Re: [TRNSYS-users] Type 508c cooling coil problems

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

Santeri,
  Without looking at the project, it is not really possible to guess at what might be going on. I would recommend that you contact your distributor's technical support.
Kind regards,
 David

On 8/28/2013 06:40, santeri siren wrote:

Dear TRNSYS users,

 

I need to simulate a dehumifying AHU cooling coil in one of my projects and type 508c seemed to be most suitable for this purpose. However when I tested type 508c the results are really strange and it doesnt seem to work properly at all.

 

Description of my test project:

 

Type 92 auxiliary cooler cools water steream to 8 C --> type 110 single speed pump makes the water flow ---> water flows into type 508c cooling coil that is set to keep air outlet temperature at 16 C.

 

Please see the attached picture. It shows the results in my test simulation (air and water temperatures and flow rates) (air flow and inlet air RH are constant)

 

Results show that type 508c manages to keep the air outlet temperature in its setpoint (16C) only at some point. Other times air outlet temperature behawes strangely. Also, coil water flow and bypass flow dont make sense.

 

Could someone please help me to make this work ?

 

best regards,

Santeri Siren

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David BRADLEY
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Thermal Energy Systems Specialists, LLC
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