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[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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