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vikrants
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R2025a
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‎Components/Building/BuildingModel.png‎

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‎Components/Building/Room/RoomHeaterModel.slx‎

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‎Components/Building/Room/generateCustomRoomComponents.m‎

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‎Components/Libraries/+ExternalWall/WallExternal.ssc‎

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component (Propagation = blocks) WallExternal
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% Wall External:2.5
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% This block is used to specify a solid external wall with solar Load.
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% This block combines Wall Selector block and the Solar Radiation on
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% Surface block to model external walls with solar radiation.
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% <br/>
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% <br/>
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% <a href="matlab:open DocumentationExternalWall.html">Documentation for External Wall</a>
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% <br/>
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% Copyright 2025 The MathWorks, Inc.
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annotations
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A : Side=Left;
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B : Side=Right;
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R : Side=Left;
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UILayout = [UIGroup("Wall", extWallModel, wallLength, wallHeight, wallThickness, ...
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wallMaterialDen, wallMaterialCp, wallAbsorptivity, wallThermalK)
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UIGroup("Window", winLength, winHeight, winThickness, ...
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winMaterialDen, winMaterialCp, winAbsorptivity, ...
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winThermalK, winTransmissivity)
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UIGroup("Vent", ventLength, ventHeight)
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UIGroup("Heat Transfer", extToWallHTC, intToRoomHTC, iniT)
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UIGroup("Location", latitude, longitude, localTime, dayLightS)
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UIGroup("Surface Orientation", surfAngle, surfUnitV)
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UIGroup("Solar Data Parameterization", startYear, startMonth, startDay, startHr, numHrsData, interp_method,extrap_method)];
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end
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inputs
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R = {0, 'W/m^2'}; % Rad
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end
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nodes
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A = foundation.thermal.thermal; % A
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B = foundation.thermal.thermal; % B
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end
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parameters
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extWallModel = wallExternalModelOption.wallSolarWinVent; % Select wall type
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% Wall properties
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wallLength = {5, "m"}; % Wall length
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wallHeight = {3, "m"}; % Wall height
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wallThickness = {0.3, "m"}; % Wall thickness
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wallMaterialDen = {4000, "kg/m^3"}; % Wall material density
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wallMaterialCp = {1870, "J/(K*kg)"}; % Wall material heat capacity
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wallAbsorptivity = 0.5; % Wall absorptivity
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wallThermalK = {2, "W/(K*m)"}; % Wall thermal conductivity
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% Vent properties
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ventLength = {0.1, "m"}; % Vent length
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ventHeight = {0.1, "m"}; % Vent height
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% Window properties
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winLength = {1, "m"}; % Window length
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winHeight = {0.5, "m"}; % Window height
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winThickness = {0.007, "m"}; % Window glass thickness
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winMaterialDen = {2500, "kg/m^3"}; % Window glass material density
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winMaterialCp = {787, "J/(K*kg)"}; % Window glass material heat capacity
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winAbsorptivity = 0.35; % Window glass Absorptivity
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winThermalK = {1, "W/(K*m)"}; % Window glass thermal conductivity
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winTransmissivity = 0.45; % Window glass transmissivity
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extToWallHTC = {5, "W/(K*m^2)"}; % Effective heat transfer coefficient from ambient to wall surface
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intToRoomHTC = {5, "W/(K*m^2)"}; % Effective heat transfer coefficient from internal surface to the room
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iniT = {300, "K"}; % Initial temperature
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% Solar Model
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startYear = {2025, "1"}; % Year for start time
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startMonth = {1, "1"}; % Month for start time
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startDay = {1, "1"}; % Day for start time
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startHr = {1,"1"}; % Hour of the day for start time
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numHrsData = {24, "1"}; % Number of hours of solar data
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latitude = {5, "1"}; % Latitude of the location
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longitude = {5, "1"}; % Longitude of the location
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localTime = {5, "1"}; % Longitude reference for local time calculations
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surfAngle = {90, "deg"}; % Surface angle wrt ground
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surfUnitV = {[0,-1], "1"}; % Unit outward normal direction vector
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dayLightS = {0, "1"}; % Daylight hour savings
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interp_method = simscape.enum.interpolation.linear; % Interpolation method
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extrap_method = simscape.enum.extrapolation.nearest; % Extrapolation method
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end
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components(ExternalAccess = observe)
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WallOrientation = SolarRadiationOnSurface.solarRadiationOnSurface(...
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dayLightS = dayLightS, ...
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extrap_method = extrap_method, ...
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interp_method = interp_method, ...
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latitude = latitude, ...
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localTime = localTime, ...
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longitude = longitude, ...
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numHrsData = numHrsData, ...
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startDay = startDay, ...
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startHr = startHr, ...
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startMonth = startMonth, ...
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startYear = startYear, ...
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surfAngle = surfAngle, ...
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surfUnitV = surfUnitV);
