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Announcement

Join us for UT Austin Energy Week final project presentations on December 11th at 10-11:45 am. Discuss airflow simulation, review course topics, and more! Send your presentations by 9:45 am. Lecture objectives and presentation guidelines provided. Learn about energy modeling tools and software for advanced simulations. Explore different programs like eQUEST, EnergyPlus, TRNSYS, and more. Enhance your understanding of energy conservation in buildings through numerical methods and simulations. Review course objectives and sign up for upcoming courses.

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Announcement

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  1. Announcement UT Austin Energy Week

  2. Final project presentations ~ 2 hours on December 11th 10-11:45 am Same Classroom Send me the presentations till 9:45 am

  3. AnnouncementJob Opportunity Austin Energy Green Building (AEGB) https://www.austincityjobs.org/postings/71661 You will receive periodic emails during the next semester

  4. Lecture Objectives: • Discuss final project presentation • Discuss airflow simulation and various simulation tools • Review the course topics • Do the Course and Instructor Evaluation

  5. Final presentation slides format • Introduction of the problem: 1-2 slides • Methodology (model description): 1-2 slides • Results: 3-5 Slides • Summary (findings): 1 Slide Presentation Time: 5 minutes (sharply) • 2 minutes for questions Send me the slides before the class !

  6. Advance Energy Modeling with coupled energy and airflow Example: Night Cooling/Hybrid Ventilation The IONICA Office Building, Cambridge, UK

  7. Night Cooling/Hybrid Ventilation: Requires combined Energy and airflow modeling

  8. Night Cooling/Hybrid Ventilation:The IONICA Office Building, Cambridge, UK

  9. Available software Which software to use: - Depends on project requirements - If you have a choice: the one which passed BETEST Be ready to conduct additional analysis based on your modeling skills http://www.eere.energy.gov/buildings/tools_directory/subjects_sub.cfm

  10. ASCI file ASCI file Structure of All ES programs Graphical User Interface (GUI) Solver Interface for input data Interface for result presentation Preprocessor Preprocessor Engine

  11. ES programs • Large variety • http://www.buildingenergysoftwaretools.com/ • DOE2 • eQUEST (DOE2) • BLAST • ESPr • TRNSYS • EnergyPlus (DOE2 & BLAST)

  12. eQUEST (DOE2)US Department of Energy & California utility customers • eQUEST - interface for the DOE-2 solver • DOE-2 - one of the most widely used ES program - recognized as the industry standard • eQUEST very user friendly interface • Good for life-cycle cost and parametric analyses • Not very large capabilities for modeling of different HVAC systems • Many simplified models • Certain limitations related to research application - no capabilities for detailed modeling DOE3 – very similar

  13. ESPrUniversity of Strathclyde - Glasgow, Scotland, UK • Detailed models – Research program • Use finite difference method for conduction • Simulate actual physical systems • Enable integrated performance assessments Includes daylight utilization, natural ventilation, airflow modeling CFD, various HVAC and control models • Detail model – require highly educated users • Primarily for use with UNIX operating systems

  14. http://www.esru.strath.ac.uk/Programs/ESP-r_overview.htm

  15. TRNSYSSolar Energy Lab - University of Wisconsin • Modular system approach • One of the most flexible tools available • A library of components • Various building models including HVAC • Specialized for renewable energy and emerging technologies • User must provide detailed information about the building and systems • Not free

  16. https://sel.me.wisc.edu/trnsys/

  17. EnergyPlusU S Department of Energy • Newest generation building energy simulation program ( BLAST + DOE-2) • Accurate and detailed • Complex modeling capabilities • Large variety of HVAC models • Some integration wit the airflow programs Zonal models and CFD • Detail model – require highly educated users • Very modest interface • Third party interface – very costly • New interface: Open Studio,

  18. https://energyplus.net/https://www.openstudio.net/https://beopt.nrel.gov/https://energyplus.net/https://www.openstudio.net/https://beopt.nrel.gov/

  19. Modelica (Modelica Buildings Library) http://simulationresearch.lbl.gov/modelica/

  20. THERMTwo-Dimensional Building Heat-Transfer Modelinghttps://windows.lbl.gov/software/therm/7/index_7_4_3.html Thermal bridge analysis Window performance analysis

  21. WUFIhttp://web.ornl.gov/sci/buildings/tools/wufi/ Heat and moisture analysis in building structural components

  22. Matlab vs. Scilab http://www.scilab.org/ Many other free versions: Python …

  23. Review Course Objectives 1. Identify basic building elements which affect building energy consumption and analyze the performance of these elements using energy conservation models. 2. Analyze the physics behind various numerical tools used for solving different heat transfer problems in building elements. 3. Use basic numerical methods for solving systems of linear and nonlinear equations. 4. Conduct building energy analysis using comprehensive computer simulation tools. 5. Evaluate the performance of building envelope and environmental systems considering energy consumption. 6. Perform parametric analysis to evaluate the effects of design choices and operational strategies of building systems on building energy use. 7. Use building simulations in life-cycle cost analyses for selection of energy-efficient building components.

  24. There is a Building Energy System course that I teach in Spring 2017 If you likes this course:

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