Hello,
I am attempting to do an analysis of hydronically charged PCM and
have two questions.
The first is in the set up of my base radiant system. I have seen
some posts in regard to the issue of ConductionTransferFuctions vs.
ConductiveFiniteDifference algorithms but am hoping someone will be
able to help clarify the issue with v7 and the application of radiant
systems. I seem to have my base radiant system up and running fairly
well but once I switch to a CFD algorithm in prep for adding PCM I am
getting drastically different result compared to the CTF, primarily
during summer cooling. I am having difficulty determining if this is
a user error and needs further adjustment or if I am working against
the program.
My second question is in regard to the PCM. Again my study is trying
to charge PCM in the walls and roof (Phoenix Cooling) to shift loads.
My research is leading me to believe that E+ is not yet able to
tackle
this issue, "Modeling a radiant floor system with Phase Change
Material (PCM) integrated
into a building simulation tool: Analysis of a case study of a floor
heating
system coupled to a heat pump" which is dated fairly recent but again
I am hoping someone has insight to confirm that this is not yet
directly achievable in E+ or maybe direct me to a work around. I
have
found research suggesting TRANSYS aided in a PCM cooling panel study
but after investing time into learning E+, switching programs won't
be
feasible for my timeline to switch.
I appreciate your time and suggestions,
Jason
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