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end
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connections
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connect(WallOrientation.Sf,WallModel.S);
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connect(R,WallOrientation.S);
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connect(B,WallModel.B);
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connect(A,WallModel.A);
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end
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if extWallModel == wallExternalModelOption.wallSolar
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annotations
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Icon = "extWallSolar.png";
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[winLength,winHeight,ventLength,ventHeight,winMaterialDen,winMaterialCp,winAbsorptivity,...
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winThermalK,winThickness,winTransmissivity] : ExternalAccess=none;
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end
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components(ExternalAccess=observe)
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WallModel = WallSelector.wallSelector(...
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extToWallHTC = extToWallHTC, ...
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iniT = iniT, ...
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intToRoomHTC = intToRoomHTC, ...
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optWall = int32(3), ...
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wallAbsorptivity = wallAbsorptivity, ...
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wallHeight = wallHeight, ...
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wallLength = wallLength, ...
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wallMaterialCp = wallMaterialCp, ...
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wallMaterialDen = wallMaterialDen, ...
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wallThermalK = wallThermalK, ...
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wallThickness = wallThickness);
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end
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elseif extWallModel == wallExternalModelOption.wallSolarWin
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annotations
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Icon = "extWallSolarWin.png";
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[ventLength,ventHeight] : ExternalAccess=none;
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end
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components(ExternalAccess=observe)
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WallModel = WallSelector.wallSelector(...
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extToWallHTC = extToWallHTC, ...
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iniT = iniT, ...
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intToRoomHTC = intToRoomHTC, ...
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optWall = int32(4), ...
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wallAbsorptivity = wallAbsorptivity, ...
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wallHeight = wallHeight, ...
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wallLength = wallLength, ...
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wallMaterialCp = wallMaterialCp, ...
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wallMaterialDen = wallMaterialDen, ...
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wallThermalK = wallThermalK, ...
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wallThickness = wallThickness, ...
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winLength = winLength, ...
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winHeight = winHeight, ...
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winThickness = winThickness, ...
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winMaterialDen = winMaterialDen, ...
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winMaterialCp = winMaterialCp, ...
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winAbsorptivity = winAbsorptivity, ...
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winThermalK = winThermalK, ...
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winTransmissivity = winTransmissivity);
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end
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elseif extWallModel == wallExternalModelOption.wallSolarVent
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annotations
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Icon = "extWallSolarVent.png";
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[winLength,winHeight,winMaterialDen,winMaterialCp,winAbsorptivity,winThermalK,...
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winThickness,winTransmissivity] : ExternalAccess=none;
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end
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components(ExternalAccess=observe)
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WallModel = WallSelector.wallSelector(...
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extToWallHTC = extToWallHTC, ...
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iniT = iniT, ...
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intToRoomHTC = intToRoomHTC, ...
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optWall = int32(6), ...
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wallAbsorptivity = wallAbsorptivity, ...
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wallHeight = wallHeight, ...
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wallLength = wallLength, ...
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wallMaterialCp = wallMaterialCp, ...
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wallMaterialDen = wallMaterialDen, ...
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wallThermalK = wallThermalK, ...
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wallThickness = wallThickness, ...
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ventLength = ventLength, ...
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ventHeight = ventHeight);
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end
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else % extWallModel == wallExternalModelOption.wallSolarWinVent
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annotations
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Icon = "extWallSolarWinVent.png";
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end
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components(ExternalAccess=observe)
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WallModel = WallSelector.wallSelector(...
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extToWallHTC = extToWallHTC, ...
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iniT = iniT, ...
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intToRoomHTC = intToRoomHTC, ...
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optWall = int32(5), ...
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wallAbsorptivity = wallAbsorptivity, ...
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wallHeight = wallHeight, ...
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wallLength = wallLength, ...
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wallMaterialCp = wallMaterialCp, ...
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wallMaterialDen = wallMaterialDen, ...
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wallThermalK = wallThermalK, ...
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wallThickness = wallThickness, ...
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ventLength = ventLength, ...
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ventHeight = ventHeight, ...
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winLength = winLength, ...
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winHeight = winHeight, ...
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winThickness = winThickness, ...
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winMaterialDen = winMaterialDen, ...
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winMaterialCp = winMaterialCp, ...
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winAbsorptivity = winAbsorptivity, ...
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winThermalK = winThermalK, ...
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winTransmissivity = winTransmissivity);
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end
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end
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end

