Andrew Corney
The list below from https://github.com/NREL/EnergyPlus/releases summarises the changes made to the EnergyPlus code in version 8.6.
New Features
- #5027 : New simple chilled water cooling panel
- #5093 : Improved Effective Moisture Penetration Depth model
- #5584 : Add Air Source Integrated Heat Pump and Fix Variable Speed Heat Pump Water Heater COP Bug
- #5588 : Adds underground column to the Zone Summary table in IVRS
- #5633 : Add Heat Recovery Capability for Variable Refrigerant Flow Simulations
- #5634 : Add AirflowNetwork zone pressure control
- #5646 : Intelligent Defaults for Minimum Flow Fraction on VAV Terminals
- #5676 : Connect DOAS to more ZoneHVAC Equipment - PTAC, PTHP, VRF, and UnitarySystem
- #5677 : Provided Crankcase heater outputs for Coil:Cooling:DX:MultiSpeed
- #5698 : Allow ZoneCrossMixing to be used in overlapping zones and revise some mixing output variables
- #5725 : More Daylighting Control Sensors/Integrate DElight
- #5746 : Add an optional fuel type to OtherEquipment
- #5809 : Add Heating Coil that can handle other fuel types
- #5824 : Nightcycle manager new control types and zone lists
- #5867 : EP-Launch-Lite (v2.0)
Performance Enhancements
- #5776 : Improve ESO file write speed
Defects Repaired
- #5312 : Fixed bug that showed opaque window when solar reflectance was zero.
- #5485 : Stratified Tank Optimizations
- #5561 : Fixed NAN causing fatal error due to negative velocity in CrossVentilation RoomAirModel
- #5572 : Fixed the degree day bases used with the LEED and Climatic summaries
- #5575 : Removing Deprecated Fields from Several Objects
- #5580 : LEED Summary EAp2-4/5 report row shown in uppercase and document special end-use subcategory tags
- #5582 : Remove OA flow rate dependency on Branch Maximum Flow Rate and deprecate the field
- #5584 : Add Air Source Integrated Heat Pump and Fix Variable Speed Heat Pump Water Heater COP Bug
- #5590 : Fully autosized version of 5ZoneWLHPPlantLoopTower runs very slow
- #5593 : Address issue #5126 and a bug in the ExternalInterface
- #5594 : Update life cycle cost tables to handle water utility tariff costs correctly
- #5598 : Removed automatic reporting of tariff and lifecycle reports now they need to be explicitly requested.
- #5609 : Fix air cooled absorption chiller heaters
- #5615 : Fix LaTeX page numbers
- #5616 : Add support for JtokWH conversion in leed table
- #5621 : Documentation Fixups
- #5624 : Correct crash with only single node reference in input check CheckNod…
- #5632 : Correct ZoneHVAC system air flow rate to be the same as variable speed DX coil air flow to eliminate flow imbalance warnings
- #5639 : Add rows for district heating and cooling virtual rate in LEED EAp2-3
- #5642 : SPMs with same reference and set point node name should fatal
- #5643 : Restore "Advanced Surface Concepts" in Eng Ref + Correct Display Equations that should be Inline
- #5645 : Updated documentation on RunMultiDir.bat
- #5647 : Fix various documentation bugs: equation delimitation, missing figure, missing table
- #5649 : Put references to DOE2 BLAST and ParametricSpreadsheets in docs
- #5651 : Added EMS On/Off Supervisory control for air loop water coils
- #5652 : Fix to add opening area for windows to IVRS report.
- #5654 : Fixing several NANs found in user file related to storage tanks
- #5658 : Allowed venting availability to control openings with control mode ASHRAE55Adaptive or CEN15251Adaptive
- #5660 : Trap uninitialized EMS variables and math failures, and warn for unused actuators
- #5666 : Output:EnergyManagementSystem now creates .edd file
- #5669 : Fix conversion of unitless variables to IP in tabular output and added missing conversions
- #5670 : Fixed NAN problem with a horizontal door as a floor sub-surface in displacement ventilation room air model
- #5671 : Use tighter limits on FCU water flow rate if RegulaFalsi iteration limit is exceeded
- #5674 : Fix hang when using malformed Table:TwoIndependentVariables
- #5678 : Fix array bound mismatch with transitioning 8.1 to 8.2 for ZoneHVAC:UnitHeater
- #5680 : Fix WeatherProperty:SkyTemperature with weather file with small time intervals
- #5690 : Replace missing EMS in example file LrgOff_GridStorageEMSSmoothing
- #5691 : Corrections to WaterToAirHeatPump (WSHP) water flow control
- #5694 : Fixed constant flow radiant heat not operating when it should
- #5701 : Changes interpolation for wind direction when to do it properly around 0 degrees
- #5702 : Provide warning for DX heating coil when DefrostEIR performance curve name is blank and defrost method is reverse cycle
- #5703 : Correct OA controller mixed air node set point calculation to allow values <0
- #5707 : #4110 Correct Reverse Design Day testing so that results are identical
- #5708 : Fixed incorrect array indices in ZoneMassConservation object report variables
- #5709 : Fixed NaN in heat balance due to not enclosed space
- #5713 : Fix memory allocation bug in FMI libraries.
