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How to add a solar in a jar?
Posted: Sun Dec 26, 2010 9:04 pm
by plex
Hi
Is't somehow possible to get MH calculate solar from 2 temp sensors (in a jar)?
I know that virtual sensors is possible, but what conversion do I need, to get W/m2?
Thank you in advance
Re: How to add a solar in a jar?
Posted: Mon Dec 27, 2010 1:51 pm
by skyewright
plex wrote:Is't somehow possible to get MH calculate solar from 2 temp sensors (in a jar)?
I know that virtual sensors is possible, but what conversion do I need, to get W/m2?
If you know the temp difference that represents a 100% clear sky for your 'jar' at the current time of year, it's perfectly possible to get an estimated 'solar percentage'. I do that using a combination of a plug-in (which I'm happy to share) to calculate the temp difference and a virtual sensor to calculate the percentage.
You can define a virtual sensor to calculate a difference, but in this case the plug-in is needed because (unless I'm missing something) you can't then use the "temp difference" virtual sensor as input for a "temp difference as percentage" virtual sensor.
To convert that estimated percentage into a W/m2 equivalent you'd need to know what the full sun W/m2 figure was for the current location and time; if Meteohub calculates and provides that figure then it's a surprise to me (but sometimes I am surprised.
).
Re: How to add a solar in a jar?
Posted: Mon Dec 27, 2010 2:54 pm
by plex
skyewright wrote:plex wrote:Is't somehow possible to get MH calculate solar from 2 temp sensors (in a jar)?
I know that virtual sensors is possible, but what conversion do I need, to get W/m2?
If you know the temp difference that represents a 100% clear sky for your 'jar' at the current time of year, it's perfectly possible to get an estimated 'solar percentage'. I do that using a combination of a plug-in (which I'm happy to share) to calculate the temp difference and a virtual sensor to calculate the percentage.
You can define a virtual sensor to calculate a difference, but in this case the plug-in is needed because (unless I'm missing something) you can't then use the "temp difference" virtual sensor as input for a "temp difference as percentage" virtual sensor.
To convert that estimated percentage into a W/m2 equivalent you'd need to know what the full sun W/m2 figure was for the current location and time; if Meteohub calculates and provides that figure then it's a surprise to me (but sometimes I am surprised.
).
Hrmm sounds very complex to me...
I think MH should integrate solar in a jar function - just like Weather Display