EnergyPlus 26.2.0

The U.S. Department of Energy (DOE) has released EnergyPlus version 26.2.0. The full changelog for this release cycle is listed below. For more information about EnergyPlus, please visit www.energyplus.net.

What's Changed

New Features and Enhancements 🌟

• Dew-point temperature setpoint for zone humidity control by @lymereJ in #11500
• EMS actuator for Coil:Heating:DX:SingleSpeed gross rated heating capacity by @brianlball in #11527
• Add EMS actuator for CondFD sky longwave radiation override by @brianlball in #11478
• #11439 - Allow regular expression in field Key Name for Meter:Custom and Meter:CustomDecrement by @jmarrec in #11658
• Add new Schedule:Year:Rules detailed schedule type by @joseph-robertson in #11693
• Extension of MRT Calculation Options Beyond Thermal Comfort Models by @RKStrand in #11718
• #11614 - Implement SpaceLoad Instance + Definition objects by @jmarrec in #11752
• Implementation of Fixed and Variable Absorptances at the Inside Face of Materials by @RKStrand in #11750
• Implementation for ConstructionAssignmentSets by @jmarrec in #11755
• Addition of EMS Inside Face Material Absorptance Control by @RKStrand in #11758
• Add design load reporting for convective water baseboard autosizing by @rraustad in #11634
• Add warning to CoilSystem and SP controlled UnitarySystem for poor control node placement by @rraustad in #11636
• Fix #10761: Warn on high inter-zone mixing relative to timestep by @jmarrec in #11653
• Add Ground Loop Heat Exchangers to Equipment Summary by @rraustad in #11643
• Add warning when users specify a lower than expected Sizing:System Central Heating Maximum System Air Flow Ratio by @rraustad in #11675
• Add outside air system equipment list component node verification by @rraustad in #11659
• Add new LEED table for minimum zone flow and ventilation by @rraustad in #11686
• Correct TU minimum flow and add new LEED ventilation table by @rraustad in #11705
• Allow lower design inlet WB temperature for cooling tower sizing by @rraustad in #11711
• Warn when ITE FlowControlWithApproachTemperatures bypasses the zone cooling setpoint by @dareumnam in #11731
• Add COP report for boilers by @rraustad in #11741
• Expand AFN summary tables to include all wind directions and coefficients by @rraustad in #11749
• Add Heating Design Capacity sizing report for ZoneHVAC:Baseboard:RadiantConvective:Water by @rraustad in #11765
• Emit Annual Table Footnote when the Table is Filtered by @mitchute in #11799

Performance Enhancing Changes 🏁

• Improve Performance of Recurring Error Reporting and Final Error Summarization by @jmarrec in #11774

