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Is there a way to extract thermal mass from an energyplus model?

I am comparing different building designs and would like to understand the role of thermal mass for their energy performance better. Is there a way to extract the total available thermal mass in a building model or in a zone, e.g. in J/m2K?

Is there a way to extract thermal mass from an energyplus model?

I am comparing different building designs and would like to understand the role of thermal mass for their energy performance better. Is there a way to extract the total available thermal mass in a building model or in a zone, e.g. in J/m2K?


Update

After receiving two fantastic answers, I realised that I should have phrased my question a bit more specifically. Technically, heat capacity will not only depend on a material's thickness, density, and heat capacity, but also on dynamic effects, such as amplitude, etc. One rule of thumb is that only the first few centimetres in a surface have relevant thermal inertia. So I was wondering if any kind of measure could be extracted form e+.

Not sure if this update warrants for a new question...