I would say “correct” is contextually sensitive. In
my case editing the weather file was fine due to the scope of the investigation.
I’m sure in many other investigations I wouldn’t do it, but should
be evaluated on a project by project basis. It is an easy way to stop it
shutting down due to condensation, and obviously you would not run it like that
in real life.
Danny
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Bing Dong
Sent: Friday, 15 August 2008 3:57 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] LOW TEMP RADIANT SYSTEM shut-off
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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