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Re: [TRNSYS-users] Buildings response to sine of solar radiation

Is this zone experiencing any shading from another part of the building? Once the sun moves to a different angle and is no longer blocked, then the radiation would increase.

 

Fred Betz  PhD., LEED AP
Sustainable Systems Analyst

 

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From: Maarten Sourbron [mailto:Maarten.Sourbron@mech.kuleuven.be]
Sent: Wednesday, December 01, 2010 9:55 AM
To: trnsys-users@cae.wisc.edu
Subject: [TRNSYS-users] Buildings response to sine of solar radiation

 

If I make change the solar radiation into a sine wave falling on a south zone of a building, I get strange peaks in de solar radiation transmitted + absorbed (QTSPAS) for that zone.  Apparently it is function of the minimum of the sine : maximal effect for Qsol_min = 0 and gradually dissappearing if I shift the sine higher (Qsol_min > 0).  See attached pictures.

Does anyone has an idea where this comes from?

 

Thank you,

 

Maarten Sourbron

 

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