Re: [TRNSYS-users] Question active layer in type 56

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

Richard,
  The active layer model does handle no-flow. The air temperature may not be the best variable to watch to determine whether the system is operating properly; radiant floor systems often try to keep people comfortable by keeping the zone surfaces either cool or warm and letting the air temperature float through a wider range than is generally acceptable in purely air-based systems. You might look instead at the inside surface temperature of your radiant slab. I would think that you would see a slower response to turning the GSHP on and off there.
Best,
 David


On 5/15/2012 01:48, Richard Thygesen wrote:

Hi.

Have any of you out there had problem with controlling an active layer in type 56?

I have connected  the active layer to a GSHP system but the indoor temperature rise sharply when the controller turns the GSHP off and return to a “normal” 20°C when the GSHP starts again. Is the active layer incapable of handle a no flow situation?

 

Does anyone know what the problem might be?

 

Best regards

Richard Thygesen

Doctoral student

 

Mälardalen University

School of Sustainable Development of Society and Technology

Phone: +46(0)21-10 31 82

richard.thygesen@mdh.se

www.mdh.se

 

 

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