[EnergyPlus_Support] Re: Direct Air Heating help

["Ece Mumcu" <mumcuece@xxxxxxxxx>]

Sorry I caugt some mistake first,I want to heat the air to maintain the inside temperature 18 but not with the help of recirculation air. If I knew to model an outdoor air system without mixing box, I would model like that. That ' why I am trying to exaust return air out without any mixing with outdoor air.

On the other , my aim is to compare heating load demand in a single zone with this system and with the same system again plus a TSC .

So I am intersted in heating loads .
thanks

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Ece Mumcu" <mumcuece@...> wrote:
>
> 
> Dear people,
> 
> I formed an airloop which has just one branch containing 3 component objects.
> 1.AirloopHvac:Outdoor Air system (outdoor air mixer)
> 2. Coil: Heating: Gas
> 3. Fan: Constantvolume
> 
> and for the air terminal unit I used singleduct:uncontrolled. So It is a direct air heating system.
> 
> For the min and max outdoor airflow rate I assigned 3 m3/sn to bypass recirculation   in the mixing box. I want to supply 3 m3/sn outdoor fresh  air ( in the ambient temperature) to the zone during the occupied hours and keep the zone temperature 18 C occupied hours. By having 3 for min and max outdoor air flow rate 3m3/sn and design supply air flow rate 3 m3/sn , I assume I exhaust the recirculation air do I ???
> 
> On the other hand, is this system ok in terms of HVAC system??
> 
> The outputs which I observe are direct air sensible heating energy
> Air loop total heating energy
> Zone sensible heating energy
> Air loop total coil heating energy
> Air loop fan heating energy
> 
> From the I / O REFERENCE, DÝRECT air sensible heating energy is " the heating energy provided to the zone by the uncontrolled gterminal unit 
> But the zone/system sensible heating energy description is quite similar. However, I noticed one thing although my heating system 
> does not work during july and august , there are small loads for these two months in direct air heating energy and zone system sensible energy outputs. How could it be ? and if I wanted to put a TSC ( which I want )and compare the both case which output is important for cooling reason .. or comparing the two situation is logical to find out how TSC affects the heating energy ?
> 
> 
> The aim is to provide this 3 m3/sn during the occupied hours ,heat it to maintain the zone described conditions except july and August. 
> 
> 
> I hope I will have great help 
> Thanks !!
>




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