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<p class="MsoNormal">Dear all TRNSYS users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am modeling an AHU system in TRNSYS for heating applications of a residential building. To calculate the air flows between thermal zones, from outside the building such as infiltration and due to ventilation system, I am going to use
TRNFlow. The main components in the ventilation system are: supply and return fans which can be variable or constant speed, heating coil and ducting system. To model these main components in TRNFlow, I need to know the quantity of building heating load to
determine the head and flow rate of the supply fan as well as the capacity of the heating coil.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">How can I estimate the capacities of the supply fan and heating coil? Should I first define infiltration, ventilation and ideal heating regimes in TRNBuild and then estimate the heating loads of the building based on them?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Also, is it possible to connect Type 151 and? Because, I'm going to set up a VAV system in TRNFlow in such a way that the speed of the supply fan component changes according to the amount of heat required in each thermal zone.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The last question I have is, I would like to know how to estimate the air coupling between thermal zones if I want to evaluate air transfers between them using the "coupling" regime. Are there any equations for this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best Regards,<o:p></o:p></p>
<p class="MsoNormal">Ali<o:p></o:p></p>
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