.Buildings.UsersGuide.ReleaseNotes.Version_1_0_build2

Information

Version 1.0 build 2 has been released to correct model errors that were present in version 1.0 build 1. Both versions are compatible. In addition, version 1.0 build 2 contains improved documentation of various example models.

The following existing components have been improved in a backward compatible way:

Buildings.Controls
Buildings.Controls.Continuous
Buildings.Controls.Discrete
Buildings.Controls.SetPoints
Improved documentation of models and of examples.
Buildings.Airflow.Multizone
Buildings.Airflow.Multizone.DoorDiscretizedOpen
Buildings.Airflow.Multizone.DoorDiscretizedOperable
Changed the computation of the discharge coefficient to use the nominal density instead of the actual density. Computing sqrt(2/rho) sometimes causes warnings from the solver, as it seems to try negative values for the density during iterative solutions.
Buildings.Airflow.Multizone.Examples Improved documentation of examples.
Buildings.Examples.DualFanDualDuct
Buildings.Examples.DualFanDualDuct.Controls.RoomMixingBox Improved control of minimum air flow rate to avoid overheating.

The following critical errors have been fixed (i.e., errors that can lead to wrong simulation results):

Buildings.HeatTransfer
Buildings.HeatTransfer.Convection.Exterior Fixed error in assignment of wind-based convection coefficient. The old implementation did not take into account the surface roughness.
Buildings.ThermalZones
Buildings.ThermalZones.Detailed.BaseClasses.SolarRadiationExchange In the previous version, the radiative properties of the long-wave spectrum instead of the solar spectrum have been used to compute the distribution of the solar radiation among the surfaces inside the room.
Buildings.ThermalZones.Detailed.BaseClasses.MixedAir Added missing connect statement between window frame surface and window frame convection model. Prior to this bug fix, no convective heat transfer was computed between window frame and room air.
Buildings.ThermalZones.Detailed.BaseClasses.HeatGain Fixed bug that caused convective heat gains to be removed from the room instead of added to the room.

The following issues have been fixed:

Buildings.Fluid.Geothermal.Boreholes
#45 Dymola 2012 FD01 hangs when simulating a borehole heat exchanger. This was caused by a wrong release of memory in freeArray.c.
Buildings.ThermalZones
#46 The convective internal heat gain has the wrong sign.

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