- #5715 : #5524 ZoneHVAC:OutdoorAirUnit reported fan power and energy corrected with exhaust fan
- #5716 : Eliminate warning for zones with <6 surfaces and improve warning for <4 surfaces
- #5717 : Added support for tool coupling.
- #5719 : Tables of One and Two Independent Variables do not allow extrapolation when appropriate
- #5721 : Airflow network distribution outputs for node pressure and flow now report zero when the distribution system is off
- #5724 : Correct UnitarySystem and Multispeed Heat Pump heat recovery calculation to honor maximum outlet temperature
- #5731 : Detect interior movable insulation used with internal source/sink construction and fatal warning
- #5732 : Replace the field name "controlled zone name" in two objects for consistency with other objects
- #5735 : Fixing Typos in Documentation
- #5736 : Documentation fixes
- #5738 : AirloopHVAC:UnitarySystem using Control Type = Load fixed to properly control multistage heating coil
- #5741 : Fix diffuse Solar when using shading with transmittance schedule
- #5743 : Add auto-sizing capability for Nominal Air Flow Rate and Nominal Air Face Velocity in Desiccant BalancedFlow Performance DataType1 object
- #5748 : ElectricLoadCenter:Distribution: Storage Charge Power Fraction Schedule Name was not a Schedule
- #5751 : Corrections to sizing simulation logging to fix crashes, subtimesteps, and report during warmup
- #5754 : Fixed heatpump water heater (HPWH) crash when Outdoor Air Node name is required but is blank
- #5756 : Remove stray Unix newlines from error messages
- #5758 : Use StdRhoAir to calculate OA mass flow rate for consistency
- #5760 : 121174135 compute int thermal absorp factors movable insulation bugs
- #5761 : #5400 water heater heat pump pumped condenser part load ratio calculation failed warning
- #5762 : 124975981 Correction of Absorptivity Assignment in Movable Insulation
- #5763 : Correct EMS parsing of RhovFnTdbRh and RhovFnTdbRhLBnd0C. Similar issue w…
- #5774 : Addresses inconsistent reference hot water temperature are used to calculate density in water flow autosize
- #5779 : Fixed heat exchanger sizing when used with ZoneHVAC:EnergyRecoveryVentilator
- #5781 : Use standard air density to calculate oa mass flow rate in dual duct for consistency
- #5782 : #5629 chiller electric eir air/evap cooled condenser outlet node conditions not correct and evap condenser water use = 0
- #5784 : Create live url links for all URLs in documents.
- #5785 : Fix Warnings Reported in Build Log for EngineeringReference
- #5787 : AvailabilityManager:OptimumStart does not work with multiple air loops.
- #5791 : Adds a warning when plant loop volume and operating flow rates are mismatched
- #5792 : Fix EMS actuator initialization to Null at get input
- #5794 : Fix Controller:OutdoorAir and Controller:MechanicalVentilation schedules and precedence of limits
- #5798 : Movable Insulation Not Properly Incorporated into Interior Radiant Exchange
- #5799 : rework unit test for initialization check
- #5800 : Fan coil max iteration warnings
- #5801 : Fix various documentation issues
- #5804 : Correction of View Factors for Three or Less Surface Zones
- #5810 : Implement new output variable Surface Internal User Specified Location Temperature for Construction:InternalSource
- #5811 : Radiant baseboards, fill zone index to avoid hard crash
- #5812 : Clean out OpenMP remnants
- #5813 : Fix edge case for non-unique names in WindowMaterial:Gap
- #5815 : Fixing calculation of EMPD surface mass transfer coefficient based on known heat-transfer coefficient
- #5817 : Clean up various IDD issues and restore DisplayInputInAudit environment variable
- #5826 : Fix DElight illuminance reference point zero outputs; other daylighting cleanup
- #5829 : Fix plant coincident sizing logic problem
- #5830 : Enforce full distribution of high temp radiant energy to surfaces and people
- #5831 : Cooling Towers may fail to autosize tower UA
- #5834 : Fix non-integrated water-side economizer minimum delta temperature control error
- #5840 : EP-Launch remove multi-thread
- #5850 : Low Temperature Radiant System Sizing Concerns and Pump Efficiency Bug
- #5852 : For non-convex quad fix centroid calculation to avoid unrealistic z values
- #5861 : Correction of Swimming Pool Evaporation Rate Bug and Documentation Errors
- #5866 : Correct Scalable Sizing Crash for Various Zone Equipment
- #5869 : Fix fatal error in GetInternalVariableValue when non-metered variable used on a custom meter
- #5875 : Battery, storage, and other minor documentation fixes
- #5876 : Fix memo and extensible flags on IDD object
- #5877 : Don't fix up executables on CentOS
- #5879 : Parallel fan-powered induction unit zone fan control improvements
- #5881 : Change test tank height for heaters in stratified water heater
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