Defects Repaired 🪲

• Eliminate "Not Fully Enclosed" Warning for Zones With Multiple Spaces by @mitchute in #11498
• Fix WindowManager Construction ReflSolBeamBackCoef Array Fill by @mitchute in #11509
• Fix logic/scoping issue in SimAirServingZones.cc by @dareumnam in #11515
• Calculate a mixed air humrat for heating when no heating load exists and system humidifiers are used by @rraustad in #11484
• Correct Merkel cooling tower sizing crash and reporting issue for U-Factor Times Area at Free Convection by @rraustad in #11487
• Fix VRF crankcase heater calculations for multiple compressors by @rraustad in #11486
• Fix Coil:Cooling:DX cannot mimic Coil:Cooling:DX:MultiSpeed PLF > 1 behavior by @joseph-robertson in #11448
• Adjust Low Flow Warning for Water-to-air Coil in Cycling Fan Mode by @joseph-robertson in #11485
• Fix C API getMeterHandle() to Return a Valid Handle for the First Meter by @mitchute in #11524
• Adjust SurfaceProperty:XXX IDD and fix/improve sunlit fraction schedule checks by @joseph-robertson in #11445
• Fix #10944: unused EMS actuator warning never fires by @brianlball in #11525
• Apply human readable text to autosizing strings by @rraustad in #11492
• fix #7563: EMS meter sensor reads live source sum not stale CurTSValue by @brianlball in #11532
• Fix Incorrect Fluid Prop Warnings by @mitchute in #11543
• Fix #8904: OA node wetbulb actuator silently fails via Python plugin API by @brianlball in #11540
• Catch EMS variables initialized after reference, follow-up by @joseph-robertson in #11551
• #11564 - ZoneHVAC:HybridUnitaryHVAC - Clean up warning messages by @kevin-moos in #11569
• #11563 - ZoneHVAC:HybridUnitaryHVAC - Objective Function to Minimize not referenced by @kevin-moos in #11570
• #11565: ZoneHVAC:HybridUnitaryHVAC - Min/Max OA Temp should not be constrained by default by @kevin-moos in #11573
• Fix EDD and ERR output incorrectly labeled as Warmup by @joseph-robertson in #11578
• Fix WindowProperty:FrameAndDivider IDD and docs issues by @joseph-robertson in #11538
• Pass correct routine name for daylighting warning and severe error messages by @joseph-robertson in #11590
• #11566: ZoneHVAC:HybridUnitaryHVAC - Return Air constraints not referenced by @kevin-moos in #11576
• Update SZVAV controls by @rraustad in #11545
• Fix VRF Thermostat Control Type Issues by @mitchute in #11611
• Fix 5ZoneNightVent3.idf, and test FanPerformance:NightVentilation by @joseph-robertson in #11595
• ZoneBaseboard:OutdoorTemperatureControlled autosizing is missing by @joseph-robertson in #11579
• Fix WindowProperty:FrameAndDivider convection from frame/dividers with projections by @joseph-robertson in #11589
• #11608 - PlantEquipmentOperationSchemes and CondenserEquipmentOperationSchemes - Incorrect scheme priority by @kevin-moos in #11609
• Baseboard connected to a plant but omitted from ZoneHVAC:EquipmentList will now throw a Severe error by @rraustad in #11624
• Set flow to 0 when load is 0 for air-source HeatPump:PlantLoop:EIR:* by @lymereJ in #11602
• Fix WindowProperty:FrameAndDivider divider error checks by @joseph-robertson in #11629
• Fix #11626 - Support existing ZoneControl:Humidistat in HVACTemplate:Zone:IdealLoadsAirSystem by @jmarrec in #11637
• Fix negative cooling coil capacity warning when system cooling load available by @joseph-robertson in #11617
• Fix segfault with MoisturePenetrationDepth by @joseph-robertson in #11645
• Fix #11583 - DaylightingManager.cc: DayltgGlareWithIntWins() incorrectly accumulates across reference points by @jmarrec in #11644
• Fix #7806 - ExpandObjects error handling by @jmarrec in #11646
• Fix #11615 - Virtualenv leaks into PythonEngine + share common code between PythonEngine and PluginManager by @jmarrec in #11649
• Use fan RTF only for cycling fan impact on AFN distribution losses by @lymereJ in #11571
• ZoneHVAC:HybridUnitaryHVAC - Check for ventilation setting before defaulting to standby by @kevin-moos in #11642
• Correct AirTerminal:SingleDuct:ParallelPIU:Reheat secondary air flow sizing by @rraustad in #11654
• Fix capacity correction calculatio...

EnergyPlus 26.2.0, Release Candidate 3

EnergyPlus v26.2.0 release candidate 3. This may be deleted or retagged as v26.2.0.

EnergyPlus v26.2.0, Release Candidate 2

EnergyPlus v26.2.0 release candidate 2. This may be deleted or retagged as v26.2.0.

EnergyPlus v26.2.0, Release Candidate 1

EnergyPlus v26.2.0 release candidate 1. This may be deleted or retagged as v26.2.0.

EnergyPlus 26.2.0, IO Freeze

This is the IO Freeze tag for EnergyPlus v26.2.0.

v26.2.0-alphareleaseFix: Update patched QtIFW to a newer version

• Test for #11632

Longwave Rad Actuators Test Build 2

Test build for internal testing of a feature related to long wave radiation EMS actuators, including the follow-up work on #11621. This build will be deleted.

p.s. It appears GitHub has updated the release label options here to include a "None" option. Previously, there were two checkboxes for a pre-release and the latest release; however, the checkboxes behaved like radio buttons - i.e. either-or, instead of multi-choice. They now have gone to radio buttons for "None," "Pre-release," and "Latest," which is a cleaner interface, IMO. I'm deploying this with the "None" option to see whether that has any consequences.

EMS variables testing

Test changes in #11551.

Docs Artifact Testing 6

One more. TWBD.

EnergyPlus 26.1.0-dlf

EnergyPlus 26.1.0 with the changes from #11491.