[TRNSYS-users] PV Panels increase roof temperature ?

Tushar Sharma tushar.sharma at hof-university.de
Wed Feb 12 10:44:00 PST 2020


Dear Sam

I think you could utilize the thermal component using Pv-t panels than just normal PV. Or else you can do some detailed cfd analysis for a portion of roof that interacts with PV under different operating conditions just to see which factors contribute to the thermal losses. Not sure if that's possible in trnsys.

Regards

Tushar

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From: TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> on behalf of Sam Elyas via TRNSYS-users <trnsys-users at lists.onebuilding.org>
Sent: Wednesday, February 12, 2020 6:19:30 PM
To: TRNSYS users mailing list at OneBuilding.org <trnsys-users at lists.onebuilding.org>
Cc: Sam Elyas <karaktus at gmail.com>
Subject: [TRNSYS-users] PV Panels increase roof temperature ?

Dear community,

I'm wondering if the roof of the building I'm modelling is 70% covered of PV panels increases roof's temperature,

Let's assume 20% of solar energy is converted to electricity, the remaining 80% is thermal energy stored in the PV panels as heat and transmitted to the roof and the sky, thus increasing roof's temperature compared to a low absorption roof coating (cool roof without
PV panels) ? am I getting this wrong ?

Thank you!
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