IDA Indoor Climate and Energy On the effects of decoupling air flow and heat balance in building simulation models Per Sahlin EQUA Simulation AB Stockholm, Sweden www.equa.se IDA Simulation Environment IDA Indoor Climate and Energy IDA Room IDA Road Tunnel Ventilation
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IDA Indoor Climate and Energy On the effects of decoupling air flow and heat balance in building simulation models Per Sahlin EQUA Simulation AB Stockholm,
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IDA Indoor Climate and Energy
On the effects of decoupling air flow and heat balance in building simulation models
Per SahlinEQUA Simulation ABStockholm, Swedenwww.equa.se
IDA Simulation Environment
IDA Indoor Climate and Energy
IDA Room
IDA Road Tunnel Ventilation
Problem and Outline
• Why air-flow coupled thermal simulation by symbolic equations and general-purpose, variable-timestep DAE solvers?
• A decent GUI will be used
• Coupled models may be mathematically sticky:non-linearities + stiffness = short steps