Dear Oliver, The cooling power also depends
on the room temperature. The quoted 40-60 W/m2 is usually specified at peak
cooling demand, usually at a roomtemperature of 25 or Regards, Arie Van:
trnsys-users-bounces@engr.wisc.edu [mailto:trnsys-users-bounces@engr.wisc.edu] Namens Pol Olivier Dear TRNSYS users, I am modelling a concrete core cooling (activation of
storage mass of slabs) with an active layer (with TRNSYS 16.01). Relevant data are: -
distance to edge of the
slab: 12cm -
pipe spacing: 20cm -
flow mass: 12kg/h.m² -
Temperature of supply air
into the rooms: According to the definition of outputs for a surface,
the energy abstracted from the room into the slab should be QCOMI and QCOMO
(considering both l-wave radiation and convection). My results are: -
inlet temperature -
inlet temperature -
inlet temperature The values I obtain for QCOMI and QCOMO are much
lower than the ones obtained in the practice (usually between 40 and 60W/m²). I tried different variations (simulation time step,
distance to the edge of the slab, flow mass and auto-segmentation, internal
calculation of convective heat transfer coefficient, number of loops) without
success… Are QCOMI and QCOMO the right outputs? Thank you for your suggestions, ____________________________ arsenal research Geschäftsfeld Nachhaltige
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