Jean,
thank you for your response. In the mean time the problem is resolved, but I don't know how...
I think de openstudio visualisation was causing the weird results.
Met vriendelijke groeten,
Geert
Van: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Namens Jean marais
Verzonden: 12 February 2013 09:28
Aan: EnergyPlus_Support@xxxxxxxxxxxxxxx
Onderwerp: [EnergyPlus_Support] Re: LowTemperatureRadiantConstantFlow watertemperatures
you could monitor different nodes for temperature and flowrate to track down your problem. remember that a surface at 26 deg C is only so big and can therefore only transfere a certain amount of heat into the space...so boiler size is not the problem. What is your surface temperature, supply water temperature and return water temperatures.
jean
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Geert Bellens" wrote:
>
> I have an office with concrete core cooling and heating, using the LowTemperatureRadiantConstantFlow object.
>
> In summer the temperature of the water must be 17�. In winter this must be between 26� and 17�C depending on the outdoordrybulb temperature.
>
> In winter I can't get my high water temperatures... I only get 23-24 �C and this is even not at the lowest outdoordrybulb...
>
> I've put the watertemperature constantly on 26�C, but even then, the watertemperature is fluctuating around 23.5�C..
>
> I've put the boiler capacity extremely high, but no effect. What is preventing my radiant water inlet temp to have the exact temperature as demanded ?
>
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