posted by Larry Nash at 2:03 PM
Technical discussion of solar greenhouse design, operation and performance for a coastal location in the Pacific Northwest. Emphasis is on (1) Control Systems and (2) vegetable culture using hydroponics. HomePage: http://solargreenhouse.blogspot.com
1 Comments:
April 5, 2006 Graph Comments and Information:
The heaters are set to 60 deg F with a hysteresis of +/- 1 F deg (The heaters turn "on" at 61 deg F and turn "off" at 59 deg F).
The vent fans are set to 80 deg F, with a hysteresis of +/- 1 F deg.
Note that the "steps" in the nutrient solution temperature coincide with the nutrient solution pump cycles.
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