Why the Site Diffuse Solar Radiation Rate per Area is smaller than the Surface Outside Face Incident Sky Diffuse Solar Radiation Rate per Area

asked 2023-09-18 22:05:57 -0500

yongqingzhao's avatar

updated 2023-09-20 09:35:12 -0500

I was modeling a shoebox office with two windows facing the south using EnergyPlus, the windows are two vertical plane. However, when I extract the hourly report, I found the Site Direct Solar Radiation Rate per Area is smaller than the Surface Outside Face Incident Sky Diffuse Solar Radiation Rate per Area at some hours. I didn't understand why this happened really.


Below is the picture of the model: image description

Below is the results: image description

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Comments

1

The title and description state "Site Direct Solar Radiation Rate per Area", yet the graph suggests "Site Diffuse Solar Radiation Rate per Area". Could you clarify, re-edit your post?

Denis Bourgeois's avatar Denis Bourgeois  ( 2023-09-19 05:51:23 -0500 )edit