‎Components/Libraries/+RoomRadiator/roomWallRadiator.ssc‎

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component(Propagation=Blocks) roomWallRadiator
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% Room Wall Radiator : 2.5
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% This block is used to specify a radiator inside a room. The block has
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% two Thermal-Liquid (TL) nodes, A and B, to model the cooling or
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% heating fluid. The Thermal node R connects to the room thermal mass.
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% The input port V is used to control the flow into the radiator. When
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% set to 0, the whole cooling fluid passes through the radiator pipes.
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% When it is set to 1, the whole cooling liquid passes through a by-pass
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% circuit and the radiator is non-functional.
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% <br/>
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% <br/>
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% <a href="matlab:open DocumentationRoomRadiator.html">Documentation for Room Radiator</a>
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% <br/>
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% Copyright 2025 The MathWorks, Inc.
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annotations
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Icon = "roomWallRadiator.png";
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UILayout = [UIGroup("Piping", pipeHydrDia,pipeLength,pipeArea,pipeRoughness)
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UIGroup("Heat Transfer",htc,iniTemperature)];
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M : Side=Right;
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TL_A : Side=Left;
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TL_B : Side=Right;
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TL_V : Side=Left;
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end
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inputs
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TL_V = 0; % V
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end
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nodes
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TL_A = foundation.thermal_liquid.thermal_liquid; % A
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M = foundation.thermal.thermal; % R
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TL_B = foundation.thermal_liquid.thermal_liquid; % B
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end
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parameters
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pipeHydrDia = {1.5e-2, "m"}; % Pipe hydraulic diameter
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pipeLength = {1, "m"}; % Pipe length
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pipeArea = {1.75e-4, "m^2"}; % Pipe cross-sectional area
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pipeRoughness = {1e-6, "m"}; % Pipe roughness
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iniTemperature = {300, "K"}; % Initial temperature
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htc = {10, "W/(K*m^2)"}; % Heat transfer coefficient
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end
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components(ExternalAccess=observe)
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Radiator = RoomRadiatorPiping(radiatorConvArea=pi*pipeHydrDia*pipeLength,...
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radiatorConvHTC=htc,gateValveOrificeDia=pipeHydrDia,...
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maxGateValveOrificeDia=pipeHydrDia,radiatorPipeHydrDia=pipeHydrDia,...
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radiatorPipeT=iniTemperature,radiatorPipeArea=pipeArea,radiatorPipeLen=pipeLength,...
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radiatorPipeRoughness=pipeRoughness,gateValveBypassOrificeDia=pipeHydrDia,...
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maxGateValveBypassOrificeDia=pipeHydrDia,radiatorBypassPipeHydrDia=pipeHydrDia,...
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radiatorBypassPipeT=iniTemperature,radiatorBypassPipeArea=pipeArea,...
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radiatorBypassPipeLen=pipeLength,radiatorBypassPipeRoughness=pipeRoughness);
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end
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connections
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connect(Radiator.TL_A,TL_A);
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connect(Radiator.TL_B,TL_B);
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connect(Radiator.M,M);
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end
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equations
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Radiator.TL_V == TL_V;
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end
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end

