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  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of The Practical Application of Building Simulation Tools in Building Simulation Tools in Designing a Real BuildingDesigning a Real Building

    Peter Simmonds Peter Simmonds Bungane Bungane MehlomakuluMehlomakulu

    IBE Consulting EngineersIBE Consulting Engineers

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Case Study: The BuildingCase Study: The Building

    1.1 Million 1.1 Million sqftsqft46,000 46,000 sqftsqft per floorper floorLarge Atrium spaceLarge Atrium space

    Base case conditioning systemBase case conditioning systemOverhead VAVOverhead VAV

    Alternates: Alternates: Underfloor air distribution systemUnderfloor air distribution system

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Analysis MethodologyAnalysis Methodology

    Load AnalysisLoad AnalysisComfort AnalysisComfort AnalysisEnergy AnalysisEnergy AnalysisChiller Plant AnalysisChiller Plant AnalysisComputation Fluid DynamicsComputation Fluid Dynamics

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    DiscussionDiscussion

    Load Validation Load Validation Presenting Comfort AnalysisPresenting Comfort AnalysisEnergy AnalysisEnergy AnalysisAcceptance of Chiller Plant AnalysisAcceptance of Chiller Plant Analysis

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Methodology: Load AnalysisMethodology: Load Analysis

    ASHRAE Load Calculations in Excel ASHRAE Load Calculations in Excel spreadsheetspreadsheet

    Based on Basis of Design Documentation and Based on Basis of Design Documentation and areas. Continually updated through the design areas. Continually updated through the design phase. Included:phase. Included:

    EPD, LPD, EPD, LPD, OccOcc. Dens. OA Loads, Coil loads. Dens. OA Loads, Coil loads

    Trane TraceTrane TraceLoad validation against industry standardLoad validation against industry standard

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Methodology: Comfort AnalysisMethodology: Comfort Analysis

    ROOM module of E+TA ROOM module of E+TA Used to determine comfort conditions in each Used to determine comfort conditions in each space for different conditioning systemsspace for different conditioning systems

    Results from comfort analysis: space dry Results from comfort analysis: space dry bulb, mean radiant temperature, operative bulb, mean radiant temperature, operative temperatures entered into energy temperatures entered into energy simulation software, and Trace Load simulation software, and Trace Load calculation softwarecalculation software

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Comfort AnalysisResults: Comfort AnalysisInternal Dry Bulb Temperatures, Overhead VAV

    (Varying Air Changes, Constant Supply Temperature 13C)

    12

    14

    16

    18

    20

    22

    24

    26

    28

    30

    32

    34

    36

    9 10 11 12 13 14 15 16 17 18

    Hour of Day

    Tem

    pera

    ture

    (C

    )

    External Temperature 8ach_23C (TAM RP 1) 6ach_23C (TAM RP 1) 4ach_23C (TAM RP 1)3ach_23C (TAM RP 1) 2ach_23C (TAM RP 1)

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Comfort AnalysisResults: Comfort AnalysisPercentage People Dissatisfied, Overhead VAV

    (Varying Air Changes, Constant Supply Temperature 13C)

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    9 10 11 12 13 14 15 16 17 18

    Hour of Day

    Peop

    le D

    issa

    tisfie

    d %

    8ach_23C (TAM RP 1) 6ach_23C (TAM RP 1) 4ach_23C (TAM RP 1) 3ach_23C (TAM RP 1) 2ach_23C (TAM RP 1)

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Comfort AnalysisResults: Comfort AnalysisPercentage People Dissatisfied, Displacement Ventilation

    (Varying Air Changes, Constant Supply temperature 17C)

    0

    10

    20

    30

    9 10 11 12 13 14 15 16 17 18

    Hour of Day

    Peop

    le D

    issa

    tisfie

    d %

    3ach_17C (TAM RP 1) 3.5ach_17C (TAM RP 1) 2.5ach_17C (TAM RP 1)

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Comfort AnalysisResults: Comfort AnalysisPredicted Mean Vote, Overhead VAV

    (Varying Air Changes, Constant Supply Temperature 13C)

    -3

    -2.5

    -2

    -1.5

    -1

    -0.5

    0

    0.5

    1

    1.5

    2

    9 10 11 12 13 14 15 16 17 18

    Hour of Day

    Pred

    icte

    d M

    ean

    Vote

    8ach_23C (TAM RP 1) 6ach_23C (TAM RP 1) 4ach_23C (TAM RP 1) 3ach_23C (TAM RP 1) 2ach_23C (TAM RP 1)

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Comfort AnalysisResults: Comfort AnalysisPredicted Mean Vote, Displacement Ventilation

    (Varying Air Changes, Constant Supply temperature 17C)

    -1

    -0.5

    0

    0.5

    1

    9 10 11 12 13 14 15 16 17 18

    Hour of Day

    Pred

    icte

    d M

    ean

    Vote

    3ach_17C (TAM RP 1) 3.5ach_17C (TAM RP 1) 2.5ach_17C (TAM RP 1)

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Comfort Analysis to Energy AnalysisComfort Analysis to Energy Analysis

    Optimizing Space comfort conditions and Optimizing Space comfort conditions and then analyzing energy consumption.then analyzing energy consumption.Understanding parameters PMV/PPD and Understanding parameters PMV/PPD and how they related to load calculations, and how they related to load calculations, and current simulation software.current simulation software.

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Methodology: CFDMethodology: CFD

    Used to model large atrium spaceUsed to model large atrium spaceComplex results and analysis omittedComplex results and analysis omittedProvided average space temperature used Provided average space temperature used to input into simulation software.to input into simulation software.

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Methodology: CFDMethodology: CFD

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a Real BuildingSimulation Tools in Designing a Real Building

    Results: Load AnalysisResults: Load Analysis

    Trace Load: 1,900 tonsTrace Load: 1,900 tonsExcel Spreadsheet: 2,000 tonsExcel Spreadsheet: 2,000 tonsVisualDOE: 1,950 tonsVisualDOE: 1,950 tons

  • SimBuildSimBuild 2004 IBPSA2004 IBPSA--USA Boulder, CO USA Boulder, CO August 4August 4--6, 20046, 2004

    The Practical Application of Building The Practical Application of Building Simulation Tools in Designing a