Started by glenn kangiser, January 30, 2005, 10:24:03 PM
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Quote from: glenn kangiser on January 18, 2009, 12:05:31 PM #1: Morning sun came and went. #2: I had my movement but it stopped too quickly. #3: Problems with my design:
Quote from: glenn kangiser on January 22, 2009, 06:57:03 PMIn the morning the tracker is facing the west from the evening before. The arm will keep the trough focused immediately in the morning and continue to keep it focused for a longer period of time as the tracker rotates into place, so as the tracker rotates toward the east in the morning and the sun moves toward the west, it stays focused on the trough pipe. As the sun continues west across the sky (or earth rotates east if you prefer), it will exceed the focus of the trough but by then the tracker is already rotated and the main tubes take over keeping the tracker focused for the rest of the day. How much time in focus is variable by the location of the mounts of the arm. The inside one (screw in the end of the arm near the hydraulic cylinder) will cause more rotation as it is moved away from the tracker pivot point or less movement as it is moved closer to the hinge point.I am still finding a few issues with morning focus and it looks like afternoon, the west main tube may be a bit short on refrigerant (propane), causing it to be a little short on afternoon rotation. As the propane amounts are increased then so are system pressures to be dealt with by the other side. Seems to be a bit of a balancing act but it is working.There seems to be no problem with excess focus time - the propane continues to turn from liquid to gas increasing pressure until it is turned to gas clear to the bottom of the trough. Of course as it goes out of focus then it condenses back to liquid and is ready to do it over again. Somewhere in the middle the two sides balance out near centered on the sun for the rest of the day.So seems I have found more variables to experiment with but I hope to nail it all down and report it here. It is working -- I'm fine tuning yet though. A week of stormy overcast weather and rain have slowed experimentation for now.
Quote from: glenn kangiser on January 23, 2009, 04:55:08 PMJust got back from picking up 8 Trojan L16 batteries. They were listed on Freecycle by a friend. I seldom look at it but I did today and she had just listed them. They are sulfated a bit but i'm also working on a dealership for battery desulfators with MikeyB, so maybe I can rejuvenate them. If not they will at least cover costs for scrap price. Her husband said they were a bit over 3 years old.