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May 20, 2016 6:05 AM CST
Name: Thomas
Deep East Texas (Zone 8a)
Bee Lover Vegetable Grower Tomato Heads Region: Texas Plant Lover: Loves 'em all! Greenhouse
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I have attached a new drawing showing the relative position of the Sun for four (4) of the summer months in relationship to the Canopy over the Greenhouse. This will show where the Sun will shine directly onto the Greenhouse at 11:58 AM for the months of May, June, July and August. Beyond August the Sun is rising lower ever month and is beginning to “cool” and will have less effect on over-heating the Greenhouse. Even as Early as September the Canopy could be folded back exposing all of the Greenhouse.


NOTE: these figures are calculated for Deep East Texas and will vary according to your Latitude and Longitude. Also note that the Greenhouse is positioned in a true North and South centerline.

I know this is hard to read due to the scale so I color coded each month and here is the key:
May is Dark Blue and the Sun’s angle is 71.71 degrees from North.
June is Red and the Sun’s angle is 78.34 degrees from North, a bit higher than May.
July is Cyan and the Sun’s angle is 73.86 degrees from North and has started a decline.
August is Green and the Sun’s angle is 65.31 degrees from North and a significant decline from the peak in June.

Due to the off-axis rotation of -23.5 degrees of the earth, the Sun’s rays will have to penetrate more of the Earth’s atmosphere as we head into Fall and thus the “cooling” we will experience.

Only a small frontal portion of the Greenhouse will receive direct sun during this four month period and those months are, May and August.

I am open to any and all suggestions that can improve on this concept and I appreciate the interest and help already received.

By golly Watson, I think this just might work! Sticking tongue out

Click on the photo to enlarge

Thumb of 2016-05-20/Thomas75/03b8c7
Thomas75

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