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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
E: alastair.mcdowell@energyae.com
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 |