[bldg-sim] Hygrothermal analysis capability

[Yates, Christopher]

Good afternoon one and all,

1. Does anybody know of an IES apache type piece of dynamic simulation
software that can model the hygroscopic effects of building materials? The
job in question is an above ground, thermally massive nuclear waste facility
with very low levels of ventilation. 

   The concrete structure is expected to give off moisture for many years as
part of its cure. I expect that it will also react to internal and external
vapour pressure and act in a hygroscopic manner. Can this be modelled with
ESP-r for example?

   Another interesting feature could be the inclusion of unfired clay for
hygroscopic buffering.

   The results of the thermal analysis feed into the concrete design and are
critical because the concept design of store contains no expansion joints to
avoid radiation "shine paths".

2. In order to model the thermal mass of waste within the store it was
necessary to represent it as "internal partitions". Does esp-r (or any
similar) have the capability to "fudge in" extra thermal mass into a room
space along with any other parameters such as surface area, thermal
transmittance, surface resistance, etc.

Best regards

Chris Yates


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