modelRoomHeatMassBalance

Information

Partial model for a room heat and mass balance.

This is the base class for Buildings.ThermalZones.Detailed.CFD and for Buildings.ThermalZones.Detailed.MixedAir

See Buildings.ThermalZones.Detailed.UsersGuide for detailed explanations.

Parameters

Connectors

Components

Contents

Name	Description
Medium	Medium in the component

Revisions

• February 11, 2022, by Michael Wetter:
  Change parameter isFloor to is_floor, and isCeiling to is_ceiling, for consistency with naming convention.
• September 16, 2021, by Michael Wetter:
  Removed parameter lat because the latitude is now obtained from the weather data bus.
  This is for IBPSA, #1477.
• April 14, 2020, by Michael Wetter:
  Changed homotopyInitialization to a constant.
  This is for IBPSA, #1341.
• November 21, 2016, by Thierry S. Nouidui:
  Removed for loop to avoid translation error in Dymola 2107. This is a work-around for a bug in Dymola which will be addressed in future releases.
• October 29, 2016, by Michael Wetter:
  Added optional capacity at the room-facing surface to reduce the dimension of the nonlinear system of equations, which generally decreases computing time.
  This is for issue 565.
• September 17, 2016, by Michael Wetter:
  Corrected error in annotation to enable the pedantic model check in Dymola 2017 FD01 beta 2.
  This is for issue 557.
• May 2, 2016, by Michael Wetter:
  Refactored implementation of latent heat gain. This is for issue 515.
• August 7, 2015, by Michael Wetter:
  Revised model to allow modeling of electrochromic windows. This is for issue 445.
• March 13, 2015, by Michael Wetter:
  Changed model to avoid a translation error in OpenModelica.
• July 25, 2014, by Michael Wetter:
  Propagated parameter homotopyInitialization.
• August 1, 2013, by Michael Wetter:
  Introduced this model as a partial base class because the latent heat gains are treated differently in the mixed air and in the CFD model.
• July 16, 2013, by Michael Wetter:
  Redesigned implementation to remove one level of model hierarchy on the room-side heat and mass balance. This change was done to facilitate the implementation of non-uniform room air heat and mass balance, which required separating the convection and long-wave radiation models.
  Changed assignment solRadExc(tauGla={0.6 for i in 1:NConExtWin}) to solRadExc(tauGla={datConExtWin[i].glaSys.glass[datConExtWin[i].glaSys.nLay].tauSol for i in 1:NConExtWin}) to better take into account the solar properties of the glass.
• March 7 2012, by Michael Wetter:
  Added optional parameters ove and sidFin to the parameter datConExtWin. This allows modeling windows with an overhang or with side fins.
• February 8 2012, by Michael Wetter:
  Changed model to use new implementation of Buildings.HeatTransfer.Radiosity.OutdoorRadiosity. This change leads to the use of the same equations for the radiative heat transfer between window and ambient as is used for the opaque constructions.
• December 12, 2011, by Wangda Zuo:
  Add glass thickness as a parameter for conExtWinRad. It is needed by the claculation of property for uncoated glass.
• December 6, 2011, by Michael Wetter:
  Fixed bug that caused convective heat gains to be removed from the room instead of added to the room. This error was caused by a wrong sign in Buildings.ThermalZones.Detailed.BaseClasses.MixedAirHeatGain. This closes ticket issue 46.
• August 9, 2011, by Michael Wetter:
  Fixed bug that caused too high a surface temperature of the window frame. The previous version did not compute the infrared radiation exchange between the window frame and the sky. This has been corrected by adding the instance skyRadExcWin and the parameter absIRFra to the model Buildings.ThermalZones.Detailed.BaseClasses.ExteriorBoundaryConditionsWithWindow. This closes ticket issue 36.
• August 9, 2011 by Michael Wetter:
  Changed assignment of tilt in instances bouConExt and bouConExtWin. This fixes the bug in issue 35 that led to the wrong solar radiation gain for roofs and floors.
• March 23, 2011, by Michael Wetter:
  Propagated convection model to exterior boundary condition models.
• December 14, 2010, by Michael Wetter:
  First implementation.