‎Components/Libraries/+RoomUnderFloorPiping/roomUnderFloorPiping.ssc‎

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component(Propagation=Blocks) roomUnderFloorPiping
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% Room Underfloor Piping : 2.5
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% This block is used to specify underfloor heating or cooling inside a
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% room. The block has two Thermal-Liquid (TL) nodes, A and B, to model
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% the fluid. The Thermal node R connects to the room thermal mass.
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% The input port V is used to control the flow into the radiator. When
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% set to 0, the whole cooling fluid passes through the radiator pipes.
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% When it is set to 1, the whole cooling liquid passes through a by-pass
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% circuit and the radiator is non-functional.
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% <br/>
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% <br/>
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% <a href="matlab:open DocumentationRoomUnderFloorPiping.html">Documentation for Room Under-floor Piping</a>
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% <br/>
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% Copyright 2025 The MathWorks, Inc.
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annotations
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Icon = "roomUnderFloorPiping.png";
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UILayout = [UIGroup("Piping", pipeHydrDia,pipeLength,pipeArea,pipeRoughness)
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UIGroup("Heat Transfer",htc,iniTemperature)];
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M : Side=Right;
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TL_A : Side=Left;
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TL_B : Side=Right;
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TL_V : Side=Left;
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end
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inputs
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TL_V = 0; % V
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end
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nodes
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TL_A = foundation.thermal_liquid.thermal_liquid; % A
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M = foundation.thermal.thermal; % R
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TL_B = foundation.thermal_liquid.thermal_liquid; % B
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end
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parameters
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pipeHydrDia = {1.5e-2, "m"}; % Pipe hydraulic diameter
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pipeLength = {1, "m"}; % Pipe length
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pipeArea = {1.75e-4, "m^2"}; % Pipe cross-sectional area
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pipeRoughness = {1e-6, "m"}; % Pipe roughness
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iniTemperature = {300, "K"}; % Initial temperature
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htc = {10, "W/(K*m^2)"}; % Heat transfer coefficient
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end
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components(ExternalAccess=observe)
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RoomUnderFloor = RoomUnderFloorPiping(UFPipeHTArea =pi*pipeHydrDia*pipeLength,...
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UFPipeHTC=htc,gateValveOrificeDia=pipeHydrDia,gateValveBypassOrificeDia=pipeHydrDia,...
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maxGateValveOrificeDia=pipeHydrDia,maxGateValveBypassOrificeDia=pipeHydrDia,...
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UFPipeHydrDia=pipeHydrDia,UFBypassPipeHydrDia=pipeHydrDia,UFPipeT=iniTemperature,...
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UFBypassPipeT=iniTemperature,UFPipeArea=pipeArea,UFBypassPipeArea=pipeArea,...
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UFPipeLen=pipeLength,UFBypassPipeLen=pipeLength,UFPipeRoughness=pipeRoughness,...
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UFBypassPipeRoughness=pipeRoughness);
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end
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connections
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connect(RoomUnderFloor.TL_A,TL_A);
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connect(RoomUnderFloor.TL_B,TL_B);
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connect(RoomUnderFloor.M,M);
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end
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equations
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RoomUnderFloor.TL_V == TL_V;
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end
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end

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