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Re: [TRNSYS-users] Strange behaviour type 50b



Benjamin,
  If Alastair's suggestion didn't do the trick then I'd guess that it isn't possible to know what the error might be without looking at the project. Please send the Studio project file(s) to your distributor's tech support hotline.
regards,
 David


On 11/12/2015 10:54, Benjamin Stobbe wrote:

Dear Alastair,

 

Thank u for answering. For sure I took the area in the calculations so I was comparing the output of the solar panel with the solar irradiance times the area of the solar panel. This is why I cannot figure out the results.

 

Best regards,

 

Benjamin Stobbe

 

Van: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] Namens Alastair McDowell
Verzonden: dinsdag 10 november 2015 23:12
Aan: 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users@lists.onebuilding.org>
Onderwerp: Re: [TRNSYS-users] Strange behaviour type 50b

 

Hi Benjamin,

 

Solar irradiance has the units of [kJ/hr.m^2], i.e. energy rate per unit square meter. It is quite likely that the magnitude of thermal energy yield (kJ) will exceed the integrated solar irradiance (kJ/m^2), if the surface area of your solar panels is greater than 2-3 m^2, depending on the thermal efficiency of the panels. Make sure you have taken the units and area into account in your calculations.

 

Kind regards,

 

Alastair McDowell

Engineering Consultant

Energy Analysis & Engineering – Enabling innovation for a sustainable future

T: +61 450 600 842

608 Harris St Sydney NSW 2007 Australia | http://www.energyae.com

 


From: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> on behalf of Benjamin Stobbe <benjamin_stobbe@hotmail.com>
Sent: Tuesday, 10 November 2015 6:24 PM
To: 'TRNSYS users mailing list at OneBuilding.org'
Subject: [TRNSYS-users] Strange behaviour type 50b

 

Dear all,

 

During my project with the hybrid solar panel type 50b I found out some strange behaviour during the total yield measurements. The solar panels produce more thermal energy than irradiance they receive, can someone explain me how this is possible and if maybe make a mistake somewhere.

 

Best regards,

 

Benjamin Stobbe



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