Re: [TRNSYS-users] Question regarding Active layer

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

Anand,
  The number of loops is the number of individual pipes that are all fed from a single manifold. Section 5.2.4.2.3 of the 05-MultizoneBuilding manual covers the "how to define" aspect of active layers. The flow that you specify is divided evenly between the pipe loops and that in turn has an effect on the internal heat transfer coefficient between the pipe wall and the liquid in the pipe. Section 5.4.4 of the same manual covers the mathematics that underlie the active layer model. If you haven't found enough detail or don't find the answers you are looking for in those sections, please let your distributor know!
best,
 David

On 09/02/2015 04:26, Anand N wrote:

Hello,

  I am working on TRNSYS 17 and I have a question regarding the TRNBuild. 

What is meant by "Number of loops" in ACTIVE LAYER SPECIFICATIONS tab, if under floor heating system is activated. How do we define it?

Please let me know if anyone has an idea about it and how does it affect the flow rate. Since nothing is mentioned about this in the user -manual, I'm confused about the internal connections in the flooring.

Thanks in advance,

Regards,       

Anand Narasipuram,

MSC- ENTECH, KIC InnoEnergy,

Karlsruhe institute of technology

Karlsruhe, Germany.

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