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[EnergyPlus_Support] Re: Simulation of adaptive facades





Hi Sebastian,

It should be possible to control this kind of material properties during simulation run-time using the EnergyManagementSystem:ConstructionIndexVariable object in EMS.
You can refer to the following publication, or contact Fabio, for more information about a recent application of this modeling approach: 
Fabio Favoino, Mauro Overend, Qian Jin, The optimal thermo-optical properties and energy saving potential of adaptive glazing technologies, Applied Energy, Volume 156, 15 October 2015, Pages 1-15, http://dx.doi.org/10.1016/j.apenergy.2015.05.065.

You raise an important point with respect to the correct treatment of thermal history effects in the simulation process of facades with dynamic thermophysical properties.
In a recent article, we have demonstrated that such effects can play a dominant role, especially when it comes to adaptability  of heavyweight constructions (for dynamic fenestration systems, though, this effect may be negligible):  Loonen, R.C.G.M., Hoes, P. & Hensen, J.L.M. (2014). Performance prediction of buildings with responsive building elements: challenges and solutions. In Proceedings of the 2014 Building Simulation and Optimization Conference (BSO14): http://repository.tue.nl/776507

As far as I am aware, it is not possible to overwrite initial state values in EnergyPlus. Although it is rather complex, the use of an initialization horizon can be a solution. See also: Coffey, B. (2013). Approximating model predictive control with existing building simulation tools and offline optimization. Journal of Building Performance Simulation, 6(3), 220-235.

Best regards,
Roel Loonen

Eindhoven University of Technology

 



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Posted by: Roel Loonen <roelloonen@xxxxxxxxx>


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