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[EnergyPlus_Support] Re: LowTemperatureRadiantConstantFlow watertemperatures
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: [EnergyPlus_Support] Re: LowTemperatureRadiantConstantFlow watertemperatures
- From: "Jean marais" <jeannieboef@xxxxxxxxx>
- Date: Tue, 12 Feb 2013 08:27:35 -0000
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- Delivery-date: Tue, 12 Feb 2013 01:27:43 -0700
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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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