程,可以对DeST软件在计算建筑性能方面的有效性和全面性有一个合理的判断。

Mainstream international building energy simulation tools are involved in the verification process to comprehensively test the accuracy of core calculation of building energy consumption simulation software and to evaluate the stability of calculation results. The verification process is based on ASHRAE-140 International Comparison Standard of Building Energy Simulation Software, using the method of inter-procedure comparison. This article focuses on analyzing the ASHRAE standard 140-2014 version. The differences in setting examples is compared carefully in the study and the main reasons for changes in the examples between ASHRAE standard 140-2014 and 140-2007 are discussed. Furthermore, by taking DeST（a building energy simulation platform independently developed by Tsinghua University） as the research object, ASHRAE standard 140-2014 is adopted to test and correct DeST. In contrast, this paper analyzes the influence of solar radiation,window shade and surface convection coefficient on calculation results of the simulation software, and focuses on analyzing parameters that affect the calculation results greatly as well as causes of the simulation differences through case design. Deviation of the calculated results deviation of most cases between DeST software and other simulation software is within 20%. Research findings in this paper show that ASHRAE Standar-140 is effective in testing the development quality and reliability of kernel software. Through the verification process of this study, a reasonable judgment on the validity and comprehensiveness of DeST software in calculating building performance can be obtained.