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Entry Date
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Nick Name
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Location
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Sunday, May 02, 2010
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J.D.
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Nikiski, Alaska 99635
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Entry 54 of 218 |
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Installed three sets of automatic gas charged cylinders/ window openers yesterday. Two in the pumpkin greenhouse and one in the tomato greenhouse. These operate without any power, as the temperature rises during the day the gas in the cylinders expands, increasing the pressure and pushing the cylinder rod outward. They can push out a window and frame with 15 lbs of pressure. Adjustment screw at the bottom of the cylinder allows you to open or close the device at a lower or higher starting temperature. As the sun goes down or it gets cloudy the pressure in the cylinder decreases retracting the rod, pulling the window closed. Takes the worry out of frying your plants.
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