OVERVIEW OF SIMULATION PRESENTATION FOR ENGINEERS PRESENTERS NAME

OVERVIEW OF SIMULATION PRESENTATION FOR ENGINEERS PRESENTER’S NAME OF EVENT LOCATION IBPSAINTERNATIONAL - USA BUILDING PERFORMANCE OVERVIEW SIMULATION OF SIMULATION ASSOCIATION - USA

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

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

TOOLS > OVERVIEW THE SIMULATION PROCESS 1. Information gathering 2. Data collection 6. Debug 7. Calibration 8. Optimization 3. Identification of modeling goals 9. Visualization of results 4. Model-building 10. Interpretation of results 5. Run the simulation IBPSA - USA 11. Design recommendations OVERVIEW OF SIMULATION

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

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

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

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

TOOLS DAYLIGHTING ANALYSIS IBPSA - USA OVERVIEW OF SIMULATION

DAYLIGHTING ANALYSIS > WHAT IT DOES NATURAL LIGHT SOURCES DIR EC T DIF EC FL RE FU SE TE ARTIFICIAL LIGHT SOURCES D INTERNAL REFLECTION AND ABSORBTION IBPSA - USA OVERVIEW OF SIMULATION

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

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

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

TOOLS MULTIZONE AIRFLOW IBPSA - USA OVERVIEW OF SIMULATION

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

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

CFD COMPUTATIONAL FLUID TOOLS DYNAMICS IBPSA - USA OVERVIEW OF SIMULATION

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

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

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

INFORMATION RESOURCES IBPSA > www. ibpsa. org ASHRAE > www. ashrae. org ú ú Technical Committee 4. 7: Energy Calculations Technical Committee 4. 10: Indoor Environment Modeling Building Energy Software Tools Directory ú www. eere. energy. gov/buildings/tools_directory/ BLDG-SIM Mailing List > www. gard. com/ml/bldg-sim. htm ú Forum for users of energy simulation programs. Radiance Knowledge Database > www. radiance-online. org/ ú Website for Radiance users and a platform for further development. CFD Online (all industries) > www. cfd-online. com Research publications ú ú ú ASHRAE Transactions Energy and Buildings (Elsevier) Building and Environment (Elsevier) IBPSA - USA OVERVIEW OF SIMULATION

DISCUSSION QUESTIONS ? IBPSA - USA OVERVIEW OF SIMULATION