Re: [EnergyPlus_Support] LOW TEMP RADIANT SYSTEM shut-off

["Bing Dong" <bingcat2007@xxxxxxxxx>]

The purchased air is an independent way  to cool/heat the space. It
should not be used with other explicitly defined systems such as
radiant system. I do not agree to edit the weather file is a correct
way to do it. Actually, the weather file tell you that you cannot let
your radiant system on all the time. This will generate problems such
as condensation.

Bing

On 8/13/08, Florian Stift <florian.stift@xxxxxxxxx> wrote:
> Dear E+Users,
>
> I am simulating a single zone which is cooled by a "LOW TEMP RADIANT
> SYSTEM"!
> I wanted the system to be continuously "ON", so I defined a very low
> zone cooling setpoint, like 2degC.
>
> When I was realising that the system shuts off when condensation
> occurs on the inside of the ceiling surface, I added a Purchased Air
> System to serve the zone with a limited amount of conditioned air,
> e.g. 0,5ACH with 22deg.C.
>
> There is no condensation any more but the LOW TEMP RADIANT SYSTEM
> shuts off when the zone air temperature falls below that 22degC from
> the Purchased Air Schedule, but I still have defined that schedule for
> a Setpoint of 2degC.
>
> How can I manage to tell the LOW TEMP RADIANT SYSTEM to be ON all the
> time??
>
> Thanks in advance for any help!
>
> Best Wishes,
> Florian
>
>

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