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Building Simulation 2021年第4期14卷 1189-1200页

作者： Timur Dogan Patrick Kastner Cornell University Department of ArchitectureEnvironmental Systems LaboratoryEast Sibley HallIthacaNY14850USA

Building energy modeling software generally comes with capable airflow network solvers for natural ventilation evaluation in multi-zone building energy models. These approaches rely on arrays of pressure coefficients representing different wind directions derived from simple box-shaped buildings without contextual obstructions. For urban or obstructed sites, or more complex building shapes, however, further evaluation is needed to avoid geometric oversimplification. In this study, we present an automated and easy-to-use simulation workflow for OpenFOAM-based exterior airflow simulations to generate arrays of pressure coefficients for arbitrary building shapes and contextual situations. The workflow is compared to other methods commonly used to obtain pressure coefficients for natural ventilation analysis. Finally, we assess for which climate zones and building types modelers should rely on more accurate CFD-based pressure coefficients and where it may be justifiable to rely on easier and readily available analytical approaches to determine pressure coefficients. Results suggest that existing workflows lead to significant error in predicted comfort hours for climates in the Global South and modelers should consider CFD-based facade pressure coeficients.

关键词： natural ventilation airflow networks energyplus pressure coefficients computational fluid dynamics

AutoBPS-BIM:A toolkit to transfer BIM to BEM for load calculation and chiller design optimization

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Building Simulation 2023年第7期16卷 1287-1298页

作者： Zhihua Chen Zhang Deng Adrian Chong Yixing Chen College of Civil Engineering Hunan UniversityChangshaHunan 410082China Key Laboratory of Building Safety and Energy Efficiency(Hunan University) Ministry of EducationChina Department of Building National University of Singapore4 Architecture Drive117566Singapore

This study developed a rapid building modeling tool,AutoBPS-BIM,to transfer the building information model(BIM)to the building energy model(BEM)for load calculation and chiller design *** eight-storey office building in Beijing,33.2 m high,67.2 m long and 50.4 m wide,was selected as a case study ***,a module was developed to transfer BIM in IFC format into BEM in *** air volume systems were selected for the air system,while water-cooled chillers and boilers were used for the central *** energyplus model calculated the heating and cooling loads for each space as well as the energy consumption of the central ***,a chiller optimization module was developed to select the optimal chiller design for minimizing energy consumption while maintaining thermal *** available chillers were included,with capacities ranging from 471 kW to 1329 *** results showed that the cooling loads of the spaces ranged from 33 to 100 W/m^(2) with a median of 45 W/m^(2),and the heating load ranged from 37 to 70 W/m^(2) with a median of 52 W/m^(2).The central plant’s total cooling load under variable air volume systems was 1400 *** with the static load calculation method,the dynamic method reduced 33%of the chiller design *** two chillers were used,different chiller combinations’annual cooling energy consumption ranged from 10.41 to 11.88,averaging 11.12 kWh/m^(2).The lowest energy consumption was 10.41 kWh/m^(2) when two chillers with 538 kW and 1076 kW each were *** the proper chiller number with different capacities was critical to achieving lower energy consumption,which achieved 12.6%cooling system energy consumption reduction for the case study *** study demonstrated that AutoBPS-BIM has a large potential in modeling BEM and optimizing chiller design.

关键词： BIM building energy model energyplus chiller design optimization AutoBPS-BIM

Exploring the impact of evaluation methods on Global South building design—A case study in Brazil

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Building Simulation 2024年第10期17卷 1871-1891页

