Lecture-4-Energyplus-Simulation-Control--Location-

Lecture4:SimulationControl,Location,andWeatherInputMaterialpreparedbyGARDAnalytics,Inc.andUniversityofIllinoisatUrbana-ChampaignundercontracttotheNationalRenewableEnergyLaboratory.AllmaterialCopyright2002-2003U.S.D.O.E.-Allrightsreserved2ImportanceofthisLecturetotheSimulationofBuildingsEverybuildingisdifferentinmanyways:LocationandexteriorthermalenvironmentConstructionHVACsystemExteriorthermalenvironmentisadrivingforcethatdetermineshowabuildingwillrespondEnergyefficientdesignrequiresanunderstandingofandaresponsetotheexteriorthermalenvironmentThermalsimulationrequiresinformationontheexteriorthermalenvironmenttoproperlyanalyzethebuildingfromanenergyperspective3PurposeofthisLectureGainanunderstandingofhowtocontroltheexteriorenvironmentofthesimulationBuildingLocationWeatherandGroundTemperatureDataLengthofSimulationOtherGeneralFeaturesoftheInput4KeywordsCoveredinthisLectureVersionRunControlLocationDesignDaySpecialDayPeriodRunPeriodDaylightSavingPeriodGroundTemperatureGroundReflectanceSnowGroundReflectanceModifiers5QuickReviewofRelationshipBetweenIDDandIDFFilesIDD:InputDataDictionaryFilewhichdefineswhatinformationshouldbelocatedintheuserinputfileThisfileshouldNOTbemodifiedIDF:InputDataFileUserinputfilecontaininginformationaboutthebuildinganditsprimaryandsecondarysystemsThisfilecanbemodifiedusingatexteditororusingtheIDFEditor6Keyword:VersionIDDDescriptionVERSION,\unique-objectA1;\fieldVersionIdentifier\required-fieldNotes\unique-objectmeansonlyoneoftheseareallowedperIDFfile\required-fieldmeansthisfieldmustbepresentinthedescription7KeywordExample:VersionIDFExamplesVersion,1.1;!ShortenedinputformatVersion,1.1;!-VersionIdentifierNotes:TheVersionidentifierreferstoaversionoftheEnergyPlusprogramUpdatesintheEnergyPlusprogrammayresultinchangestotheIDDAnerrormessagewillresultiftheIDFfileversiondoesnotcorrespondtotheversionofEnergyPlusbeingrunThiscourseisbasedonEnergyPlusVersion1.18Keyword:LocationIDDDescription(shortened)IDDDescription(detailed)Location,A1,\fieldLocationNameN1,\fieldLatitudeN2,\fieldLongitudeN3,\fieldTimeZoneN4;\fieldElevationLocation,\unique-object\min-fields5A1,\fieldLocationName\required-field\typealphaOnlyoneperIDFfileAllfivefieldsarerequiredInformationexpected:anameFieldisacharacterstring9Keyword:LocationIDDDescription(detailed,continued)N1,\fieldLatitude\unitsdeg\minimum-90.0\maximum+90.0\default0.0\note+isNorth,-isSouth,degreeminutesrepresented\noteindecimal(i.e.30minutesis.5)\typerealN2,\fieldLongitude\unitsdeg\minimum-180.0\maximum+180.0\default0.0\note-isWest,+isEast,degreeminutesrepresented\noteindecimal(i.e.30minutesis.5)\typerealBuildingsitelatitude(globalposition)N1indegreesLimits(-90≤N1≤+90)andDefaultValueInterpretationinformationFieldisadecimalvalueBuildingsitelongitude(globalposition)10Keyword:LocationIDDDescription(detailed,continued)N3,\fieldTimeZone\unitshr\minimum-12.0\maximum+12.0\default0.0\noteTimerelativetoGMT.Decimalhours.\typerealN4;\fieldElevation\unitsm\minimum-300.0\maximum6096.0\default0.0\typereal“Political”timezoneN3inhoursBuildingsiteelevationN4inmetersNote11KeywordExample:LocationIDFExampleorNotes:Locationaffectsthesunangles,airproperties,etc.thatthebuildingexperiencesLocation,DENVER,39.750,-104.870,-7.0,1610.26;Location,DENVERCOLORADO,!-LocationName39.750,!-Latitude{deg}-104.870,!-Longitude{deg}-7.0,!-TimeZone{hr(decimal)}1610.26;!-Elevation{m}12Keyword:DesignDayIDDDescription(shortened)DesignDay,A1,\fieldDesignDayNameN1,\fieldMaximumDry-BulbTemperatureN2,\fieldDailyTemperatureRangeN3,\fieldWet-BulbTemperatureAtMaxTempN4,\fieldBarometricPressureN5,\fieldWindSpeedN6,\fieldWindDirectionN7,\fieldSkyClearnessN8,\fieldRainIndicatorN9,\fieldSnowIndicatorN10,\fieldDayOfMonthN11,\fieldMonthA2,\fieldDayTypeN12;\fieldDaylightSavingTimeIndicator13Keyword:DesignDayPurpose:theDesignDayinputsyntaxdefinesasingledayofweatherinformationDesigndaysimulationsareoftenusedforpeakloadorsizingcalculationsDatarequiredforthiskeywordcanbefoundinavarietyofplaces(seenextslide)14DesignDaySourcesMacroDataSetsfolderUS,Canada,andInternational2001ASHRAEdataDatasets–USlocationspre-1997ASHRAEdata,fromBLASTlibrary*.ddyfilesIncludedinweatherdatazipfilesonwebsite2001ASHRAEdata15Keyword:DesignDayIDDDescription(detailed)DesignDay,\min-fields14A1,\fieldDesignDayName\typealpha\required-field\referenceDesignDaysN1,\fieldMaximumDry-BulbTemperature\required-field\unitsC\minimum-70\maximum70\note\typerealKeyword—notealloneword14fields(all)requiredUniquecharacterstringnamefordesigndayOtherreferencestoadesigndayintheIDFwillexpectanexistingdesigndaynameN1isthemaximumdrybulbtemperatureexperienceforthisdesigndayindegreesCelsius16Keyword:DesignDayIDDDescription(detailed)N2,\fieldDailyTemperatureRange\required-field\unitsdeltaC\minimum0\typereal\notemuststillproduceappropriatemaximumdrybulbN3,\fieldWet-BulbTemperatureAtMaxTemp\required-field\unitsC\minimum-70\maximum70\typerealRangeoftemperaturesexpectedUnitsareD°CMustbezeroorgreaterMeancoincidentwet-bulbtempe