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OVERVIEW OF S IMULATION

OVERVIEW OF S IMULATION. PRESENTATION FOR ENGINEERS PRESENTER’S NAME NAME OF EVENT  LOCATION. I NTERNATIONAL B UILDING P ERFORMANCE S IMULATION A SSOCIATION - USA. LEARNING OBJECTIVES. Acquire a knowledge base for simulation.

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OVERVIEW OF S IMULATION

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  1. OVERVIEW OFSIMULATION PRESENTATION FOR ENGINEERS PRESENTER’S NAME NAME OF EVENT  LOCATION INTERNATIONAL BUILDING PERFORMANCE SIMULATION ASSOCIATION - USA IBPSA - USA OVERVIEW OF SIMULATION

  2. LEARNING OBJECTIVES • Acquire a knowledge base for simulation. • Understand how it adds value to design services. • Become aware of primary simulation tools. • Learn how to integrate applications within the design process. IBPSA - USA OVERVIEW OF SIMULATION

  3. DEFINITION AND PRINCIPLES Building Performance Simulation: a computer-based, mathematical model of some aspect of building performance based on fundamental physical principles and engineering models. IBPSA - USA OVERVIEW OF SIMULATION

  4. Information gathering Data collection Identification of modeling goals Model-building Run the simulation Debug Calibration Optimization Visualization of results Interpretation of results Design recommendations TOOLS > OVERVIEW THE SIMULATION PROCESS IBPSA - USA OVERVIEW OF SIMULATION

  5. ENERGY SIMULATION > WHAT IT DOES ENERGY STORAGE EXTERNAL ENERGY SOURCES AIR HVAC SYSTEMS WATER HVAC SYSTEMS THERMAL ZONE INTERNAL ENERGY SOURCES ENERGY INPUT ENERGY INPUT ENERGY INPUT ENERGY INPUT BY AIR/WATER HVAC SYSTEMS IBPSA - USA OVERVIEW OF SIMULATION

  6. ENERGY SIMULATION > HOW IT WORKS WEATHER DATA WEATHER DATA TIME HISTORY SHADING GEOMETRY SOLAR MODELS BUILDING FABRIC MODELS MATERIALS PROPERTIES SOLAR ENERGY INPUTS HEAT INPUT SOLAR ENERGY INPUTS GLAZING MODELS HEAT INPUT OVERALL AIR HEAT BALANCE MODEL HVAC SYSTEMS MATERIALS PROPERTIES WEATHER DATA HEAT INPUT HEAT INPUT INTERNAL SOURCES MODELS TIME HISTORY IBPSA - USA OVERVIEW OF SIMULATION

  7. INPUTS Weather data Building geometry Construction type HVAC type / usage Occupancy info Quantity of users Lights Equipment Usage OUTPUTS Space temperatures Surface temperatures Humidity levels HVAC parameters Energy consumption Component System Whole-building ENERGY SIMULATION > INPUTS & OUTPUTS IBPSA - USA OVERVIEW OF SIMULATION

  8. ENERGY SIMULATION > OUTPUTS Energy consumption of various mechanical systems IBPSA - USA OVERVIEW OF SIMULATION

  9. DAYLIGHTING ANALYSIS TOOLS IBPSA - USA OVERVIEW OF SIMULATION

  10. DAYLIGHTING ANALYSIS > WHAT IT DOES NATURALLIGHT SOURCES DIRECT DIFFUSE REFLECTED ARTIFICIALLIGHT SOURCES INTERNAL REFLECTION AND ABSORBTION IBPSA - USA OVERVIEW OF SIMULATION

  11. DAYLIGHTING ANALYSIS > HOW IT WORKS RAY TRACING VIRTUAL SCREEN VIEWPOINT IBPSA - USA OVERVIEW OF SIMULATION

  12. DAYLIGHTING ANALYSIS > HOW IT WORKS RADIOSITY IBPSA - USA OVERVIEW OF SIMULATION

  13. DAYLIGHTING ANALYSIS > OUTPUT ILLUMINANCE LEVELS MAP ILLUMINANCE LEVELS RENDERING PROJECT ► IBPSA - USA OVERVIEW OF SIMULATION IMAGES: COURTESY OF ANDREW LAU ARCHITECT: OWP/P

  14. MULTIZONE AIRFLOW TOOLS IBPSA - USA OVERVIEW OF SIMULATION

  15. MULTIZONE AIRFLOW > WHAT IT DOES ZONE 4 CRACK LARGE OPENING POLLUTANT SOURCE ZONE 1 ZONE 2 ZONE 3 IBPSA - USA OVERVIEW OF SIMULATION

  16. MULTIZONE AIRFLOW > HOW IT WORKS EXTERNAL PRESSURES AIRFLOW PATHS ZONES + - EXTERNAL PRESSURES PRESSURE SOURCE (FAN) RESISTANCES(windows, doors, cracks, other openings) IBPSA - USA OVERVIEW OF SIMULATION

  17. COMPUTATIONAL FLUID DYNAMICS CFD TOOLS IBPSA - USA OVERVIEW OF SIMULATION

  18. CFD > WHAT IT DOES AIR INLET AIR INLET AT ANY POINT:SPEED,DIRECTION,TEMPERATURE,OTHER VARIABLES AIR OUTLET HEAT SOURCE IBPSA - USA OVERVIEW OF SIMULATION

  19. CFD > HOW IT WORKS CONSERVATION OF:MASS,MOMENTUM,AND ENERGY IBPSA - USA OVERVIEW OF SIMULATION

  20. INPUTS Building geometry Heat / pollutant sources Boundary conditions State of fluid at edge of domain. Mesh OUTPUTS Temperature Speed and direction Pollutant concentration Wholefield values Calculated metrics Thermal comfort Mean age of air CFD > HOW IT WORKS IBPSA - USA OVERVIEW OF SIMULATION

  21. INFORMATION RESOURCES IBPSA>www.ibpsa.org ASHRAE>www.ashrae.org • Technical Committee 4.7: Energy Calculations • Technical Committee 4.10: Indoor Environment Modeling Building Energy Software Tools Directory • www.eere.energy.gov/buildings/tools_directory/ BLDG-SIM Mailing List >www.gard.com/ml/bldg-sim.htm • Forum for users of energy simulation programs. Radiance Knowledge Database>www.radiance-online.org/ • Website for Radiance users and a platform for further development. CFD Online (all industries) > www.cfd-online.com Research publications • ASHRAE Transactions • Energy and Buildings(Elsevier) • Building and Environment(Elsevier) IBPSA - USA OVERVIEW OF SIMULATION

  22. DISCUSSION QUESTIONS ? IBPSA - USA OVERVIEW OF SIMULATION

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