PVsyst's forum

Welcome on PVsyst's forum.
It is currently Mon Sep 21, 2020 2:45 pm

All times are UTC+02:00

Post new topic  Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Wed Dec 31, 2014 12:47 pm 

Joined: Sun Jun 15, 2014 6:12 pm
Posts: 4
Location: Israel
Dear PVsyst experts,
im already using Pvsyst for long time , and i had been in your great trainging a year ago which was very informative for me.
In Israel we can see clearly the advantage of thin film modules technology (8-10% more), and i think that the reason is the high temprature on the israeli deserts (summer average above 35 deg)
now i design a PV plant in UK (centre) and i found that there is no difference at system's annual yield between the two technologies (less then 3% or no difference at all)
i tried to do many simulations at different tilt and different shading angle but nothing...
is that reasonable or i did something wrong here?

thanks a lot!

PostPosted: Sat Jan 10, 2015 10:54 pm 
User avatar

Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1680
Indeed, I don't know any systematic and significant differences of PR between different technologies in "usual" climates.
Sometimes it may be more, sometimes less. Only the simulation can give an answer in a given climate, and you have an estimation of the respective irradiance and temperature losses.

Moreover, the comparison results are not necessarily reliable as the module's performance parameters may be defined in different ways (Manufacturer-defined or default parameters for Rserie and Rshunt, etc).
We don't have a detailed measurement report for each module (especially for low-light performance, i.e. Rserie determination).

As you point out, it is possible to have less thermal losses with thin film technologies with lower muPmpp coefficients in very hot climates, but 8 to 10% seem a very high discrepancy.

Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 2 posts ] 

All times are UTC+02:00

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited