Not sure why it's so much higher than the theoretical value?
https://postimg.cc/yDb1XgbG
During clear days back in the summer, it would be lower than the theoretical value.
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Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080
Solar Rad - Winter
Moderator: mcrossley
- mcrossley
- Posts: 14388
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar Rad - Winter
Do you have a different solar factor set for December?
- mcrossley
- Posts: 14388
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar Rad - Winter
I have mine set to generate higher theoretical values in winter as the atmosphere is normally clearer than in summer. That is why I introduced the ability to scale across the seasons.
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Mapantz
- Posts: 1992
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- Operating System: Windows 11 x64
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Re: Solar Rad - Winter
I've set it to 0.90 and it's bang on now.
Was it added recently? Don't remember seeing that issue before.
Was it added recently? Don't remember seeing that issue before.
- mcrossley
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- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar Rad - Winter
A year ago, in v3.14.1
If you leave them both the same, then the behaviour is exactly as it was before the change.
If you leave them both the same, then the behaviour is exactly as it was before the change.
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AndyKF650
- Posts: 818
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- Contact:
Re: Solar Rad - Winter
Well there is a thing, I changed my winter transmission factor to 0.9 and now when the sun shines the theoretical max equals the actual. I just need the sun to shine a bit more to make our house solar cells work.
The winter solstice will soon be here and things should get brighter again.
The winter solstice will soon be here and things should get brighter again.