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Re: [TRNSYS-users] Capacitance in TRNBuild
Ole,
To add to what Jean Marais said, by including the wall capacitance in
the zone and making only resistive walls you are turning Type56 into
something resembling a lumped capacitance model and are no longer taking
advantage of there being any difference between the air temperature and
the surface temperatures. If that is the kind of model that you want to
use then there are some actual lumped capacitance building models either
as a single zone model the standard library (Type88) or as a multizone
model in the TESS Loads and Structures library (Types 759 and 660)
best,
David
On 2/22/2015 06:01, Ole Nienaber wrote:
Dear all,
I'm trying to model a building zone in TRNBuild. The store capacity is
specified by 90 Wh/(m²*K). Unfortunately there is no information about
the single store capacities (e.g. walls, furniture,...). Now my idea
was to just model the zone with massless walls and to add the whole
store capacity to the capacity in TRNBuild (normally the wall capacity
is not valued in this parameter). Normally I don't see any problems
regarding to this way of calculation, becauce I only use the absolute
value of the capacity. Do you see any problems in doing this?
Thanks and greets,
Ole
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David BRADLEY
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Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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