Dear TRNSYS users,I've got a problem with TESS-Type 335: Manual says, that conditioning modes are selected by comparing T_SA,set and T_mixed (see manual 5.7.1 and 5.7.2). In my modell (see attachement) the comparison seemes to refer on T_SA,set and T_OA (instead of T_mixed), so that cooling mode is off when T_OA < T_SA,set. As a result T_SA,set is set as T_mixed (no cooling) instead of defined T_SUPP from equation (in may modell).
Heating and Cooling Power (Q_ht,HC and Q_cl,CC) refer to T_SUPP like described in manual, but air temperature from AHU to room (relevant output value) is wrong I would say.
If conditioning mode ist changed from 2 (cooling) to 3 (heating + cooling), this problem doesn't appear any longer.
Kind regards, Markus Gratzl -- ingenieurbüro gratzl e.u. markus gratzl-michlmair dipl.-ing. dr. techn. ingenieurbüro (beratende ingenieure) für bauphysik reischau 5 | a-4715 taufkirchen a.d. tr. tel +43 7733 50281 | mobil +43 664 5131642 markus.gratzl@gratzl.co.at | http://energie.gratzl.co.at/ uid-nr atu 66951845 | FN 380717 d
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AHU.zip
Description: Zip archive