作者： Vítor Freitas Mendes Alexandre Santana Cruz Adriano Pinto Gomes Júlia Castro Mendes Programa de Pós-Graduação em Engenharia Civil(PROPEC) Universidade Federal de Ouro Preto(UFOP).Ouro PretoMinas GeraisCEP 35400-000Brazil Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais(IFMG)–Campus Santa Luzia.Santa LuziaMinas GeraisCEP 33115-390Brazil Programa de Pós-graduação em Arquitetura(PROARQ) Universidade Federal do Rio de Janeiro(UFRJ).Rio de JaneiroRio de JaneiroCEP 21941-972Brazil Área de Desenho e Projeto Instituto Federal de Minas Gerais(IFMG)–campus Ouro Preto.Ouro PretoMinas GeraisCEP 35400-000Brazil Programa de Pós-Graduação em Engenharia Civil(PEC) Universidade Federal de Juiz de Fora(UFJF).Juiz de ForaMinas GeraisCEP 36036-900Brazil

Energy simulation is a valuable tool for evaluating and improving the thermal performance and energy efficiency of buildings during the design *** evaluation methods are thermal load(TL),degree-hour(DH),and design days(DD).The choice of method and its settings may vary depending on regional factors and researchers’preferences,leading to diverse and often incompatible metrics and ***,this study aims to investigate the influence of these evaluation methods on the assessment of buildings’performance and,consequently,on design *** this purpose,this study compared the results of the 3 evaluation methods and different settings for 3 different wall systems,4 ranges of comfort temperature,and 2 residential models located in the 8 Brazilian bioclimatic *** result,the best and worst wall systems varied depending on the evaluation method and the threshold/setpoint temperature range *** regions showed greater variability in the *** noticed that it is not possible to compare and interpret results from different evaluation methods,and that the variation of only 1℃in the setpoint temperatures can lead to entirely different practices being considered the best for a given building *** conclusion,the most suitable evaluation method is the one that best portrays the operation and dynamic reality of the building to be designed,and building regulations and standards can occasionally lead to unrealistic assessments.

关键词： energy efficiency energy simulation energyplus thermal load degree-hour design days

Application and evaluation of a pattern-based building energy model calibration method using public building datasets

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Building Simulation 2022年第8期15卷 1385-1400页

作者： Kaiyu Sun Tianzhen Hong Janghyun Kim Barry Hooper Lawrence Berkeley National Laboratory BerkeleyCAUSA National Renewable Energy Laboratory GoldenCOUSA San Francisco Deportment of the Environment San FranciscoCAUSA

Building performance simulation has been adopted to support decision making in the building life *** essential issue is to ensure a building energy simulation model can capture the reality and complexity of buildings and their systems in both the static characteristics and dynamic *** energy model calibration is a technique that takes various types of measured performance data(e.g.,energy use)and tunes key model parameters to match the simulated results with the actual *** study performed an application and evaluation of an automated pattern-based calibration method on commercial building models that were generated based on characteristics of real buildings.A public building dataset that includes high-level building attributes(e.g.,building type,vintage,total floor area,number of stories,zip code)of 111 buildings in San Francisco,California,USA,was used to generate building models in *** level energy use calibrations were then conducted by comparing building model results against the actual buildings’monthly electricity and natural gas *** results showed 57 out of 111 buildings were successfully calibrated against actual buildings,while the remaining buildings showed opportunities for future calibration *** to the pattern-based model calibration method are identified to expand its use for:(1)central heating,ventilation and air conditioning(HVAC)systems with chillers,(2)space heating and hot water heating with electricity sources,(3)mixed-use building types,and(4)partially occupied buildings.

关键词： model calibration building energy modeling energyplus building performance simulation monthly energy use

Energy Plus用户图形界面软件Design Builder及其应用

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西安航空技术高等专科学校学报 2007年第5期25卷 34-37页

作者：刘鑫张鸿雁西安建筑科技大学环境与市政工程学院陕西西安710055

介绍了建筑全能耗分析软件energyplus的新一代界面软件DesignBuilder的特点和新功能及其与energyplus的关系,分析了该软件在建筑建模和模拟以及后处理上的优点并将其应用于被动式太阳能建筑的模拟,根据模拟结果对被动式太阳能建筑模型... 详细信息

