Re: [TRNSYS-users] Variable heating rate

[David BRADLEY <d.bradley@tess-inc.com>]

Damien,
  The easiest way to add or removed energy from a liquid stream is with the equation Tout = Tin + q/mdot/Cp.

  I'd save the Excel data into a text file, read it with a Type9 data reader and pass the result into the equation. Energy addition to the liquid stream would be a positive value of q. Energy removal would be a negative value.
Best,
 David


On 3/30/2012 08:15, Damien Casetta wrote:

Hi, 

I am currently working on a project at Building Services Engineering, Chalmers, Göteborg. Basically, I am carrying Thermal Response Tests with borehole heat exchangers and using TRNSYS to calibrate the DST model. 

My question is by far more basic. With standard components, what is the easiest way to inject a variable heat rate to a circulating fluid? The idea would be to import hourly heating power from Excel. It seems that the auxiliary heater operates with at maximum heating rate only (on/off operation).

Thanks in advance for your help,

Regards,   

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Damien Casetta

Chalmers University of Technology | Energy and Environment | Exchange student

INSA Lyon Génie Energétique et Environnement | Elève ingénieur 

 
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