jmaravich Posted November 28, 2018 Share Posted November 28, 2018 I am working to recreate a PVsyst model for a site and use the model for weather normalization from the site's meteorological data. The original model was done in version 6.43. I am currently running version 6.75. When I get to the waterfall diagram, there are differences in the results for the Effective Irradiance on Collectors which I have not been able to replicate. I have read through the version changes posted in the PVsyst webpage but I cannot identify a change that would explain what I am seeing. Here are the results in 6.75:Input: 1624 kWh/m^2Global Incident in coll. plane: +25.2%Global incident below threshold: -0.1%Near Shadings: irradiance loss: -3.1%IAM factor on global: -1.3%Soiling loss factor: -1.0%In the version I am trying to replicate from 6.43:Input: 1624 kWh/m^2Global Incident in coll. plane: +29.4%Global incident below threshold: None statedNear Shadings: irradiance loss: -2.7%IAM factor on global: -1.0%Soiling loss factor: -1.0%Any guidance on why these would be different and how to match the original model would be greatly appreciated. Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now