介绍了建筑全能耗分析软件energyplus的新一代界面软件DesignBuilder的特点和新功能及其与energyplus的关系,分析了该软件在建筑建模和模拟以及后处理上的优点并将其应用于被动式太阳能建筑的模拟,根据模拟结果对被动式太阳能建筑模型在改善冬季室内热舒适性及节能效果进行了分析和评价。

关键词： DesignBuilder energyplus 被动式太阳能建筑实效温度

DESIGN OF A LOW-ENERGY ENVELOPE SYSTEM FOR AN APARTMENT BUILDING THROUGH AN INTEGRATED DESIGN PROCESS:A CASE STUDY

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Journal of Green Building 2011年第3期6卷 106-132页

作者： K.L.R.Ng Z.Liao M.Gorgolewski L.Gurunlian Department of Architectural Science Ryerson University Building Engineering Team Trow Associates Inc.

The potential to conserve energy in an apartment building in Toronto,Ontario,Canada through the implementation of an advanced envelope system was explored in this *** paper illustrates the possibility in reducing energy demand through an integrated design process(IDP),where research outcomes were incorporated into the architectural *** the floor plan and schematics provided by the designer,a building energy model was established in an advanced simulation program to evaluate the performances of nine low-energy envelope design strategies in reducing the heating and cooling energy *** this study,it can be concluded that performing detailed energy simulations early in the design process to identify which low-energy envelope strategies can be omitted or substituted in the final envelope design is crucial in identifying the most effective strategies for improving energy *** study also demonstrates the potential of collaboration between academia and industry in generating high performance buildings.

关键词： low energy envelope system cold climatic zone envelope design thermal mass wall insulation energy simulation apartment building energyplus

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某大型公共建筑全能耗模拟和节能潜力分析

建筑热能通风空调 2008年第6期27卷 84-89页

作者：左明明潘毅群同济大学机械工程学院同济大学中德工程学院

本文首先介绍全建筑能耗模拟软件energyplus的性能和特点,重点说明它在模拟大型公共建筑时所具有的优势。通过比较energyplus与其他能耗模拟软件的特点,讨论了如何使用energyplus最大限度地反映建筑各系统如空调系统、照明系统、生活热... 详细信息

本文首先介绍全建筑能耗模拟软件energyplus的性能和特点,重点说明它在模拟大型公共建筑时所具有的优势。通过比较energyplus与其他能耗模拟软件的特点,讨论了如何使用energyplus最大限度地反映建筑各系统如空调系统、照明系统、生活热水系统等的复杂构成及它们之间的相互耦合关系。然后采用energyplus对拟申请美国LEED绿色建筑认证的某大型公共建筑进行能耗模拟并计算全年能耗费用。按照LEED标准的要求建立ASHRAE基准模型,通过比较ASHRAE基准模型和设计模型的全年能耗,讨论有效降低建筑全年能耗的途径并建立节能模型。在节能模型中,透明围护结构的遮阳性能得以加强,建筑系统中部分设备的效率得以提高,并引入日光照明、人员传感器等技术。结果表明,本文提出的节能模型与ASHRAE基准模型相比,全年耗电量减少了4.7%,全年耗气量增加了6.9%,全年电费减少了14%,全年总能耗费用减少了7.75%。

关键词：全建筑能耗模拟大型公共建筑 ASHRAE基准模型 energyplus

Heating energy performance and part load ratio characteristics of boiler staging in an office building

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Frontiers in Energy 2019年第2期13卷 339-353页

作者： Da Young LEE Byeong Mo SEO Yeo Beom YOON Sung Hyup HONG Jong Min CHOI Kwang Ho LEE Graduate School Hanbat National UniversityDaejeon 305-719South Korea College of Design North Carolina State University RaleighNC 27695-7701USA Department of Mechanical Engineering Hanbat National UniversityDaejeon 305-719South Korea Department of Architectural Engineering Hanbat National UniversityDaejeon 305-719South Korea

Commercial buildings account for significant portions of the total building energy in South Korea and thus a variety of research on the boiler operation related to heating energy in office buildings has been carried out thus far. However, most of the researches have been conducted on the boiler itself, i.e., the part load ratio characteristics and the corresponding gas energy consumption patterns are not analyzed in the existing studies. In this study, the part load ratio and the operating characteristics of gas boiler have been analyzed within an office building equipped with the conventional variable air volume system. In addition, the gas consumption among different boiler staging schemes has been comparatively analyzed. As a result, significant portions of total operating hours, heating load and energy consumption has been found to be in a part load ratio range of 0 through 40% and thus energy consumption is significantly affected by boiler efficiency at low part load conditions. This suggests that boiler operation at the part load is an important factor in commercial buildings. In addition, utilizing sequential boiler staging scheme can save a gas usage of about 7%. For annual heating energy saving, applying the sequential control boiler with a 3:7 proportion staging is considered to be the optimal control algorithm for maximum efficiency of boilers.

关键词： energyplus boiler part load ratio gas con-sumption office building boiler staging

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双层相变材料砌块的全年应用效果研究

太阳能学报 2019年第6期40卷 1519-1526页

作者：张维维程建杰张源何嘉鹏南京工业大学城市建设学院南京210009 江苏大学能源与动力工程学院镇江212013

为解决单一相变材料无法在全年发生相变产生节能效益的问题,提出在空心混凝土砌块中填充2种相变温度不同的相变材料构成双层相变材料混凝土砌块。以夏热冬冷地区南京某朝南房间为研究对象,通过energyplus能耗软件的模拟分析功能对2种相... 详细信息

为解决单一相变材料无法在全年发生相变产生节能效益的问题,提出在空心混凝土砌块中填充2种相变温度不同的相变材料构成双层相变材料混凝土砌块。以夏热冬冷地区南京某朝南房间为研究对象,通过energyplus能耗软件的模拟分析功能对2种相变材料的相变温度及在砌块中的位置进行优化。研究得到,在南向外墙中应用这种双层相变砌块,相比于单层相变砌块和空心砌块可显著减小空调期制冷耗电量和采暖期制热耗电量,且能明显减小过渡季节的室内日平均温度波幅,提高热舒适度。

关键词：双层相变材料空心混凝土砌块 energyplus 节能热舒适

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冷屋顶对铁路客运站用能特性的影响

中南大学学报（自然科学版） 2013年第11期44卷 4726-4735页

作者：李立清程佳马卫武姚小龙中南大学能源科学与工程学院湖南长沙410083

在定性分析冷屋顶对建筑物性能影响的基础上,以长沙某铁路客运站为原型,利用能耗模拟软件energyplus建立模型,并运用实测数据对模型进行验证。以此模型对比分析冷屋顶屋面反射系数和天窗遮阳反射系数对客运站空调机组装机容量、空调和... 详细信息

在定性分析冷屋顶对建筑物性能影响的基础上,以长沙某铁路客运站为原型,利用能耗模拟软件energyplus建立模型,并运用实测数据对模型进行验证。以此模型对比分析冷屋顶屋面反射系数和天窗遮阳反射系数对客运站空调机组装机容量、空调和照明能耗、室内热舒适性的影响,并探讨冷屋顶技术在不同建筑围护结构、不同气候条件下应用的差异性。研究结果表明:对于我国大部分地区,冷屋顶技术能有效减少空调制冷机组的装机容量和制冷能耗,改善夏季室内热舒适性,但对冬季供暖能耗、照明能耗和冬季室内舒适性的影响却因不同类型的冷屋顶而有所区别,因此冷屋顶技术需与当地客观自然条件相结合才能有效发挥效果。

关键词：冷屋顶反射系数建筑能耗 energyplus 铁路客运站